Audit Information |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Audit Information [Abstract] | |
| Auditor Name | KPMG LLP |
| Auditor Location | Boston, Massachusetts |
| Auditor Firm ID | 185 |
Consolidated Balance Sheets (Parenthetical) - $ / shares |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Common stock, issued shares (in shares) | 35,709,120 | 37,477,707 |
Consolidated Statements of Comprehensive Income - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Statement of Comprehensive Income [Abstract] | |||
| Net income | $ 106.6 | $ 86.8 | $ 67.1 |
| Other comprehensive income: | |||
| Amortization related to derivative securities, net of tax | 7.1 | 2.7 | 2.5 |
| Foreign currency translation adjustment, net of tax | 0.7 | (0.4) | 1.4 |
| Other comprehensive income (loss) | 7.8 | 2.3 | 3.9 |
| Total comprehensive income | 114.4 | 89.1 | 71.0 |
| Comprehensive income attributable to redeemable non-controlling interests in consolidated Funds | 26.6 | 1.8 | 1.3 |
| Total comprehensive income attributable to controlling interests | $ 87.8 | $ 87.3 | $ 69.7 |
Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Statement of Stockholders' Equity [Abstract] | |||
| Dividends to shareholders (in dollars per share) | $ 0.04 | $ 0.04 | $ 0.04 |
Organization and Description of the Business |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Organization and Description of the Business | Organization and Description of the Business Acadian Asset Management Inc. (“Acadian”, “AAMI” or the “Company”), is a holding company that operates a systematic investment management business through its majority owned subsidiary, Acadian Asset Management LLC (“Acadian LLC”). Acadian LLC offers institutional investors across the globe access to a diversified array of systematic investment strategies designed to meet a range of risk and return objectives. Acadian LLC is a leading systematic investment manager of active equity products. Notable product lines and capabilities include Emerging Equity, Non-U.S. Equity, Global Equity, Small Cap Equity, Enhanced Equity, Equity Extensions, Systematic Credit, and Alternatives. Acadian LLC comprises the Company’s Quant & Solutions reportable segment: •Quant & Solutions—incorporates strategies that utilize advanced technology to collect and analyze data, aiming to identify mispriced assets and generate attractive risk-adjusted returns for investors; portfolios include Emerging Equity, Non-U.S. Equity, Global Equity, Small Cap Equity, Enhanced Equity, Equity Extensions, and Systematic Credit. Acadian LLC is organized as a limited liability company. Fees for services are largely asset-based and, as a result, revenues fluctuate based on the performance of financial markets and investors’ asset flows in and out of Acadian LLC’s products. The Company utilizes a profit-sharing model in structuring its compensation and ownership arrangements with Acadian LLC. Variable compensation is based on the firm’s profitability. The Company and Acadian LLC key employees share in profits after variable compensation according to their respective ownership interests. The profit-sharing model results in the alignment of the Company and Acadian LLC key employee economic interests, which is critical to the Company’s talent management strategy and long-term growth of the business. Prior to 2014, the Company was a wholly-owned subsidiary of Old Mutual plc (“OM plc”), an international long-term savings, protection, and investment group, listed on the London Stock Exchange. On October 15, 2014, the Company completed the initial public offering (the “Offering”) by OM plc pursuant to the Securities Act of 1933, as amended. As part of the Offering, the Company was authorized to issue up to 230 million shares of $0.001 par value per share common stock. As of December 31, 2025, Paulson & Co. Inc. (“Paulson”) and related parties thereof held approximately 21.8% of the common stock of the Company. In February 2025, the Company’s Board of Directors authorized an $80 million share repurchase program. For the year ended December 31, 2025, the Company repurchased 1,799,423 shares of common stock at an average price of $26.64 per share, or approximately $48.0 million in total, including commissions. In connection with these repurchases, a reduction to additional paid-in capital in the amount of $1.7 million was recorded until it was depleted, with the remaining $46.3 million of share repurchases recorded to retained earnings. For the year ended December 31, 2024, the Company repurchased 4,445,534 shares of common stock at an average price of $21.32 per share, or approximately $94.9 million in total, including commissions. In connection with these repurchases, a reduction to additional paid-in capital in the amount of $0.4 million was recorded until it was depleted, with the remaining $94.5 million of share repurchases recorded to retained earnings. For the year ended December 31, 2023, the Company repurchased 268,800 shares of common stock at an average price of $19.03 per share, or approximately $5.1 million in total, including commissions. In connection with these repurchases, a reduction to additional paid-in capital in the amount of $(0.3) million was recorded until it was depleted, with the remaining $4.8 million of repurchases recorded to retained earnings. All shares of common stock repurchased by the Company were retired.
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Basis of Presentation and Significant Accounting Policies |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Accounting Policies [Abstract] | |
| Basis of Presentation and Significant Accounting Policies | Basis of Presentation and Significant Accounting Policies The Company’s significant accounting policies are as follows: Basis of presentation These Consolidated Financial Statements reflect the historical balance sheets, statements of operations, statements of comprehensive income, statements of changes in stockholders’ equity and statements of cash flows of the Company. Within these Consolidated Financial Statements, Paulson and its related entities, as defined above, are considered “related parties.” The Consolidated Financial Statements are prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). All dollar amounts, except per-share data in the text and tables herein, are stated in millions of United States Dollars (“USD”) unless otherwise indicated. Transactions between the Company and its related parties are included in the Consolidated Financial Statements. Revenue recognition Revenue from contracts with customers The Company recognizes revenue in accordance with Accounting Standards Codification Topic 606 (“ASC 606”), Revenue from Contracts with Customers. Revenue is recognized in a manner that depicts the Company’s transfer of promised services to its customers in an amount that reflects the consideration the Company expects to receive in exchange for those services net of certain rebates. The application of ASC 606 requires an entity to identify its contract(s) with a customer, identify the performance obligations in the contract(s), determine the transaction price, allocate the transaction price to the performance obligations in the contract(s), and recognize revenue when (or as) the entity satisfies a performance obligation. A performance obligation, the unit of account under ASC 606, is a promise in a contract to transfer a distinct good or service to a customer. The majority of the Company’s contracts contain a single performance obligation, the delivery of investment management services. The promise to transfer these services is not separately identifiable from any other promises in the contracts and, therefore, not distinct. In these contracts, the Company earns a management fee for providing its services. These fees are the consideration to which the Company expects to be entitled in exchange for transferring the promised services to the customer. The Company recognizes revenue for its investment management services ratably over time on a monthly basis, because the customer simultaneously receives and consumes the benefits of the services as they are performed. The Company’s management fee revenue is calculated based upon levels of assets under management (“AUM”) multiplied by a fee rate. Management fee revenue is typically calculated on a monthly or quarterly basis. In certain of the Company’s contracts, the transaction price is variable, because AUM is based on an average over a specified period. In determining the transaction price, variable consideration is included only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized would not occur when the uncertainty associated with the variable consideration is resolved. The Company’s variability around these fees is typically resolved by the end of each period when the actual average AUM for that contract period is calculated. Certain of the Company’s contracts include performance-based fees in addition to or in lieu of management fees. Performance fees are generally assessed as a percentage of the investment performance realized on a client’s account. Performance fees are recognized when they (i) become billable to customers (based on contractual terms of agreements) and (ii) are not subject to contingent repayment. The Company is required to capitalize certain costs directly related to the acquisition of a customer or the fulfillment of a contract with a customer. The Company has noted no instances where sales-based compensation or similar costs met the definition of an incremental cost to acquire a contract with a customer. There are no instances where the Company has incurred costs to fulfill a contract with a customer, therefore no assets related to contract acquisition or fulfillment have been recognized. For each revenue contract, the Company assesses each performance obligation and determines if it is the principal in the transaction (where the nature of its promise is to provide a specified good or service itself) or an agent in the transaction (where the nature of its promise is to arrange for a good or service to be provided by another party). In instances where a customer reimburses the Company for a cost paid on the customer’s behalf, if the Company is acting as a principal, the reimbursement is recorded on a gross basis and if the Company is acting as an agent, the reimbursement is recorded on a net basis. Revenue from other sources Revenue from other sources includes interest income on cash and cash equivalents. Compensation arrangements The Company operates a short term variable compensation arrangement where generally, a percentage of Acadian LLC’s annual pre-variable compensation earnings, as defined in the arrangement, is allocated to a “pool” of Acadian LLC’s key employees, and subsequently distributed to individuals subject to recommendation and approval of a remuneration committee comprised of both the Company’s and Acadian LLC’s management. Additionally, a contractual percentage of Acadian LLC performance fee revenues and post-bonus profits are included in a deferred compensation pool. The deferred compensation pool is allocated to Acadian LLC key employees and is subject to a three-year vesting period. Variable compensation expense is accrued and recognized in the Consolidated Statements of Operations as services are provided by individual employees. Variable compensation also includes discretionary annual bonuses, which may be paid in the form of cash or awards of AAMI equity. The Company operates a longer-term profit-interest plan whereby certain Acadian LLC key employees are granted (or have a right to purchase) awards representing a profits interest in Acadian LLC, as distinct from an equity interest due to the lack of pari passu voting rights. Under this plan, the Company may award a portion of the aforementioned variable compensation arrangement through issuance of a profits interest in Acadian LLC. The awards generally have a three-year vesting period from the grant date, and the service period begins at the commencement of the financial period to which the variable compensation relates. Under this plan, Acadian LLC key employees are eligible to share in the profits of Acadian LLC based on their respective percentage interest held. In addition, under certain circumstances, Acadian LLC key employees are eligible to receive repurchase payments upon exiting the plan based on a multiple of the last twelve months’ profits of Acadian LLC, as defined in the arrangement. Profits allocated and movements in the potential repurchase value, determined based on a fixed multiple times trailing twelve-month profits, as defined, are recognized as compensation expense. Profit interests’ compensation liabilities are re-measured at each reporting date at the twelve-month earnings multiple, with movements treated as compensation expense in the Company’s Consolidated Statements of Operations. Share-based compensation plans The Company recognizes the cost of all share-based payments to directors, senior management, and employees, including grants of restricted stock and stock options, as compensation expense in the Consolidated Statements of Operations over the respective vesting periods. Awards made under the Company’s equity plans are accounted for as equity-settled, and the grant date fair value is recognized as compensation expense over the requisite service period, with a corresponding contribution to additional paid-in capital. Valuation of restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) is determined based on the Company’s closing share price as quoted on the New York Stock Exchange on the measurement date. For awards with a performance vesting condition, compensation expense is adjusted each period to reflect the probability of achievement of the performance condition throughout the vesting period. For market condition awards and stock options, a Monte-Carlo simulation model is used to determine the fair value. Key inputs for the model include assumed reinvestment of dividends, risk-free interest rate, expected volatility, and term. All excess tax benefits and deficiencies on share-based payment awards are recognized as income tax expense or benefit in the Consolidated Statements of Operations. In addition, the tax effects of exercised or vested awards are treated as discrete items in the reporting period in which they occur, and excess tax benefits or deficiencies are classified with other income tax cash flows as an operating activity in the Consolidated Statements of Cash Flows. The Company recognizes forfeitures as they occur. The Company has compensation arrangements with Acadian LLC whereby in exchange for continued service, Acadian LLC equity is either purchased by or granted to Acadian LLC key employees and may be repurchased by the Company at a future date, subject to service requirements having been met. Awards of equity made to Acadian LLC key employees are accounted for as cash settled, with the fair value recognized as compensation expense over the requisite service period, with a corresponding liability carried within other compensation liabilities on the Consolidated Balance Sheets until the award is settled. The fair value of the liability is determined with the assistance of third-party valuation specialists using a discounted cash flow analysis which incorporates assumptions for the forecasted earnings information, growth rates, market risk adjustments, discount rates, when award holders maximize value and post-vesting restrictions. The liability is revalued at each reporting period, with any movements recorded within compensation expense. Principles of Consolidation The Consolidated Financial Statements include the operations of the Company, its subsidiaries, and any consolidated Funds. Intercompany balances and transactions among the Company, Acadian LLC, and consolidated Funds are eliminated in consolidation. The Company evaluates entities it is involved with to determine whether it has a controlling financial interest in them and is required to consolidate. Generally, majority-owned entities or otherwise controlled investments in which the Company holds a controlling financial interest as the principal shareholder, managing member, or general partner are consolidated. This assessment is performed at the time the Company becomes involved with an entity and is reassessed at each reporting date or upon the occurrence of certain events (such as contributions and redemptions, either by the Company, Acadian LLC, or third parties, or amendments to the governing documents of the Company’s investees or sponsored Funds). If the Company subsequently determines that it no longer holds a controlling financial interest, the Company will deconsolidate the entity. Consolidation of Voting Interest Entities The Company has a controlling financial interest in a voting interest entity (“VOE”) when it owns a majority of the voting interests through which it can exert control over significant operating, financial, and investing decisions of the entity and no noncontrolling interest holder has stated rights that would overcome the presumption of consolidation by the majority voting interest. Consolidation of Variable Interest Entities The Company has a controlling financial interest in a variable interest entity (“VIE”) when it is the primary beneficiary of that entity. The primary beneficiary of a VIE is the entity that has (a) the power to direct the activities of a VIE that most significantly affect the entity’s economic performance, and (b) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE. An entity is considered a VIE when (i) it lacks the total equity investment at risk sufficient to enable the entity to finance its activities independently, (ii) the equity holders at risk lack the obligation to absorb losses, the right to receive residual returns, or the right to direct the activities of the entity that most significantly impact the entity’s economic performance, or (iii) the entity is structured with disproportionate voting rights, and substantially all of the activities are conducted on behalf of an investor with disproportionately few voting rights. In evaluating whether the Company is the primary beneficiary of an entity, the Company evaluates its economic interests in the entity held either directly by the Company or indirectly through related parties on a proportional basis. Management fees earned from VIEs are not generally considered variable interests if they are deemed to be at market and commensurate with service. If no single party satisfies the primary beneficiary criteria, but the Company and its related parties satisfy the criteria on a combined basis, then the primary beneficiary is the entity out of the related party group that is most closely associated to the VIE. Assessing whether an entity is a VIE involves judgment and analysis. Factors considered in this assessment include the entity’s legal organization, the entity’s capital structure and equity ownership and any related party or de-facto agent implications of the Company’s involvement with the entity. In the normal course of business, Acadian LLC sponsors and manages certain investment vehicles (the “Funds”). The Funds are generally considered VIEs. In most cases, the Company, through Acadian LLC, has the power to direct the activities of the Funds that most significantly affect the Funds’ economic performance. For certain Funds, the Company provides seed capital to establish the Fund. For seeded Funds, the Company assesses whether or not it is the primary beneficiary of the Fund and is therefore required to consolidate the Fund. The consolidation analysis can generally be performed qualitatively, however, if it is not readily apparent that the Company is not the primary beneficiary, a quantitative analysis may also be performed. The Company generally is not the primary beneficiary of Fund VIEs created to manage assets for clients unless the Company’s ownership interest in the fund, including interests of related parties on a proportional basis, is significant. VIEs are subject to specific disclosure requirements. See Note 5 for additional disclosures pertaining to the Company’s involvement with VIEs. Investments and Investment Transactions Valuation of investments held at fair value Valuation of Fund investments is evaluated pursuant to the fair value methodology discussed below. Other investments are categorized as trading and recorded at estimated fair value. Realized and unrealized gains and losses arising from changes in fair value of investments are reported within net consolidated funds’ investment gains and losses in the Consolidated Statements of Operations. See Note 4 for a summary of the inputs utilized to determine the fair value of other investments held at fair value. Security transactions The Company generally records securities transactions on a trade-date basis. Realized gains and losses on securities transactions are generally determined on the average-cost method (net of foreign capital gain taxes) and for certain transactions determined based on the specific identification method. Income and expense recognition The Company records interest income on an accrual basis and includes amortization of premiums and accretion of discounts. Dividend income is recorded on the ex-dividend date, net of applicable withholding taxes. Expenses are recorded on an accrual basis. Short sales Certain Funds may sell a security they do not own in anticipation of a decline in the fair value of that security. When a Fund sells a security short, it must borrow the security sold short and deliver it to the broker-dealer through which it made the short sale. The short sales are secured by the long portfolio and available cash. The dollar value of which is at least equal to the market value of the security at the time of the short sale. The Fund records a gain, limited to the price at which the Fund sold the security short, or a loss, unlimited in size, upon the termination of a short sale. The amount of the gain or loss will be equal to the proceeds received in entering into the short sale less the cost of buying back the short security to close the short position. While the transaction is open, the Fund will incur an expense for any accrued dividends or interest which is paid to the lender of the securities. These short sales may involve a level of risk in excess of the liability recognized in the accompanying Consolidated Balance Sheets. The extent of such risk cannot be quantified. Funds’ Derivatives Certain Funds may use derivative instruments. The Funds’ derivative instruments may include (but are not limited to) foreign currency exchange contracts, credit default swaps, equity swaps, interest rate swaps, financial futures contracts, and warrants. The fair values of derivative instruments are recorded as other assets of consolidated Funds or other liabilities of consolidated Funds on the Company’s Consolidated Balance Sheets. Certain of the Funds have historically used foreign exchange forwards to hedge the risk of movement in exchange rates on financial assets on a limited basis. The Company’s Funds have not designated any financial instruments for hedge accounting, as defined in the accounting literature, during the periods presented. The gains or losses on a Fund’s derivative instruments not designated for hedge accounting are included as net consolidated Funds gains or losses in the Company’s Consolidated Statements of Operations. Foreign currency translation and transactions Assets and liabilities of non-U.S. consolidated entities for which the local currency is the functional currency are translated at current exchange rates as of the end of the accounting period. The related revenues and expenses are translated at average exchange rates in effect during the period. Net exchange gains and losses resulting from translation are excluded from income and are recorded as part of accumulated other comprehensive income (loss). Transactions denominated in a foreign currency are remeasured at the current exchange rate at the transaction date and any related gains and losses are recognized in earnings. Fair value measurements Fair value is defined as the price that the Company expects to be paid upon the sale of an asset or expects to pay upon the transfer of a liability in an orderly transaction between market participants. There is a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from independent sources. Unobservable inputs reflect the Company’s own conclusions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. Assets and liabilities measured and reported at fair value are classified and disclosed in one of the following categories: •Level I—Quoted prices are available in active markets for identical investments as of the reporting date. The type of investments included in Level I include listed equities and listed derivatives. As required by U.S. GAAP, the Company does not adjust the quoted price for these investments. •Level II—Pricing inputs are other than quoted prices in active markets, which are either directly or indirectly observable as of the reporting date, and fair value is determined through the use of models or other valuation methodologies utilizing observable market inputs other than quoted prices. Investments which are generally included in this category include corporate bonds, less liquid and restricted equity securities, and certain over-the-counter derivatives. •Level III—Pricing inputs are unobservable for the asset or liability and include assets and liabilities where there is little, if any, market activity for the investment. The inputs into the determination of fair value require significant management judgment or estimation. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the investment. In cases in which the fair value of an investment is established using the net asset value (or its equivalent) as a practical expedient, the investment is not categorized within the fair value hierarchy. Use of estimates The preparation of these Consolidated Financial Statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the period. Assumptions used in management’s estimates are based on historical experience and other factors, and these assumptions require management to exercise judgment in the process of applying the Company’s accounting policies. Factors that may impact management’s estimates include expectations related to future events that management considers reasonable under the facts and circumstances. Actual results could differ from such estimates, and the differences may be material to the Consolidated Financial Statements. Operating segment The Company currently operates one reportable segment, Quant & Solutions, related to investment management services and products primarily to institutional clients. The Quant & Solutions segment consists of our ownership interest in Acadian LLC. See Note 21 for further information regarding the Company’s segment. Derivatives and Hedging The Company may utilize derivative financial instruments to hedge the risk of movement of interest rates and foreign currency on financial assets and liabilities. These derivative financial instruments may or may not qualify as hedges for accounting purposes. The Company records all derivative financial instruments as either assets or liabilities on its Consolidated Balance Sheets and measures these instruments at fair value. For a derivative financial instrument that qualifies as a hedge for accounting purposes and is designated as a hedging instrument, the effective portion of the derivative’s gain or loss is initially reported as a component of other comprehensive income (loss) and subsequently reclassified into earnings over the life of the hedge. The ineffective portion of the gain or loss is recognized in earnings immediately. Cash and cash equivalents The Company considers all highly liquid investments, including money market mutual funds with original maturities of three months or less, to be cash equivalents. Cash equivalents are stated at cost, which approximates market value due to the short-term maturity of these investments. Cash held by consolidated Funds is not available to fund general liquidity needs of the Company and is therefore classified as restricted cash. Investment advisory fees receivable The Company earns management and performance fees which are billed monthly, quarterly, or annually, according to the terms of the relevant investment management agreement. Management and performance fees that have been earned but have not yet been collected are presented as investment advisory fees receivable on the Consolidated Balance Sheets. Due to the short-term nature and liquidity of these receivables, the carrying amounts approximate their fair values. The Company typically does not record an allowance for doubtful accounts or bad debt expense, or any amounts recorded have been immaterial. Fixed assets Fixed assets are recorded at historical cost and depreciated using the straight-line method over their estimated useful lives. The estimated useful lives of office equipment and furniture and fixtures range from to ten years. Leasehold improvements are amortized over the shorter of their estimated useful lives or the remaining term of the lease. Computer software developed or obtained for internal use capitalized during the application development stage is amortized using the straight-line method over the estimated useful life of the software, which is generally five years or less. The costs of improvements that extend the life of a fixed asset are capitalized, while the costs of repairs and maintenance are expensed as incurred. Goodwill The Company records goodwill when the consideration transferred in a business combination exceeds the fair value of the identifiable net assets obtained. Goodwill is not amortized but rather is assessed for impairment at least annually using a qualitative and, if necessary, a quantitative approach. The Company performs its assessment for impairment of goodwill annually as of the first business day of the fourth quarter, or more frequently if then current facts and circumstances indicate an impairment may exist. Factors that could indicate an impairment include significant underperformance relative to historical or projected future operating results, significant changes in the Company’s use of the acquired assets in a business combination or the strategy for the Company’s overall business, and significant negative industry or economic trends. Goodwill is tested for impairment at the reporting unit level. The Company has one reporting unit, consisting of Acadian LLC, as of the annual goodwill impairment test date. The Company first considers various qualitative factors to determine if it is more likely than not that the fair value of the reporting unit is greater than its respective carrying amount, including goodwill. If, based on the qualitative assessment, it is determined that it is more likely than not that the fair value of the reporting unit is less than its respective carrying amount, therefore indicating that impairment may exist, the impact would be determined at that point through a quantitative assessment. For purposes of assessing potential impairment, the fair value of the reporting unit is estimated and compared to the carrying value of the reporting unit. The fair value of a reporting unit is based on discounted estimated future cash flows. The assumptions used to estimate fair value include management’s estimates of future growth rates, operating cash flows, discount rates, and terminal value. These assumptions and estimates can change in future periods based on market movement and factors impacting the expected business performance. Changes in assumptions or estimates could materially affect the determination of the fair value of the reporting unit. If it is determined that the carrying value of the reporting unit exceeds its fair value, the Company will recognize an impairment charge for the excess; not to exceed the total amount of goodwill allocated to that reporting unit. Based on the Company’s most recent annual goodwill impairment test, the Company concluded that the fair value of its reporting unit was more likely than not in excess of their carrying value. At the close of each year, management assessed whether there were any conditions present during the fourth quarter that would indicate impairment subsequent to the initial assessment date and concluded that no such conditions were present. Leases Contracts are evaluated at inception to determine whether such contract is or contains a lease. A lease is a contract that provides the right to control an identified asset for a period of time in exchange for consideration. For identified leases, the Company determines the classification as either an operating or finance lease. The Company currently leases certain office space and equipment which are classified as operating leases. Certain leases include lease and non-lease components, which the Company generally accounts for as a single component for all classes of assets. The Company’s lease agreements may contain renewal options and early termination clauses exercisable by the Company, rent escalation clauses, and/or other incentives provided by the landlord. Renewal options and early termination clauses that have been determined to be reasonably certain to be exercised are factored into the lease term. Rights and obligations attributable to identified leases with a term in excess of twelve months are recognized on the Company’s Consolidated Balance Sheets in the form of right‐of‐use (ROU) assets and operating lease liabilities. These balances are recognized when the underlying assets are made available for use by the lessor, which may be the date the Company gains access to begin leasehold improvements. Lease payments related to short‐term leases with a term of twelve months or less are not capitalized and rather are recognized as short‐term lease expense. Operating lease liabilities are initially and subsequently measured at the present value of future unpaid lease payments over the remaining lease term. For the purposes of this calculation, lease payments generally consist of fixed monthly lease payments related to use of the underlying assets. The Company uses its incremental borrowing rate to determine the present value of future unpaid lease payments based on information available at the lease commencement date. ROU assets are initially valued equal to the corresponding lease liabilities, adjusted for any lease incentives payable to the Company. Subsequently, the amortization of ROU assets is recognized as a component of operating lease expense. The total cost of operating leases is recognized on a straight‐line basis over the lease term and is composed of imputed interest on lease liabilities measured using the effective interest method and amortization of the ROU asset. Variable lease payments are primarily related to services such as common‐area maintenance, utilities, property taxes, and insurance, and are recognized as variable lease expense when incurred. ROU assets are tested for impairment whenever changes in facts or circumstances indicate that the carrying amount of an asset may not be recoverable. When the terms of a lease agreement are changed, management assesses the contract for a lease modification. Modifications of a lease generally result in remeasurement of the lease liability and the ROU asset. Earnings per share The Company calculates basic and diluted earnings per share (“EPS”) by dividing net income by its shares outstanding as outlined below. Basic EPS attributable to the Company’s stockholders is calculated by dividing “Net income attributable to controlling interests” by the weighted-average number of shares outstanding. Diluted EPS is similar to basic EPS, but adjusts for the effect of potential shares of common stock unless they are antidilutive. For periods with a net loss, potential shares of common stock are considered antidilutive. The Company considers two ways to measure dilution to earnings per share: (a) calculate the net number of shares that would be issued assuming any related proceeds are used to buy back outstanding shares (the treasury stock method), or (b) assume the gross number of shares are issued and calculate any related effects on net income available for stockholders (the if-converted or two-class method). As appropriate, the Company’s policy is to apply the more dilutive methodology upon issuance of such instruments. Deferred financing costs The Company records debt issuance costs of term loans as a direct deduction from the carrying amount of the associated debt liability. The Company records debt issuance costs of line-of-credit and revolving-debt arrangements as an asset and subsequently amortizes the deferred costs ratably over the term of the arrangements. Income taxes Deferred income taxes are recognized for the effects of temporary differences between the tax basis of an asset or liability and its reported amount in the Consolidated Financial Statements. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. Deferred income tax assets are subject to a valuation allowance if, in management’s opinion, it is not more-likely-than-not that these benefits will be realized. In evaluating the Company’s ability to recover its deferred tax assets, the Company considers all available positive and negative evidence including its past operating results, the existence of cumulative earnings or losses in the most recent years and its forecast of future taxable income. In estimating future taxable income, the Company develops assumptions including the amount of future pre-tax operating income and the reversal of temporary differences. These assumptions require significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates the Company is using to manage the underlying businesses. The Company’s accounting policy is to treat the global intangible low-taxed income taxes as period costs in the accounting and tax periods in which they are incurred. A tax benefit should only be recognized if it is more-likely-than-not that the position will be sustained based on its technical merits. The Company recognizes the financial statement benefit of a tax position only after considering the probability that a tax authority would uphold the position in an examination. For tax positions meeting a “more-likely-than-not” threshold, the amount recognized in the financial statements is the largest cumulative amount of benefit greater than 50% likely of being sustained. The more-likely-than-not threshold must continue to be met in each reporting period to support continued recognition of the benefit. Unrecognized tax benefits and related interest and penalties are adjusted periodically to reflect changing facts and circumstances. The Company’s accounting policy is to classify interest and related charges as a component of income tax expense. Non-controlling interests For certain entities that are consolidated, but not 100% owned, the Company reports non-controlling interests as equity on its Consolidated Balance Sheets. The Company's consolidated net income on the Consolidated Statements of Operations includes the income (loss) attributable to non-controlling interest holders of Funds. Ownership interests held by Acadian LLC key employees are categorized as liabilities on the Consolidated Balance Sheets and are revalued each reporting date, with movements treated as compensation expense in the Consolidated Statements of Operations. Non-controlling interests in consolidated Funds on the Consolidated Balance Sheets include undistributed income owned by the investors in the respective Funds. The Company’s consolidated net income on the Consolidated Statements of Operations includes the income (loss) attributable to non-controlling interest holders of these consolidated entities. Redeemable non-controlling interests The Company includes redeemable non-controlling interests related to certain consolidated Funds as temporary equity on the Consolidated Balance Sheets. Non-controlling interests in certain consolidated Funds are subject to monthly or quarterly redemption by the investors. When redeemable amounts become legally payable to investors, they are classified as a liability and included in total liabilities of consolidated Funds on the Consolidated Balance Sheets. Other comprehensive income (loss) Other comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances, excluding those resulting from investments by and distributions to owners. For the Company’s purposes, comprehensive income (loss) represents net income (loss), as presented in the accompanying Consolidated Statements of Operations, adjusted for foreign currency translation adjustments, net of tax and adjustments to the valuation and amortization of certain derivative securities, net of tax. Recently adopted accounting standards In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures. This amendment requires annual and interim disclosures of significant segment expenses that are regularly provided to the chief operating decision maker by reportable segment and clarifies that single reportable segment entities are required to apply all existing segment disclosures in the guidance. This amendment is effective for annual periods beginning after December 15, 2023, and for interim periods beginning after December 15, 2024. The Company adopted the updated guidance for the annual reporting period beginning January 1, 2024, which did not result in a material impact to our Consolidated Financial Statements. Refer to Note 21 for related disclosures about our reportable operating segment. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures, which requires public entities, on an annual basis, to provide disclosure of specific categories in the rate reconciliation, as well as disclosure of income taxes paid disaggregated by jurisdiction. This amendment is effective for annual periods beginning after December 15, 2024. The Company adopted the updated guidance for the annual reporting period beginning January 1, 2025, which did not result in a material impact to our Consolidated Financial Statements and related disclosures. In March 2024, the FASB issued ASU 2024-01, Compensation - Stock Compensation (Topic 718): Scope Application of Profits Interest and Similar Awards. This standard provides clarity regarding whether profits interest and similar awards are within the scope of Topic 718 of the Accounting Standards Codification. This amendment is effective for annual periods beginning after December 15, 2024, and interim periods within those annual periods. Early adoption is permitted. The Company adopted the updated guidance for the annual reporting period beginning January 1, 2025, which did not result in a material impact to our Consolidated Financial Statements and related disclosures. New accounting standards not yet adopted In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-4): Disaggregation of Income Statement Expenses, which requires disclosures of additional information and disaggregation of certain expenses included in the income statement. This amendment is for annual periods beginning after December 15, 2026, and interim periods beginning after December 15, 2027. The Company is evaluating the impact that the adoption will have on the Consolidated Financial Statements and have not yet determined the transition approach. In September 2025, the FASB issued ASU 2025-06, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, which clarifies and modernizes the accounting for internal-use software costs. This amendment is for annual periods beginning after December 15, 2027, and interim periods within those annual periods. The Company is evaluating the impact that the adoption will have on the Consolidated Financial Statements. In November 2025, the FASB issued ASU 2025-09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements to the Accounting for derivatives and hedging, which aims to more closely align hedge accounting with the economics of an entity’s risk management activities. This amendment is for annual periods beginning after December 15, 2026, and interim periods within those annual periods. The Company does not expect the additional disclosure requirements under ASU 2025-09 to have a material impact on the Consolidated Financial statements. The Company has considered all other newly issued accounting guidance that is applicable to the Company’s operations and the preparation of the Consolidated Financial Statements, including those that have not yet been adopted. The Company does not believe that any such guidance has or will have a material effect on its Consolidated Financial Statements and related disclosures.
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Investments |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investments [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investments | Investments Investments are comprised of the following at December 31 (in millions):
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Fair Value Measurements |
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| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Measurements | Fair Value Measurements The following table summarizes the Company’s assets and liabilities that are measured at fair value on a recurring basis at December 31, 2025 (in millions):
The following table summarizes the Company’s assets and liabilities that are measured at fair value on a recurring basis at December 31, 2024 (in millions):
(1)Assets and liabilities measured at fair value are comprised of financial investments managed by Acadian LLC. Equity securities and derivatives which are traded on a national securities exchange are stated at the last reported sales price on the day of valuation. To the extent these securities are actively traded and valuation adjustments are not applied, they are classified as Level I. The securities that trade in markets that are not considered to be active but are valued based on quoted market prices, dealer quotations or alternative pricing sources supported by observable inputs obtained by the Company from independent pricing services are classified as Level II. The Company obtains prices from independent pricing services that may utilize broker quotes, but generally the independent pricing services will use various other pricing techniques which take into account appropriate factors such as yield, quality, coupon rate, maturity, type of issue, trading characteristics and other data. The Company has not made adjustments to the prices provided. Assets of consolidated Funds also include investments in Corporate bonds. If the pricing services are only able to (a) obtain a single broker quote or (b) utilize a pricing model with unobservable inputs, such securities are classified as Level III. If the pricing services are unable to provide prices, the Company attempts to obtain one or more broker quotes directly from a dealer or values such securities at the last bid price obtained. In either case, such securities are classified as Level III. The Company performs due diligence procedures over third party pricing vendors to understand their methodology and controls to support their use in the valuation process to ensure compliance with required accounting disclosures. (2)Investments related to long-term incentive compensation plans of $37.9 million and $48.5 million at December 31, 2025 and December 31, 2024, respectively, were investments in publicly registered daily redeemable funds (some managed by Acadian LLC), which the Company has classified as trading securities and valued using the published price as of the measurement dates. Accordingly, the Company has classified these investments as Level I. (3)The uncategorized amounts of $13.3 million and $19.4 million at December 31, 2025 and December 31, 2024, respectively, relate to investments in unconsolidated Funds which consist primarily of investments in Funds and are valued using NAV which the Company relies on to determine their fair value as a practical expedient and has therefore not classified these investments in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to amounts presented in the Consolidated Balance Sheets. These unconsolidated Funds consist primarily of real estate investment Funds and other investment vehicles. The NAVs that have been provided by investees have been derived from the fair values of the underlying investments as of the measurement dates. Other investment vehicles are not subject to redemption restrictions. The real estate investment Funds of $3.1 million and $2.9 million at December 31, 2025 and December 31, 2024, respectively, were subject to longer than monthly or quarterly redemption restrictions, and due to their nature, distributions are received only as cash flows are generated from underlying assets over the life of the Funds. The range of time over which the underlying assets are expected to be liquidated by the investees is approximately one year from December 31, 2025. The valuation process for the underlying real estate investments held by the real estate investment Funds begins with each property or loan being valued by the investment teams. The valuations are then reviewed and approved by the valuation committee, which consists of senior members of the portfolio management, finance, and research teams. For certain properties and loans, the valuation process may also include a valuation by independent appraisers. In connection with this process, changes in fair value measurements from period to period are evaluated for reasonableness, considering items such as market rents, capitalization and discount rates, and general economic and market conditions. There were no significant transfers of financial assets or liabilities between Levels II or III during the year ended December 31, 2025. The carrying amount of cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities equal or approximate fair value based on the short-term nature of these instruments.
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Variable Interest Entities |
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Variable Interest Entities | Variable Interest Entities The Company, through Acadian LLC, sponsors the formation of various entities considered to be VIEs. These VIEs are primarily Funds managed by Acadian LLC and other partnership interests typically owned entirely by third-party investors. Certain Funds may be capitalized with seed capital investments from the Company and may be owned partially by Acadian LLC key employees and/or individuals that have ownership interests in Acadian LLC. The Company’s determination of whether it is the primary beneficiary of a Fund that is a VIE is based in part on an assessment of whether or not the Company and its related parties have the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. The Company, through Acadian LLC in its capacity as the investment advisor to the Funds, generally has power over the Funds and therefore the Company may be required to consolidate a Fund that is a VIE if it has potentially significant economics. Typically, the Fund’s investors are entitled to substantially all of the economics of these VIEs with the exception of management fees and performance fees, if any, earned by the Company or any investment the Company has made into the Funds. The Company generally is not the primary beneficiary of Fund VIEs created to manage assets for clients unless the Company’s ownership interest, including interests of related parties, is substantial. When the Company’s ownership interest in a Fund, including interests of related parties, is significant, the Company generally consolidates the VIE. If the Company subsequently determines that it no longer controls the managed funds in which it has invested, or no longer has an obligation to absorb losses or rights to receive benefits, the Company will deconsolidate the Fund. The following table presents the assets and liabilities of Funds that are VIEs consolidated by the Company (in millions):
“Investments” consist of investments in equity securities, corporate bonds, and derivative securities. To the extent the Company also has consolidated Funds that are not VIEs, the assets and liabilities of those Funds are not included in the table above. The assets of consolidated VIEs presented in the table above belong to the investors in those Funds, are available for use only by the Fund to which they belong, and are not available for use by the Company to the extent they are held by non-controlling interests. Any debt or liabilities held by consolidated Funds have no recourse to the Company’s general credit. The Company’s involvement with Funds that are VIEs but that are not consolidated by the Company is generally limited to that of an investment manager and its investment in the unconsolidated VIE, if any. The Company’s investment in any unconsolidated VIE generally represents an insignificant interest of the Fund’s net assets and assets under management, such that the majority of the VIE’s results are attributable to third parties. The Company’s exposure to risk in these entities is generally limited to any capital contribution it has made or is required to make and any earned but uncollected management fees. The Company has not issued any investment performance guarantees to these VIEs or their investors. The following information pertains to unconsolidated VIEs for which the Company holds a variable interest at December 31 (in millions):
(1)Includes the carrying value of investments the Company has made in the unconsolidated VIEs in which the Company is not the primary beneficiary.
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Fixed Assets |
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| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fixed Assets | Fixed Assets The Company’s fixed assets, which are primarily located in the U.S., consisted of the following at December 31 (in millions):
Depreciation and amortization expense was $16.6 million, $18.5 million and $17.3 million for the years ended December 31, 2025, 2024 and 2023, respectively. During the year ended December 31, 2025 and 2024, the Company disposed of property, plant, and equipment with a cost basis of $4.4 million and $19.0 million, respectively, and accumulated depreciation of $(4.4) million and $(19.0) million, respectively. These disposals included leasehold improvements, office equipment, furniture and fixtures and software. There were no gains or losses on disposals recorded during the year ended December 31, 2025 and 2024.
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Leases |
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| Leases [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases | Leases The Company has operating leases for corporate offices, data centers and certain equipment. The operating leases have remaining lease terms of less than 1 year to 8 years, some of which include options to extend the leases for up to 5 years. Some of the Company’s leases also include options to terminate the lease prior to expiration. The following table summarizes information about the Company’s operating leases for the years ended December 31 (in millions):
In determining the incremental borrowing rate, the Company considered the interest rate yield for the specific interest rate environment and the Company’s credit spread at the inception of the lease. For the years ended December 31, 2025 and 2024, the weighted average remaining lease term was 7.6 years and 8.5 years, respectively. For each of the years ended December 31, 2025 and 2024 the weighted average discount rate was 3.55%. Maturities of operating lease liabilities were as follows (in millions):
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Goodwill |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Intangible Assets Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill | Goodwill The following table presents the changes in goodwill in 2025 and 2024 (in millions):
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Related Party Transactions |
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| Related Party Transactions [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related Party Transactions | Related Party Transactions Amounts due for investment advisory fee receivables from related parties were comprised of the following at December 31 (in millions):
Related party transactions included in the Company’s Consolidated Statements of Operations for the years ended December 31 consisted of (in millions):
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Accounts Payable and Accrued Expenses |
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| Accounts Payable and Accrued Liabilities [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accounts Payable and Accrued Expenses | Accounts Payable and Accrued Expenses Accounts payable and accrued expenses consisted of the following at December 31 (in millions):
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Other Compensation Liabilities |
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| Share-Based Payment Arrangement [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Other Compensation Liabilities | Other Compensation Liabilities Other compensation liabilities consisted of the following at December 31 (in millions):
Profit interests compensation expense amounted to $38.0 million in 2025, $19.0 million in 2024, and $0.0 million in 2023. Redemptions of profit sharing interests from Acadian LLC key employees for cash were $2.7 million in 2025, $0.3 million in 2024, and $0.0 million in 2023.
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Borrowings and Debt |
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| Debt Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Borrowings and Debt | Borrowings and Debt The Company’s borrowings and long-term debt were comprised of the following as of the dates indicated (in millions):
(1)Fair value approximates carrying value because the credit facility and the delayed draw term loan have variable interest rates based on selected short term market rates. (2)On October 28, 2025, Acadian LLC’s $140 million revolving credit facility (the “Prior LLC Credit Agreement”) was terminated and replaced with a new $175 million revolving credit facility. The weighted average interest rate for the Prior LLC Credit Agreement was 5.93%, 6.93% and 6.19% in 2025, 2024 and 2023, respectively. (3)The difference between the principal amounts and the carrying values of the senior notes in the table above reflects the unamortized debt issuance costs and discounts. (4)On December 1, 2025, the Company completed the full redemption of the $275 million aggregate principal amount outstanding of its 4.80% Senior Notes due July 27, 2026. As a result of this transaction, the Company recorded a $1.4 million loss on extinguishment of debt within the Consolidated Statement of Operations for the year ended December 31, 2025. The Delayed Draw Term Loan Credit Agreement and Revolving Credit Agreement On October 28, 2025 (the “Closing Date), Acadian LLC entered into a Delayed Draw Term Loan Credit Agreement among Acadian LLC, the Lenders from time to time party thereto, and Bank of America, N.A. (“Bank of America”), as the Administrative Agent (the “DDTL Credit Agreement”) and a Revolving Credit Agreement among Acadian LLC, the Lenders from time to time party thereto, Bank of America, as the Administrative Agent and a L/C Issuer and the other L/C Issuers from time to time party thereto (the “Revolving Credit Agreement”). The DDTL Credit Agreement provides for a delayed draw term loan facility in an aggregate principal amount, as of the Closing Date, of up to $200 million (the “Term Facility”). The term loans mature on October 28, 2028. Subject to certain conditions, Acadian LLC may increase the size of the Term Facility to an aggregate maximum principal amount of $275 million. None of the lenders under the Term Facility are obligated to provide such additional commitments to Acadian LLC. Loans under the DDTL Credit Agreement bear interest, at Acadian LLC’s option, at a rate per annum equal to (i) Term SOFR for the applicable interest period plus an applicable margin equal to a range of 1.5% to 2.0% depending on Acadian LLC’s consolidated leverage ratio or (ii) an alternate base rate (defined as a rate equal to the highest of (i) the Federal Funds Rate plus 0.5%, (ii) Bank of America’s published “prime rate” and (iii) Term SOFR plus 1.0%) plus an applicable margin equal to a range of 0.5% to 1.0% depending on Acadian LLC’s consolidated leverage ratio. The weighted average interest rate for the Term Facility was 5.65% in 2025. Financial covenants under the Term Facility include the quarterly maintenance by the Acadian LLC of (i) a maximum Consolidated Net Leverage Ratio (as defined in the DDTL Credit Agreement) of not greater than 2.5x and (ii) a minimum Consolidated Interest Coverage Ratio (calculated as the ratio of Acadian LLC Consolidated EBITDA (as defined in the DDTL Credit Agreement), divided by Acadian LLC interest expense for the four consecutive fiscal quarters ended on or immediately prior to the date of determination) of not less than 4.0x. For purposes of calculating the Consolidated Net Leverage Ratio, the DDTL Credit Agreement refers to Consolidated Funded Indebtedness (as defined in the DDTL Credit Agreement) minus unrestricted cash at Acadian LLC. The Revolving Credit Agreement provides for senior unsecured revolving credit commitments as of the Closing Date in an aggregate principal amount, as of the Closing Date, of up to $175 million (the “Revolving Facility”). The revolving commitments mature on October 28, 2028. Subject to certain conditions, Acadian LLC may increase the size of the Revolving Facility to an aggregate maximum principal amount of $275 million, which may be established in the form of revolving commitments or term loan commitments. None of the lenders under the Revolving Facility are obligated to provide such additional commitments to Acadian LLC. Borrowings under the Revolving Credit Agreement bear interest, at Acadian LLC's option, at a rate per annum equal to (i) Term SOFR (as defined in the Revolving Credit Agreement) for the applicable interest period plus an applicable margin equal to a range of 1.5% to 2.0% depending on Acadian LLC’s Consolidated Leverage Ratio (as defined in the Revolving Credit Agreement) or (ii) an alternate base rate (defined as a rate equal to the highest of (i) the Federal Funds Rate plus 0.5%, (ii) Bank of America's published "prime rate" and (iii) Term SOFR plus 1.0%) plus an applicable margin equal to a range of 0.5% to 1.0% depending on Acadian LLC’s Consolidated Leverage Ratio. The Company is required to pay a commitment fee at a per annum rate ranging from 0.25% to 0.375%, with such amount based on Acadian LLC’s Consolidated Leverage Ratio on the daily undrawn amount of the revolving commitments, and customary letter of credit participation and fronting fees. As of December 31, 2025, Acadian LLC had unused lines of credit of $172.5 million comprised of undrawn commitments on the Revolving Credit Facility of $175 million less a $2.5 million letter of credit with Bank of America related to one of the Acadian LLC’s current office spaces. As of December 31, 2025, the aggregate maturities of debt commitments, based on their contractual terms, are as follows:
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Income Taxes |
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| Income Tax Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes | Income Taxes Income before income taxes consisted of the following for the years ended December 31 (in millions):
The components of income tax expense for the years ended December 31 are as follows (in millions):
The Company reclassified the tax effects related to derivative securities and foreign currency translation within other comprehensive income of $0.6 million, $(0.8) million and $(0.9) million in the years ended December 31, 2025, 2024 and 2023, respectively. During the year ended December 31, 2025, the Company adopted ASU 2023-09 on a retrospective basis to enhance the income taxes disclosure regarding income taxes paid and the rate reconciliation disclosure. The income tax paid, net of refunds, by the Company for the years ended December 31 are as follows (in millions):
Income taxes paid, net of refunds, exceed five percent of total income taxes paid (net) in the following jurisdictions (in millions):
The differences between income taxes expected at the U.S. federal statutory income tax rate and income taxes reported for the years ended December 31 are as follows (in millions):
The Company’s effective income tax rate is higher than the US federal tax rate of 21% primarily due to state taxes and executive compensation, partially offset by non-controlling interest. State taxes in Massachusetts and New York made up greater than 50% of the tax effect of state income taxes. During the year ended December 31, 2023, Massachusetts enacted a change in the state’s apportionment formula for corporations effective for tax years beginning on or after January 1, 2025. The Company measures its deferred tax assets and liabilities at the enacted rates for the period in which these items are expected to reverse. As a result, in the year ended December 31, 2023, the Company recorded the discrete tax impact due to the effect of the change in tax law on the measurement of its deferred tax assets. As of December 31, 2025, the Company maintains the assertion that the foreign unremitted earnings of multiple foreign subsidiaries are not permanently reinvested. The amount of deferred tax recorded during the period was not material. For foreign subsidiaries whose investments are permanent in duration, income and foreign withholding taxes have not been provided on the unremitted earnings of those subsidiaries. This amount may become taxable upon repatriation from the subsidiary or a sale or liquidation of the subsidiary. The amount of such unremitted earnings and the amount of any unrecognized deferred income tax liability on these unremitted earnings is immaterial at December 31, 2025. The significant components of deferred tax assets and deferred tax liabilities for the years ended December 31 are as follows (in millions):
At December 31, 2025 and 2024, the Company’s net deferred tax asset primarily relates to its outside basis difference in its investment in Acadian LLC, which is treated as a partnership for federal income tax purposes. The Company assesses whether a valuation allowance should be established against its deferred income tax assets based on consideration of all available evidence, both positive and negative, using a more likely than not standard. In evaluating the Company’s ability to recover its deferred tax assets, the Company considers all available positive and negative evidence including the existence of cumulative income in the most recent fiscal years, changes in the business in which the Company operates, and the Company’s ability to forecast future taxable income. The weight given to the evidence is commensurate with the extent to which it can be objectively verified. The more negative evidence that exists, the more positive evidence that is necessary and the more difficult it is to support a conclusion that a valuation allowance is not needed. The Company has three years of cumulative earnings as of December 31, 2025 and 2024. As of December 31, 2025, management believes it is more likely than not that the balance of the deferred tax assets will be realized, as such, no valuation allowance is required based on forecasted taxable income. A reconciliation of the change in gross unrecognized tax benefits for the years ended December 31 is as follows (in millions):
The Company’s liability for uncertain tax positions includes unrecognized benefits of $0.9 million and $1.0 million at December 31, 2025 and 2024, respectively, that if recognized would affect the effective tax rate on income. The Company recognized $0.0 million, $0.1 million, and $0.1 million in interest and penalties in its income tax provision for the years ended December 31, 2025, 2024 and 2023, respectively. The Company’s liability for uncertain tax positions at December 31, 2025 and 2024 includes accrued interest and penalties of $0.2 million and $0.2 million, respectively. The Company and its subsidiaries file tax returns in the U.S., U.K., state, local, and other foreign jurisdictions. As of December 31, 2025, the Company is generally no longer subject to income tax examinations by U.S. federal, state, local, or foreign tax authorities for calendar years prior to 2021. The Company is periodically under examination by various taxing authorities. Examinations are inherently uncertain, may result in payment of additional taxes or the recognition of tax benefits and may be in process for extended periods of time. At December 31, 2025 the Company is subject to examination in two jurisdictions. On July 4, 2025, H.R.1, commonly referred to as the One Big Beautiful Bill Act (the “OBBBA”), was enacted in the U.S., which includes a broad range of tax reform provisions, including extending and modifying certain key Tax Cuts and Jobs Act provisions (both domestic and international). The legislation has multiple effective dates, with certain provisions effective in 2025 and others to be implemented through 2027. The OBBBA did not have a material impact to the income tax expense during the period ended December 31, 2025.
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Commitments and Contingencies |
12 Months Ended |
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Dec. 31, 2025 | |
| Commitments and Contingencies Disclosure [Abstract] | |
| Commitments and Contingencies | Commitments and Contingencies Operational commitments A number of our subsidiaries operate under regulatory authorities that require that they maintain minimum financial or capital requirements. Management is not aware of any violations of such financial requirements occurring during the periods presented. Guaranty The Company entered into a guaranty for an office space security deposit on behalf of Acadian LLC in the amount of $2.5 million in January 2020. This represents the maximum potential amount of future (undiscounted) payments that the Company could be required to make under the guaranty in the event of default by the guaranteed parties. This guaranty expires in 2033. There are no liabilities recorded on the Consolidated Balance Sheets as of December 31, 2025 and 2024, related to this guaranty. Litigation The Company is subject to claims, legal proceedings, and other contingencies in the ordinary course of its business activities. Each of these matters is subject to various uncertainties, and it is possible that some of these matters may be resolved in a manner unfavorable to the Company. The Company establishes accruals for matters for which the outcome is probable and can be reasonably estimated. As of December 31, 2025 and 2024, there were no material accruals for claims and the Company does not believe any outstanding matters will have a material adverse effect on the Company. Indemnifications In the normal course of business, the Company may enter into contracts that contain a variety of representations and warranties and which provide general indemnifications. The Company’s maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against the Company that have not yet occurred. Foreign tax contingency The Company has clients in non-U.S. jurisdictions which require entities that are conducting certain business activities in such jurisdictions to collect and remit tax assessed on certain fees paid for goods and services provided. The Company does not believe this requirement is applicable based on its limited business activities in these jurisdictions. However, given the fact that uncertainty exists around the requirement, the Company has chosen to evaluate its potential exposure related to non-collection and remittance of these taxes. At December 31, 2025 and 2024, management of the Company has estimated the potential maximum exposure and concluded that it is not material. No accrual for the potential exposure has been recorded as the probability of incurring any potential liability relating to this exposure is not probable at December 31, 2025 and 2024. Considerations of credit risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash, cash equivalents, restricted cash and investments. The Company maintains cash and cash equivalents and short-term investments with various financial institutions. These financial institutions are typically located in cities in which the Company operates. Cash deposits at the various financial institutions may exceed Federal Deposit Insurance Corporation insurance limits.
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Earnings Per Share |
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| Earnings Per Share | Earnings Per Share Basic earnings per share is calculated by dividing net income attributable to controlling interests by the weighted-average number of shares of common stock outstanding. Diluted earnings per share is similar to basic earnings per share, but is adjusted for the effect of potentially issuable common stock, except when inclusion is anti-dilutive. The calculation of basic and diluted earnings per share of common stock for the years ended December 31, 2025, 2024 and 2023 is as follows (dollars in millions, except per share data):
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| Revenue | Revenue Management fees The Company’s management fees are a function of the fee rates charged to clients, which are typically expressed in basis points, and the levels of the Company’s assets under management. The most significant driver of increases or decreases in this average fee rate is changes in the mix of the Company’s assets under management caused by net inflows or outflows in certain asset classes or disproportionate market movements. Performance fees The Company’s products subject to performance fees earn these fees upon exceeding high-water mark performance thresholds or outperforming a hurdle rate. Performance fees are recorded in revenues when the contractual performance criteria have been met and when it is probable that a significant reversal of revenue recognized will not occur in future reporting periods. Disaggregation of management fee revenue The geographic disaggregation of management fee revenue by location of client domicile for the years ended December 31 (in millions) is presented below:
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Employee Benefits |
12 Months Ended |
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Dec. 31, 2025 | |
| Retirement Benefits [Abstract] | |
| Employee Benefits | Employee Benefits The Company has various defined contribution plans covering substantially all of its full-time employees. In addition to pre-tax contributions made by employees, the Company also makes contributions to the qualified plans annually. The Company also has non-qualified defined contribution plans covering certain senior employees. The Company has established a Deferred Compensation Plan under which the Board of Directors makes awards that may be invested by the recipient in investments deemed available under the plan. Vesting of awards under the Deferred Compensation Plan is based on the number of years of service already provided by the employee at the date of the grant. In addition, the Company has established a Voluntary Deferral Plan that provides officers of the Company the opportunity to voluntarily defer a portion of their compensation. The compensation deferred is deemed to be invested in one or more investment options available under the plan. These non-qualified plans are unfunded, although the Company does make contributions to a consolidated irrevocable rabbi trust to hedge its risks in terms of providing returns to employees on their deemed investments held in the plan. As of December 31, 2025 and 2024, a total of $37.9 million and $48.4 million, respectively, had been recorded as long-term compensation liabilities and a total of $37.9 million and $48.5 million, respectively, had been invested under the Deferred Compensation and Voluntary Deferral plans. The change in the fair value of long-term compensation liabilities and the change in fair value of the assets invested under the Deferred Compensation and Voluntary Deferral plans was $5.1 million and $5.0 million, respectively, for the year ended December 31, 2025, $4.6 million and $4.6 million, respectively, for the year ended December 31, 2024, and $4.8 million and $4.9 million, respectively, for the year ended December 31, 2023. The Company recorded total expenses in relation to its qualified and non-qualified plans within compensation and benefits in its Consolidated Statements of Operations for the years ended December 31, 2025, 2024 and 2023 of $9.2 million, $8.5 million and $5.5 million, respectively.
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Equity-based Compensation |
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| Equity-based Compensation | Equity-based Compensation Cash-settled Acadian LLC awards The Company maintains a compensation arrangement with Acadian LLC whereby in exchange for continued service, Acadian LLC equity is either purchased by, or granted to Acadian LLC key employees subject to a limit imposed by the Company, and may be repurchased either by Acadian LLC key employees or by the Company at a future date at the then applicable fair value, subject to service requirements having been met. Compensation expense is recognized over the requisite service period equal to the cumulative vested fair value of the award at the end of each period up to the vesting date. The Company accounts for the arrangement as “cash-settled” share-based payments, and accordingly a corresponding share-based payment liability is recorded. The fair value of the liabilities are determined with the assistance of third party valuation specialists using discounted cash flow analyses, which incorporate assumptions for the forecasted earnings information, market risk adjustments, discount rates, when award holders maximize value and post-vesting restrictions. Vested Acadian LLC liability-classified equity awards are revalued at each period end until settlement date, with changes in the liabilities included within compensation expense. The following table presents the changes in the share-based payments liability for the years ended December 31 (in millions):
Equity-settled corporate awards Acadian Asset Management Inc. equity incentive plan The Company has established various plans under which it is authorized to grant restricted stock awards (“RSAs”), restricted stock units (“RSUs”), performance-based restricted stock awards (“Performance-based RSAs”), performance-based restricted stock units (“Performance-based RSUs”) and stock option awards. These plans are maintained to provide equity-based compensation arrangements to employees and non-executive directors. Equity ownership encourages employees and directors to act in the best long-term interests of the Company. As of December 31, 2025, the Company had 4.5 million shares of common stock available to be granted under the various plans. Compensation expense recognized by the Company for the years ended December 31, 2025, 2024 and 2023 in relation to these awards was $3.0 million, $0.9 million, and $1.2 million respectively. The related income tax benefit recognized for years ended December 31, 2025, 2024 and 2023 was $0.1 million, $0.1 million and $0.2 million respectively. Unamortized compensation expense related to unvested RSUs at December 31, 2025 of $7.3 million is expected to be recognized over a weighted-average period of 1.9 years. The service inception date for annual awards granted in 2025 is deemed to be January 1, 2024. It is anticipated that annual awards for 2025 with a fair value of $8.8 million will be granted during 2026 with a service inception date of January 1, 2025. Grants of restricted stock units in Acadian Asset Management Inc. The following table summarizes the activity related to restricted stock units:
The grant date fair value per share, calculated based on the closing price as quoted on the New York Stock Exchange on the measurement date, is used to determine the fair value of restricted stock units granted to employees. Restricted stock units under the plan generally have a vesting period of to three years. Grants of Stock Options in Acadian Asset Management Inc. There were no stock option awards outstanding during the year ended December 31, 2025. The following tables summarizes the activity related to the Company’s stock option awards for 2024 and 2023, respectively:
There were no stock options granted by the Company during the years ended December 31, 2025, 2024, and 2023. There were no stock options vested and no stock options exercised during the year ended December 31, 2025. The total grant date fair value of options vested during the years ended December 31, 2024 and 2023 was $0.0 million and $1.3 million, respectively. The total intrinsic value of options exercised during the years ended December 31, 2024 and 2023 was $24.7 million and $5.1 million, respectively. The Company received $0.1 million and $0.0 million related to the exercise of options for the year ended December 31, 2024, and 2023, respectively. The Company realized tax benefits of $0.1 million, and $0.3 million related to the exercise of options for the year ended December 31, 2024, and 2023, respectively. Shares issued upon exercise of the options represent newly issued shares.
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| Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss) The components of accumulated other comprehensive income (loss), net of tax, for the years ended December 31, 2025, 2024 and 2023 were as follows (in millions):
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Derivatives and Hedging |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
| Derivatives and Hedging | Derivatives and Hedging Cash flow hedge In July 2015, the Company entered into a series of $300.0 million notional Treasury rate lock contracts which were designated and qualified as cash flow hedges. The Company documented its hedging strategy and risk management objective for this contract in anticipation of a future debt issuance. The Treasury rate lock contract eliminated the impact of fluctuations in the underlying benchmark interest rate for future forecasted debt issuances. The Company assessed the effectiveness of the hedging contract at inception and on a quarterly basis thereafter. The forecasted debt issuances occurred in July 2016 and the Treasury rate lock, which had an accumulated fair value of $(34.4) million, was settled. On December 1, 2025, the Company completed the full redemption of the $275 million aggregate principal amount outstanding of its 4.80% Senior Notes due July 27, 2026. As a result of this transaction, amortization of $2.7 million (of the $6.3 million interest expense reclassified to earnings for the year ended December 31, 2025) was accelerated and reclassified to earnings as interest expense. As of December 31, 2025, there was no balance relating to the cash flow hedge recorded in accumulated other comprehensive income (loss) before tax. The Company reclassified $6.3 million, $3.6 million and $3.4 million for the years ended December 31, 2025, 2024 and 2023, respectively.
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Segment Information |
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| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Information | Segment Information The Company has the following reportable segment: •Quant & Solutions—incorporates strategies that utilize advanced technology to collect and analyze data, aiming to identify mispriced assets and generate attractive risk-adjusted returns for investors; portfolios include Emerging Equity, Non-U.S. Equity, Global Equity, Small Cap Equity, Enhanced Equity, Equity Extensions, and Systematic Credit. This segment consists of our ownership interest in Acadian LLC. The corporate holding company (“Hold Co”) is included within the Unallocated Corporate expenses category. The Hold Co expenses are not allocated to the Company’s business segment, but the Chief Operating Decision Maker (“CODM”) does consider the cost structure of the corporate head office when evaluating the financial performance of the segment. The CODM is the Company’s Chief Executive Officer. Performance Measure The primary measure used by the CODM in measuring performance and allocating resources to the segment is economic net income (“ENI”). ENI is used to make resource allocation decisions, determine appropriate levels of investment or dividend payout, manage balance sheet leverage, determine variable compensation and equity distributions, and incentivize management. The Company defines ENI for the segment as ENI revenue less ENI operating expenses. The ENI adjustments to U.S. GAAP include both reclassifications of U.S. GAAP revenue and expense items, as well as adjustments to U.S. GAAP results, primarily to exclude non-cash, non-economic expenses recognized under U.S. GAAP. This measure supplements and should be considered in addition to, and not in lieu of, the Consolidated Statements of Operations prepared in accordance with U.S. GAAP. The Company does not disclose total asset information for its reportable segment as the information is not reviewed by the CODM. ENI revenue includes management fees, performance fees and other revenue under U.S. GAAP, adjusted to include management fees paid to the Company by consolidated Funds. Significant segment ENI expenses include fixed compensation and benefits, variable compensation, and Acadian LLC key employee distributions included in compensation and benefits expense under U.S. GAAP, depreciation and amortization under U.S. GAAP, adjusted to exclude non-cash expenses representing changes in the value of Acadian LLC equity and profit interests held by Acadian LLC key employees, capital transaction costs, and restructuring costs. Other segment items include ENI general and administrative expense under U.S. GAAP, adjusted to exclude restructuring costs and include sales based compensation. ENI segment results are also adjusted to exclude consolidated Fund revenues, consolidated Fund expenses and investment return recorded under U.S. GAAP. Segment Presentation The following table sets forth summarized operating results for the Company’s segment and related adjustments necessary to reconcile the segment economic net income to arrive at the Company’s consolidated U.S. GAAP net income attributable to controlling interests for the years ended December 31 (in millions):
Reconciling Adjustments: (a)Adjustment to exclude consolidated Funds revenues, which are included in U.S. GAAP revenue. (b)Fixed compensation and benefits includes base salaries, payroll taxes and the cost of benefit programs provided. (c)Variable compensation is contractually set and calculated individually for Acadian LLC bonuses. Amounts are adjusted for non-cash Acadian LLC key employee equity revaluations and severance relating to restructuring costs. (d)Acadian LLC key employee distributions includes the share of Acadian LLC profits after variable compensation that is attributable to the Acadian LLC key employee equity and profits interests holders, according to their ownership interests. (e)Depreciation and amortization includes U.S. GAAP depreciation and amortization, adjusted for costs associated with the wind-down of the MACS business in the standalone format. (f)Other segment items includes segment systems, portfolio administration costs and other general & administrative expenses adjusted to exclude restructuring costs. (g)Included in unallocated corporate expenses for the years ended December 31, 2025, 2024 and 2023 was compensation and benefits of $10.9 million, $10.0 million, and $9.2 million, respectively, related to Hold Co which are included in U.S. GAAP net income attributable to controlling interests. Included in unallocated corporate expenses for the years ended December 31, 2025, 2024 and 2023 was general and administrative expenses of $7.4 million, $9.4 million, and $9.9 million, respectively, related to Hold Co which are included in U.S. GAAP net income attributable to controlling interests. (h)Adjustments and reconciling items includes consolidated Funds revenue, consolidated Fund expense, and restructuring costs. (i)Non-cash Acadian LLC key employee equity revaluations represent changes in the value of Acadian LLC equity and profit interests held by Acadian LLC key employees, which are included within the U.S. GAAP compensation and benefits expense.
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Subsequent Events |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Subsequent Events [Abstract] | |
| Subsequent Events | Subsequent Events On February 4, 2026, the Company’s Board of Directors approved a quarterly interim dividend of $0.10 per common share payable on March 27, 2026 to common shareholders of record as of the close of business March 13, 2026. As of February 27, 2026, the outstanding balance on Acadian LLC’s Revolving Credit Facility was $25 million.
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Insider Trading Arrangements |
3 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Trading Arrangements, by Individual | |
| Rule 10b5-1 Arrangement Adopted | false |
| Non-Rule 10b5-1 Arrangement Adopted | false |
| Rule 10b5-1 Arrangement Terminated | false |
| Non-Rule 10b5-1 Arrangement Terminated | false |
Insider Trading Policies and Procedures |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Insider Trading Policies and Procedures [Line Items] | |
| Insider Trading Policies and Procedures Adopted | true |
Cybersecurity Risk Management and Strategy Disclosure |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Cybersecurity Risk Management, Strategy, and Governance [Line Items] | |
| Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block] | We have adopted processes designed to identify, assess and manage material risks from cybersecurity threats. Those processes include response to and an assessment of internal and external threats to the security, confidentiality, integrity and availability of our data and systems along with other material risks to our operations, at least annually or whenever there are material changes to our systems or operations. Our Management Risk Committee (MRC) collaborates with our Chief Technology Officer (CTO) and Chief Information Security Officer (CISO) along with the IT Department to evaluate and address cybersecurity risks in alignment with our business objectives and operational needs. Our CTO and CISO along with the IT Department implement processes and technologies to provide security monitoring and vulnerability management. We have an incident response plan in place with designated roles and responsibilities for responding to and escalating cybersecurity events and incidents. As part of our risk management process, we engage outside providers to conduct periodic penetration testing and vulnerability assessments. We maintain a third-party risk management program that includes vendor due diligence at onboarding, periodic assessments, and continuous risk monitoring. Assessments include reviews of security controls and cybersecurity questionnaires or other technical evaluations. In addition, we maintain a vendor risk register and review risk ratings semi-annually. As of the date of this report, we have not experienced a cybersecurity incident that resulted in a material effect on our business strategy, results of operations, or financial condition.
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| Cybersecurity Risk Management Processes Integrated [Flag] | true |
| Cybersecurity Risk Management Processes Integrated [Text Block] | We have adopted processes designed to identify, assess and manage material risks from cybersecurity threats. Those processes include response to and an assessment of internal and external threats to the security, confidentiality, integrity and availability of our data and systems along with other material risks to our operations, at least annually or whenever there are material changes to our systems or operations.
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| Cybersecurity Risk Management Third Party Engaged [Flag] | true |
| Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] | true |
| Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] | false |
| Cybersecurity Risk Board of Directors Oversight [Text Block] | Our Board of Directors provides oversight of the Company’s cybersecurity risk management program. |
| Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] | The Audit Committee of our Board of Directors has primary responsibility for oversight of cybersecurity and is briefed on cybersecurity risks quarterly and following any material cybersecurity incidents. |
| Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] | Reporting to the Audit Committee of our Board of Directors, our CTO and CISO may address overall assessment of the Company’s compliance with our cybersecurity policies and procedures, risk management, service provider arrangements, testing results and security incident response and makes recommendations for changes and updates to policies, procedures, and technologies related to cybersecurity and IT risk management.
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| Cybersecurity Risk Role of Management [Text Block] | Our cybersecurity program is managed by our CTO and CISO, who have served in this role since 2025. Our CISO has over 25 years of industry experience in information technology and maintains industry certifications such as the ISC2 CISSP. Reporting to the Audit Committee of our Board of Directors, our CTO and CISO may address overall assessment of the Company’s compliance with our cybersecurity policies and procedures, risk management, service provider arrangements, testing results and security incident response and makes recommendations for changes and updates to policies, procedures, and technologies related to cybersecurity and IT risk management.
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| Cybersecurity Risk Management Positions or Committees Responsible [Flag] | true |
| Cybersecurity Risk Management Positions or Committees Responsible [Text Block] | Our cybersecurity program is managed by our CTO and CISO, who have served in this role since 2025. |
| Cybersecurity Risk Management Expertise of Management Responsible [Text Block] | Our CISO has over 25 years of industry experience in information technology and maintains industry certifications such as the ISC2 CISSP. |
| Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] | Reporting to the Audit Committee of our Board of Directors, our CTO and CISO may address overall assessment of the Company’s compliance with our cybersecurity policies and procedures, risk management, service provider arrangements, testing results and security incident response and makes recommendations for changes and updates to policies, procedures, and technologies related to cybersecurity and IT risk management.
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| Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] | true |
Basis of Presentation and Significant Accounting Policies (Policies) |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Accounting Policies [Abstract] | |
| Basis of presentation | Basis of presentation These Consolidated Financial Statements reflect the historical balance sheets, statements of operations, statements of comprehensive income, statements of changes in stockholders’ equity and statements of cash flows of the Company. Within these Consolidated Financial Statements, Paulson and its related entities, as defined above, are considered “related parties.” The Consolidated Financial Statements are prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”). All dollar amounts, except per-share data in the text and tables herein, are stated in millions of United States Dollars (“USD”) unless otherwise indicated. Transactions between the Company and its related parties are included in the Consolidated Financial Statements.
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| Revenue recognition | Revenue recognition Revenue from contracts with customers The Company recognizes revenue in accordance with Accounting Standards Codification Topic 606 (“ASC 606”), Revenue from Contracts with Customers. Revenue is recognized in a manner that depicts the Company’s transfer of promised services to its customers in an amount that reflects the consideration the Company expects to receive in exchange for those services net of certain rebates. The application of ASC 606 requires an entity to identify its contract(s) with a customer, identify the performance obligations in the contract(s), determine the transaction price, allocate the transaction price to the performance obligations in the contract(s), and recognize revenue when (or as) the entity satisfies a performance obligation. A performance obligation, the unit of account under ASC 606, is a promise in a contract to transfer a distinct good or service to a customer. The majority of the Company’s contracts contain a single performance obligation, the delivery of investment management services. The promise to transfer these services is not separately identifiable from any other promises in the contracts and, therefore, not distinct. In these contracts, the Company earns a management fee for providing its services. These fees are the consideration to which the Company expects to be entitled in exchange for transferring the promised services to the customer. The Company recognizes revenue for its investment management services ratably over time on a monthly basis, because the customer simultaneously receives and consumes the benefits of the services as they are performed. The Company’s management fee revenue is calculated based upon levels of assets under management (“AUM”) multiplied by a fee rate. Management fee revenue is typically calculated on a monthly or quarterly basis. In certain of the Company’s contracts, the transaction price is variable, because AUM is based on an average over a specified period. In determining the transaction price, variable consideration is included only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized would not occur when the uncertainty associated with the variable consideration is resolved. The Company’s variability around these fees is typically resolved by the end of each period when the actual average AUM for that contract period is calculated. Certain of the Company’s contracts include performance-based fees in addition to or in lieu of management fees. Performance fees are generally assessed as a percentage of the investment performance realized on a client’s account. Performance fees are recognized when they (i) become billable to customers (based on contractual terms of agreements) and (ii) are not subject to contingent repayment. The Company is required to capitalize certain costs directly related to the acquisition of a customer or the fulfillment of a contract with a customer. The Company has noted no instances where sales-based compensation or similar costs met the definition of an incremental cost to acquire a contract with a customer. There are no instances where the Company has incurred costs to fulfill a contract with a customer, therefore no assets related to contract acquisition or fulfillment have been recognized. For each revenue contract, the Company assesses each performance obligation and determines if it is the principal in the transaction (where the nature of its promise is to provide a specified good or service itself) or an agent in the transaction (where the nature of its promise is to arrange for a good or service to be provided by another party). In instances where a customer reimburses the Company for a cost paid on the customer’s behalf, if the Company is acting as a principal, the reimbursement is recorded on a gross basis and if the Company is acting as an agent, the reimbursement is recorded on a net basis. Revenue from other sources Revenue from other sources includes interest income on cash and cash equivalents.
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| Compensation arrangements | Compensation arrangements The Company operates a short term variable compensation arrangement where generally, a percentage of Acadian LLC’s annual pre-variable compensation earnings, as defined in the arrangement, is allocated to a “pool” of Acadian LLC’s key employees, and subsequently distributed to individuals subject to recommendation and approval of a remuneration committee comprised of both the Company’s and Acadian LLC’s management. Additionally, a contractual percentage of Acadian LLC performance fee revenues and post-bonus profits are included in a deferred compensation pool. The deferred compensation pool is allocated to Acadian LLC key employees and is subject to a three-year vesting period. Variable compensation expense is accrued and recognized in the Consolidated Statements of Operations as services are provided by individual employees. Variable compensation also includes discretionary annual bonuses, which may be paid in the form of cash or awards of AAMI equity. The Company operates a longer-term profit-interest plan whereby certain Acadian LLC key employees are granted (or have a right to purchase) awards representing a profits interest in Acadian LLC, as distinct from an equity interest due to the lack of pari passu voting rights. Under this plan, the Company may award a portion of the aforementioned variable compensation arrangement through issuance of a profits interest in Acadian LLC. The awards generally have a three-year vesting period from the grant date, and the service period begins at the commencement of the financial period to which the variable compensation relates. Under this plan, Acadian LLC key employees are eligible to share in the profits of Acadian LLC based on their respective percentage interest held. In addition, under certain circumstances, Acadian LLC key employees are eligible to receive repurchase payments upon exiting the plan based on a multiple of the last twelve months’ profits of Acadian LLC, as defined in the arrangement. Profits allocated and movements in the potential repurchase value, determined based on a fixed multiple times trailing twelve-month profits, as defined, are recognized as compensation expense. Profit interests’ compensation liabilities are re-measured at each reporting date at the twelve-month earnings multiple, with movements treated as compensation expense in the Company’s Consolidated Statements of Operations.
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| Share-based compensation plans | Share-based compensation plans The Company recognizes the cost of all share-based payments to directors, senior management, and employees, including grants of restricted stock and stock options, as compensation expense in the Consolidated Statements of Operations over the respective vesting periods. Awards made under the Company’s equity plans are accounted for as equity-settled, and the grant date fair value is recognized as compensation expense over the requisite service period, with a corresponding contribution to additional paid-in capital. Valuation of restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) is determined based on the Company’s closing share price as quoted on the New York Stock Exchange on the measurement date. For awards with a performance vesting condition, compensation expense is adjusted each period to reflect the probability of achievement of the performance condition throughout the vesting period. For market condition awards and stock options, a Monte-Carlo simulation model is used to determine the fair value. Key inputs for the model include assumed reinvestment of dividends, risk-free interest rate, expected volatility, and term. All excess tax benefits and deficiencies on share-based payment awards are recognized as income tax expense or benefit in the Consolidated Statements of Operations. In addition, the tax effects of exercised or vested awards are treated as discrete items in the reporting period in which they occur, and excess tax benefits or deficiencies are classified with other income tax cash flows as an operating activity in the Consolidated Statements of Cash Flows. The Company recognizes forfeitures as they occur. The Company has compensation arrangements with Acadian LLC whereby in exchange for continued service, Acadian LLC equity is either purchased by or granted to Acadian LLC key employees and may be repurchased by the Company at a future date, subject to service requirements having been met. Awards of equity made to Acadian LLC key employees are accounted for as cash settled, with the fair value recognized as compensation expense over the requisite service period, with a corresponding liability carried within other compensation liabilities on the Consolidated Balance Sheets until the award is settled. The fair value of the liability is determined with the assistance of third-party valuation specialists using a discounted cash flow analysis which incorporates assumptions for the forecasted earnings information, growth rates, market risk adjustments, discount rates, when award holders maximize value and post-vesting restrictions. The liability is revalued at each reporting period, with any movements recorded within compensation expense.
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| Principles of Consolidation & Consolidation of Voting Interest Entities | Principles of Consolidation The Consolidated Financial Statements include the operations of the Company, its subsidiaries, and any consolidated Funds. Intercompany balances and transactions among the Company, Acadian LLC, and consolidated Funds are eliminated in consolidation. The Company evaluates entities it is involved with to determine whether it has a controlling financial interest in them and is required to consolidate. Generally, majority-owned entities or otherwise controlled investments in which the Company holds a controlling financial interest as the principal shareholder, managing member, or general partner are consolidated. This assessment is performed at the time the Company becomes involved with an entity and is reassessed at each reporting date or upon the occurrence of certain events (such as contributions and redemptions, either by the Company, Acadian LLC, or third parties, or amendments to the governing documents of the Company’s investees or sponsored Funds). If the Company subsequently determines that it no longer holds a controlling financial interest, the Company will deconsolidate the entity. Consolidation of Voting Interest Entities The Company has a controlling financial interest in a voting interest entity (“VOE”) when it owns a majority of the voting interests through which it can exert control over significant operating, financial, and investing decisions of the entity and no noncontrolling interest holder has stated rights that would overcome the presumption of consolidation by the majority voting interest.
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| Consolidation of Variable Interest Entities | Consolidation of Variable Interest Entities The Company has a controlling financial interest in a variable interest entity (“VIE”) when it is the primary beneficiary of that entity. The primary beneficiary of a VIE is the entity that has (a) the power to direct the activities of a VIE that most significantly affect the entity’s economic performance, and (b) the obligation to absorb losses of the entity or the right to receive benefits from the entity that could potentially be significant to the VIE. An entity is considered a VIE when (i) it lacks the total equity investment at risk sufficient to enable the entity to finance its activities independently, (ii) the equity holders at risk lack the obligation to absorb losses, the right to receive residual returns, or the right to direct the activities of the entity that most significantly impact the entity’s economic performance, or (iii) the entity is structured with disproportionate voting rights, and substantially all of the activities are conducted on behalf of an investor with disproportionately few voting rights. In evaluating whether the Company is the primary beneficiary of an entity, the Company evaluates its economic interests in the entity held either directly by the Company or indirectly through related parties on a proportional basis. Management fees earned from VIEs are not generally considered variable interests if they are deemed to be at market and commensurate with service. If no single party satisfies the primary beneficiary criteria, but the Company and its related parties satisfy the criteria on a combined basis, then the primary beneficiary is the entity out of the related party group that is most closely associated to the VIE. Assessing whether an entity is a VIE involves judgment and analysis. Factors considered in this assessment include the entity’s legal organization, the entity’s capital structure and equity ownership and any related party or de-facto agent implications of the Company’s involvement with the entity. In the normal course of business, Acadian LLC sponsors and manages certain investment vehicles (the “Funds”). The Funds are generally considered VIEs. In most cases, the Company, through Acadian LLC, has the power to direct the activities of the Funds that most significantly affect the Funds’ economic performance. For certain Funds, the Company provides seed capital to establish the Fund. For seeded Funds, the Company assesses whether or not it is the primary beneficiary of the Fund and is therefore required to consolidate the Fund. The consolidation analysis can generally be performed qualitatively, however, if it is not readily apparent that the Company is not the primary beneficiary, a quantitative analysis may also be performed. The Company generally is not the primary beneficiary of Fund VIEs created to manage assets for clients unless the Company’s ownership interest in the fund, including interests of related parties on a proportional basis, is significant. VIEs are subject to specific disclosure requirements.The Company, through Acadian LLC, sponsors the formation of various entities considered to be VIEs. These VIEs are primarily Funds managed by Acadian LLC and other partnership interests typically owned entirely by third-party investors. Certain Funds may be capitalized with seed capital investments from the Company and may be owned partially by Acadian LLC key employees and/or individuals that have ownership interests in Acadian LLC. The Company’s determination of whether it is the primary beneficiary of a Fund that is a VIE is based in part on an assessment of whether or not the Company and its related parties have the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. The Company, through Acadian LLC in its capacity as the investment advisor to the Funds, generally has power over the Funds and therefore the Company may be required to consolidate a Fund that is a VIE if it has potentially significant economics. Typically, the Fund’s investors are entitled to substantially all of the economics of these VIEs with the exception of management fees and performance fees, if any, earned by the Company or any investment the Company has made into the Funds. The Company generally is not the primary beneficiary of Fund VIEs created to manage assets for clients unless the Company’s ownership interest, including interests of related parties, is substantial.“Investments” consist of investments in equity securities, corporate bonds, and derivative securities. To the extent the Company also has consolidated Funds that are not VIEs, the assets and liabilities of those Funds are not included in the table above. The assets of consolidated VIEs presented in the table above belong to the investors in those Funds, are available for use only by the Fund to which they belong, and are not available for use by the Company to the extent they are held by non-controlling interests. Any debt or liabilities held by consolidated Funds have no recourse to the Company’s general credit.
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| Investments and Investment Transactions | Investments and Investment Transactions Valuation of investments held at fair value Valuation of Fund investments is evaluated pursuant to the fair value methodology discussed below. Other investments are categorized as trading and recorded at estimated fair value. Realized and unrealized gains and losses arising from changes in fair value of investments are reported within net consolidated funds’ investment gains and losses in the Consolidated Statements of Operations. See Note 4 for a summary of the inputs utilized to determine the fair value of other investments held at fair value. Security transactions The Company generally records securities transactions on a trade-date basis. Realized gains and losses on securities transactions are generally determined on the average-cost method (net of foreign capital gain taxes) and for certain transactions determined based on the specific identification method. Income and expense recognition The Company records interest income on an accrual basis and includes amortization of premiums and accretion of discounts. Dividend income is recorded on the ex-dividend date, net of applicable withholding taxes. Expenses are recorded on an accrual basis. Short sales Certain Funds may sell a security they do not own in anticipation of a decline in the fair value of that security. When a Fund sells a security short, it must borrow the security sold short and deliver it to the broker-dealer through which it made the short sale. The short sales are secured by the long portfolio and available cash. The dollar value of which is at least equal to the market value of the security at the time of the short sale. The Fund records a gain, limited to the price at which the Fund sold the security short, or a loss, unlimited in size, upon the termination of a short sale. The amount of the gain or loss will be equal to the proceeds received in entering into the short sale less the cost of buying back the short security to close the short position. While the transaction is open, the Fund will incur an expense for any accrued dividends or interest which is paid to the lender of the securities. These short sales may involve a level of risk in excess of the liability recognized in the accompanying Consolidated Balance Sheets. The extent of such risk cannot be quantified. Funds’ Derivatives Certain Funds may use derivative instruments. The Funds’ derivative instruments may include (but are not limited to) foreign currency exchange contracts, credit default swaps, equity swaps, interest rate swaps, financial futures contracts, and warrants. The fair values of derivative instruments are recorded as other assets of consolidated Funds or other liabilities of consolidated Funds on the Company’s Consolidated Balance Sheets. Certain of the Funds have historically used foreign exchange forwards to hedge the risk of movement in exchange rates on financial assets on a limited basis. The Company’s Funds have not designated any financial instruments for hedge accounting, as defined in the accounting literature, during the periods presented. The gains or losses on a Fund’s derivative instruments not designated for hedge accounting are included as net consolidated Funds gains or losses in the Company’s Consolidated Statements of Operations.
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| Foreign currency translation and transactions | Foreign currency translation and transactions Assets and liabilities of non-U.S. consolidated entities for which the local currency is the functional currency are translated at current exchange rates as of the end of the accounting period. The related revenues and expenses are translated at average exchange rates in effect during the period. Net exchange gains and losses resulting from translation are excluded from income and are recorded as part of accumulated other comprehensive income (loss). Transactions denominated in a foreign currency are remeasured at the current exchange rate at the transaction date and any related gains and losses are recognized in earnings.
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| Fair value measurements | Fair value measurements Fair value is defined as the price that the Company expects to be paid upon the sale of an asset or expects to pay upon the transfer of a liability in an orderly transaction between market participants. There is a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from independent sources. Unobservable inputs reflect the Company’s own conclusions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. Assets and liabilities measured and reported at fair value are classified and disclosed in one of the following categories: •Level I—Quoted prices are available in active markets for identical investments as of the reporting date. The type of investments included in Level I include listed equities and listed derivatives. As required by U.S. GAAP, the Company does not adjust the quoted price for these investments. •Level II—Pricing inputs are other than quoted prices in active markets, which are either directly or indirectly observable as of the reporting date, and fair value is determined through the use of models or other valuation methodologies utilizing observable market inputs other than quoted prices. Investments which are generally included in this category include corporate bonds, less liquid and restricted equity securities, and certain over-the-counter derivatives. •Level III—Pricing inputs are unobservable for the asset or liability and include assets and liabilities where there is little, if any, market activity for the investment. The inputs into the determination of fair value require significant management judgment or estimation. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the investment. In cases in which the fair value of an investment is established using the net asset value (or its equivalent) as a practical expedient, the investment is not categorized within the fair value hierarchy.
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| Use of estimates | Use of estimates The preparation of these Consolidated Financial Statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the period. Assumptions used in management’s estimates are based on historical experience and other factors, and these assumptions require management to exercise judgment in the process of applying the Company’s accounting policies. Factors that may impact management’s estimates include expectations related to future events that management considers reasonable under the facts and circumstances. Actual results could differ from such estimates, and the differences may be material to the Consolidated Financial Statements.
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| Operating segment | Operating segment The Company currently operates one reportable segment, Quant & Solutions, related to investment management services and products primarily to institutional clients.
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| Derivatives and Hedging | Derivatives and Hedging The Company may utilize derivative financial instruments to hedge the risk of movement of interest rates and foreign currency on financial assets and liabilities. These derivative financial instruments may or may not qualify as hedges for accounting purposes. The Company records all derivative financial instruments as either assets or liabilities on its Consolidated Balance Sheets and measures these instruments at fair value. For a derivative financial instrument that qualifies as a hedge for accounting purposes and is designated as a hedging instrument, the effective portion of the derivative’s gain or loss is initially reported as a component of other comprehensive income (loss) and subsequently reclassified into earnings over the life of the hedge. The ineffective portion of the gain or loss is recognized in earnings immediately.
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| Cash and cash equivalents | Cash and cash equivalents The Company considers all highly liquid investments, including money market mutual funds with original maturities of three months or less, to be cash equivalents. Cash equivalents are stated at cost, which approximates market value due to the short-term maturity of these investments. Cash held by consolidated Funds is not available to fund general liquidity needs of the Company and is therefore classified as restricted cash.
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| Investment advisory fees receivable | Investment advisory fees receivable The Company earns management and performance fees which are billed monthly, quarterly, or annually, according to the terms of the relevant investment management agreement. Management and performance fees that have been earned but have not yet been collected are presented as investment advisory fees receivable on the Consolidated Balance Sheets. Due to the short-term nature and liquidity of these receivables, the carrying amounts approximate their fair values. The Company typically does not record an allowance for doubtful accounts or bad debt expense, or any amounts recorded have been immaterial.
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| Fixed assets | Fixed assets Fixed assets are recorded at historical cost and depreciated using the straight-line method over their estimated useful lives. The estimated useful lives of office equipment and furniture and fixtures range from to ten years. Leasehold improvements are amortized over the shorter of their estimated useful lives or the remaining term of the lease. Computer software developed or obtained for internal use capitalized during the application development stage is amortized using the straight-line method over the estimated useful life of the software, which is generally five years or less. The costs of improvements that extend the life of a fixed asset are capitalized, while the costs of repairs and maintenance are expensed as incurred.
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| Goodwill | Goodwill The Company records goodwill when the consideration transferred in a business combination exceeds the fair value of the identifiable net assets obtained. Goodwill is not amortized but rather is assessed for impairment at least annually using a qualitative and, if necessary, a quantitative approach. The Company performs its assessment for impairment of goodwill annually as of the first business day of the fourth quarter, or more frequently if then current facts and circumstances indicate an impairment may exist. Factors that could indicate an impairment include significant underperformance relative to historical or projected future operating results, significant changes in the Company’s use of the acquired assets in a business combination or the strategy for the Company’s overall business, and significant negative industry or economic trends. Goodwill is tested for impairment at the reporting unit level. The Company has one reporting unit, consisting of Acadian LLC, as of the annual goodwill impairment test date. The Company first considers various qualitative factors to determine if it is more likely than not that the fair value of the reporting unit is greater than its respective carrying amount, including goodwill. If, based on the qualitative assessment, it is determined that it is more likely than not that the fair value of the reporting unit is less than its respective carrying amount, therefore indicating that impairment may exist, the impact would be determined at that point through a quantitative assessment. For purposes of assessing potential impairment, the fair value of the reporting unit is estimated and compared to the carrying value of the reporting unit. The fair value of a reporting unit is based on discounted estimated future cash flows. The assumptions used to estimate fair value include management’s estimates of future growth rates, operating cash flows, discount rates, and terminal value. These assumptions and estimates can change in future periods based on market movement and factors impacting the expected business performance. Changes in assumptions or estimates could materially affect the determination of the fair value of the reporting unit. If it is determined that the carrying value of the reporting unit exceeds its fair value, the Company will recognize an impairment charge for the excess; not to exceed the total amount of goodwill allocated to that reporting unit. Based on the Company’s most recent annual goodwill impairment test, the Company concluded that the fair value of its reporting unit was more likely than not in excess of their carrying value. At the close of each year, management assessed whether there were any conditions present during the fourth quarter that would indicate impairment subsequent to the initial assessment date and concluded that no such conditions were present.
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| Leases | Leases Contracts are evaluated at inception to determine whether such contract is or contains a lease. A lease is a contract that provides the right to control an identified asset for a period of time in exchange for consideration. For identified leases, the Company determines the classification as either an operating or finance lease. The Company currently leases certain office space and equipment which are classified as operating leases. Certain leases include lease and non-lease components, which the Company generally accounts for as a single component for all classes of assets. The Company’s lease agreements may contain renewal options and early termination clauses exercisable by the Company, rent escalation clauses, and/or other incentives provided by the landlord. Renewal options and early termination clauses that have been determined to be reasonably certain to be exercised are factored into the lease term. Rights and obligations attributable to identified leases with a term in excess of twelve months are recognized on the Company’s Consolidated Balance Sheets in the form of right‐of‐use (ROU) assets and operating lease liabilities. These balances are recognized when the underlying assets are made available for use by the lessor, which may be the date the Company gains access to begin leasehold improvements. Lease payments related to short‐term leases with a term of twelve months or less are not capitalized and rather are recognized as short‐term lease expense. Operating lease liabilities are initially and subsequently measured at the present value of future unpaid lease payments over the remaining lease term. For the purposes of this calculation, lease payments generally consist of fixed monthly lease payments related to use of the underlying assets. The Company uses its incremental borrowing rate to determine the present value of future unpaid lease payments based on information available at the lease commencement date. ROU assets are initially valued equal to the corresponding lease liabilities, adjusted for any lease incentives payable to the Company. Subsequently, the amortization of ROU assets is recognized as a component of operating lease expense. The total cost of operating leases is recognized on a straight‐line basis over the lease term and is composed of imputed interest on lease liabilities measured using the effective interest method and amortization of the ROU asset. Variable lease payments are primarily related to services such as common‐area maintenance, utilities, property taxes, and insurance, and are recognized as variable lease expense when incurred. ROU assets are tested for impairment whenever changes in facts or circumstances indicate that the carrying amount of an asset may not be recoverable. When the terms of a lease agreement are changed, management assesses the contract for a lease modification. Modifications of a lease generally result in remeasurement of the lease liability and the ROU asset.
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| Earnings per share | Earnings per share The Company calculates basic and diluted earnings per share (“EPS”) by dividing net income by its shares outstanding as outlined below. Basic EPS attributable to the Company’s stockholders is calculated by dividing “Net income attributable to controlling interests” by the weighted-average number of shares outstanding. Diluted EPS is similar to basic EPS, but adjusts for the effect of potential shares of common stock unless they are antidilutive. For periods with a net loss, potential shares of common stock are considered antidilutive. The Company considers two ways to measure dilution to earnings per share: (a) calculate the net number of shares that would be issued assuming any related proceeds are used to buy back outstanding shares (the treasury stock method), or (b) assume the gross number of shares are issued and calculate any related effects on net income available for stockholders (the if-converted or two-class method). As appropriate, the Company’s policy is to apply the more dilutive methodology upon issuance of such instruments.
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| Deferred financing costs | Deferred financing costs The Company records debt issuance costs of term loans as a direct deduction from the carrying amount of the associated debt liability. The Company records debt issuance costs of line-of-credit and revolving-debt arrangements as an asset and subsequently amortizes the deferred costs ratably over the term of the arrangements.
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| Income taxes | Income taxes Deferred income taxes are recognized for the effects of temporary differences between the tax basis of an asset or liability and its reported amount in the Consolidated Financial Statements. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. Deferred income tax assets are subject to a valuation allowance if, in management’s opinion, it is not more-likely-than-not that these benefits will be realized. In evaluating the Company’s ability to recover its deferred tax assets, the Company considers all available positive and negative evidence including its past operating results, the existence of cumulative earnings or losses in the most recent years and its forecast of future taxable income. In estimating future taxable income, the Company develops assumptions including the amount of future pre-tax operating income and the reversal of temporary differences. These assumptions require significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates the Company is using to manage the underlying businesses. The Company’s accounting policy is to treat the global intangible low-taxed income taxes as period costs in the accounting and tax periods in which they are incurred. A tax benefit should only be recognized if it is more-likely-than-not that the position will be sustained based on its technical merits. The Company recognizes the financial statement benefit of a tax position only after considering the probability that a tax authority would uphold the position in an examination. For tax positions meeting a “more-likely-than-not” threshold, the amount recognized in the financial statements is the largest cumulative amount of benefit greater than 50% likely of being sustained. The more-likely-than-not threshold must continue to be met in each reporting period to support continued recognition of the benefit. Unrecognized tax benefits and related interest and penalties are adjusted periodically to reflect changing facts and circumstances. The Company’s accounting policy is to classify interest and related charges as a component of income tax expense.
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| Non-controlling interests | Non-controlling interests For certain entities that are consolidated, but not 100% owned, the Company reports non-controlling interests as equity on its Consolidated Balance Sheets. The Company's consolidated net income on the Consolidated Statements of Operations includes the income (loss) attributable to non-controlling interest holders of Funds. Ownership interests held by Acadian LLC key employees are categorized as liabilities on the Consolidated Balance Sheets and are revalued each reporting date, with movements treated as compensation expense in the Consolidated Statements of Operations. Non-controlling interests in consolidated Funds on the Consolidated Balance Sheets include undistributed income owned by the investors in the respective Funds. The Company’s consolidated net income on the Consolidated Statements of Operations includes the income (loss) attributable to non-controlling interest holders of these consolidated entities.
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| Redeemable non-controlling interests | Redeemable non-controlling interests The Company includes redeemable non-controlling interests related to certain consolidated Funds as temporary equity on the Consolidated Balance Sheets. Non-controlling interests in certain consolidated Funds are subject to monthly or quarterly redemption by the investors. When redeemable amounts become legally payable to investors, they are classified as a liability and included in total liabilities of consolidated Funds on the Consolidated Balance Sheets.
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| Other comprehensive income (loss) | Other comprehensive income (loss) Other comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances, excluding those resulting from investments by and distributions to owners. For the Company’s purposes, comprehensive income (loss) represents net income (loss), as presented in the accompanying Consolidated Statements of Operations, adjusted for foreign currency translation adjustments, net of tax and adjustments to the valuation and amortization of certain derivative securities, net of tax.
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| Recently adopted accounting standards & New accounting standards not yet adopted | Recently adopted accounting standards In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures. This amendment requires annual and interim disclosures of significant segment expenses that are regularly provided to the chief operating decision maker by reportable segment and clarifies that single reportable segment entities are required to apply all existing segment disclosures in the guidance. This amendment is effective for annual periods beginning after December 15, 2023, and for interim periods beginning after December 15, 2024. The Company adopted the updated guidance for the annual reporting period beginning January 1, 2024, which did not result in a material impact to our Consolidated Financial Statements. Refer to Note 21 for related disclosures about our reportable operating segment. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures, which requires public entities, on an annual basis, to provide disclosure of specific categories in the rate reconciliation, as well as disclosure of income taxes paid disaggregated by jurisdiction. This amendment is effective for annual periods beginning after December 15, 2024. The Company adopted the updated guidance for the annual reporting period beginning January 1, 2025, which did not result in a material impact to our Consolidated Financial Statements and related disclosures. In March 2024, the FASB issued ASU 2024-01, Compensation - Stock Compensation (Topic 718): Scope Application of Profits Interest and Similar Awards. This standard provides clarity regarding whether profits interest and similar awards are within the scope of Topic 718 of the Accounting Standards Codification. This amendment is effective for annual periods beginning after December 15, 2024, and interim periods within those annual periods. Early adoption is permitted. The Company adopted the updated guidance for the annual reporting period beginning January 1, 2025, which did not result in a material impact to our Consolidated Financial Statements and related disclosures. New accounting standards not yet adopted In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-4): Disaggregation of Income Statement Expenses, which requires disclosures of additional information and disaggregation of certain expenses included in the income statement. This amendment is for annual periods beginning after December 15, 2026, and interim periods beginning after December 15, 2027. The Company is evaluating the impact that the adoption will have on the Consolidated Financial Statements and have not yet determined the transition approach. In September 2025, the FASB issued ASU 2025-06, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software, which clarifies and modernizes the accounting for internal-use software costs. This amendment is for annual periods beginning after December 15, 2027, and interim periods within those annual periods. The Company is evaluating the impact that the adoption will have on the Consolidated Financial Statements. In November 2025, the FASB issued ASU 2025-09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements to the Accounting for derivatives and hedging, which aims to more closely align hedge accounting with the economics of an entity’s risk management activities. This amendment is for annual periods beginning after December 15, 2026, and interim periods within those annual periods. The Company does not expect the additional disclosure requirements under ASU 2025-09 to have a material impact on the Consolidated Financial statements. The Company has considered all other newly issued accounting guidance that is applicable to the Company’s operations and the preparation of the Consolidated Financial Statements, including those that have not yet been adopted. The Company does not believe that any such guidance has or will have a material effect on its Consolidated Financial Statements and related disclosures.
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Investments (Tables) |
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| Schedule of Investment Components | Investments are comprised of the following at December 31 (in millions):
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Fair Value Measurements (Tables) |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of the Assets and Liabilities that are Measured at Fair Value on a Recurring Basis | The following table summarizes the Company’s assets and liabilities that are measured at fair value on a recurring basis at December 31, 2025 (in millions):
The following table summarizes the Company’s assets and liabilities that are measured at fair value on a recurring basis at December 31, 2024 (in millions):
(1)Assets and liabilities measured at fair value are comprised of financial investments managed by Acadian LLC. Equity securities and derivatives which are traded on a national securities exchange are stated at the last reported sales price on the day of valuation. To the extent these securities are actively traded and valuation adjustments are not applied, they are classified as Level I. The securities that trade in markets that are not considered to be active but are valued based on quoted market prices, dealer quotations or alternative pricing sources supported by observable inputs obtained by the Company from independent pricing services are classified as Level II. The Company obtains prices from independent pricing services that may utilize broker quotes, but generally the independent pricing services will use various other pricing techniques which take into account appropriate factors such as yield, quality, coupon rate, maturity, type of issue, trading characteristics and other data. The Company has not made adjustments to the prices provided. Assets of consolidated Funds also include investments in Corporate bonds. If the pricing services are only able to (a) obtain a single broker quote or (b) utilize a pricing model with unobservable inputs, such securities are classified as Level III. If the pricing services are unable to provide prices, the Company attempts to obtain one or more broker quotes directly from a dealer or values such securities at the last bid price obtained. In either case, such securities are classified as Level III. The Company performs due diligence procedures over third party pricing vendors to understand their methodology and controls to support their use in the valuation process to ensure compliance with required accounting disclosures. (2)Investments related to long-term incentive compensation plans of $37.9 million and $48.5 million at December 31, 2025 and December 31, 2024, respectively, were investments in publicly registered daily redeemable funds (some managed by Acadian LLC), which the Company has classified as trading securities and valued using the published price as of the measurement dates. Accordingly, the Company has classified these investments as Level I. (3)The uncategorized amounts of $13.3 million and $19.4 million at December 31, 2025 and December 31, 2024, respectively, relate to investments in unconsolidated Funds which consist primarily of investments in Funds and are valued using NAV which the Company relies on to determine their fair value as a practical expedient and has therefore not classified these investments in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to amounts presented in the Consolidated Balance Sheets. These unconsolidated Funds consist primarily of real estate investment Funds and other investment vehicles. The NAVs that have been provided by investees have been derived from the fair values of the underlying investments as of the measurement dates. Other investment vehicles are not subject to redemption restrictions. The real estate investment Funds of $3.1 million and $2.9 million at December 31, 2025 and December 31, 2024, respectively, were subject to longer than monthly or quarterly redemption restrictions, and due to their nature, distributions are received only as cash flows are generated from underlying assets over the life of the Funds. The range of time over which the underlying assets are expected to be liquidated by the investees is approximately one year from December 31, 2025. The valuation process for the underlying real estate investments held by the real estate investment Funds begins with each property or loan being valued by the investment teams. The valuations are then reviewed and approved by the valuation committee, which consists of senior members of the portfolio management, finance, and research teams. For certain properties and loans, the valuation process may also include a valuation by independent appraisers. In connection with this process, changes in fair value measurements from period to period are evaluated for reasonableness, considering items such as market rents, capitalization and discount rates, and general economic and market conditions.
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Variable Interest Entities (Tables) |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Assets and Liabilities and Information Pertains to VIEs | The following table presents the assets and liabilities of Funds that are VIEs consolidated by the Company (in millions):
The following information pertains to unconsolidated VIEs for which the Company holds a variable interest at December 31 (in millions):
(1)Includes the carrying value of investments the Company has made in the unconsolidated VIEs in which the Company is not the primary beneficiary.
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Fixed Assets (Tables) |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Property, Plant and Equipment [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Components of Fixed Assets | The Company’s fixed assets, which are primarily located in the U.S., consisted of the following at December 31 (in millions):
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Leases (Tables) |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Leases [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Lease Information | The following table summarizes information about the Company’s operating leases for the years ended December 31 (in millions):
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| Schedule of Maturities of Operating Lease Liabilities | Maturities of operating lease liabilities were as follows (in millions):
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Goodwill (Tables) |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Intangible Assets Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Changes in Goodwill | The following table presents the changes in goodwill in 2025 and 2024 (in millions):
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Related Party Transactions (Tables) |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Related Party Transactions [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Related Party Transactions | Amounts due for investment advisory fee receivables from related parties were comprised of the following at December 31 (in millions):
Related party transactions included in the Company’s Consolidated Statements of Operations for the years ended December 31 consisted of (in millions):
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Accounts Payable and Accrued Expenses (Tables) |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accounts Payable and Accrued Liabilities [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Accounts Payable and Accrued Expenses | Accounts payable and accrued expenses consisted of the following at December 31 (in millions):
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Other Compensation Liabilities (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share-Based Payment Arrangement [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Components of Other Compensation Liabilities | Other compensation liabilities consisted of the following at December 31 (in millions):
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Borrowings and Debt (Tables) |
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Long Term Debt | The Company’s borrowings and long-term debt were comprised of the following as of the dates indicated (in millions):
(1)Fair value approximates carrying value because the credit facility and the delayed draw term loan have variable interest rates based on selected short term market rates. (2)On October 28, 2025, Acadian LLC’s $140 million revolving credit facility (the “Prior LLC Credit Agreement”) was terminated and replaced with a new $175 million revolving credit facility. The weighted average interest rate for the Prior LLC Credit Agreement was 5.93%, 6.93% and 6.19% in 2025, 2024 and 2023, respectively. (3)The difference between the principal amounts and the carrying values of the senior notes in the table above reflects the unamortized debt issuance costs and discounts. (4)On December 1, 2025, the Company completed the full redemption of the $275 million aggregate principal amount outstanding of its 4.80% Senior Notes due July 27, 2026. As a result of this transaction, the Company recorded a $1.4 million loss on extinguishment of debt within the Consolidated Statement of Operations for the year ended December 31, 2025.
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| Schedule of Aggregate Maturities of Debt Commitments | As of December 31, 2025, the aggregate maturities of debt commitments, based on their contractual terms, are as follows:
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Income Taxes (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Tax Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Income Before Income Tax | Income before income taxes consisted of the following for the years ended December 31 (in millions):
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| Schedule of Components of Income Tax Expense (Benefit) from Continuing Operations | The components of income tax expense for the years ended December 31 are as follows (in millions):
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| Schedule of Cash Flow, Supplemental Disclosures | The income tax paid, net of refunds, by the Company for the years ended December 31 are as follows (in millions):
Income taxes paid, net of refunds, exceed five percent of total income taxes paid (net) in the following jurisdictions (in millions):
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| Schedule of Reconciliation of Statutory and Effective Income Tax Rates for Continuing Operations | The differences between income taxes expected at the U.S. federal statutory income tax rate and income taxes reported for the years ended December 31 are as follows (in millions):
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| Significant Components of Deferred Tax Assets and Deferred Tax Liabilities | The significant components of deferred tax assets and deferred tax liabilities for the years ended December 31 are as follows (in millions):
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| Schedule of Reconciliation of Change in Gross Unrecognized Tax Benefits | A reconciliation of the change in gross unrecognized tax benefits for the years ended December 31 is as follows (in millions):
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Earnings Per Share (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Calculation of Basic and Diluted Earnings Per Share | The calculation of basic and diluted earnings per share of common stock for the years ended December 31, 2025, 2024 and 2023 is as follows (dollars in millions, except per share data):
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Revenue (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Revenue from Contract with Customer [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Disaggregation of Revenue | The geographic disaggregation of management fee revenue by location of client domicile for the years ended December 31 (in millions) is presented below:
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Equity-based Compensation (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Share-Based Payment Arrangement [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Share-based Payments Liability | The following table presents the changes in the share-based payments liability for the years ended December 31 (in millions):
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| Schedule of Activity of Share-based Compensation | The following table summarizes the activity related to restricted stock units:
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Accumulated Other Comprehensive Income (Loss) (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Components of Accumulated Other Comprehensive Income (loss) | The components of accumulated other comprehensive income (loss), net of tax, for the years ended December 31, 2025, 2024 and 2023 were as follows (in millions):
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Segment Information (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2025 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Reconciling Adjustments | The following table sets forth summarized operating results for the Company’s segment and related adjustments necessary to reconcile the segment economic net income to arrive at the Company’s consolidated U.S. GAAP net income attributable to controlling interests for the years ended December 31 (in millions):
Reconciling Adjustments: (a)Adjustment to exclude consolidated Funds revenues, which are included in U.S. GAAP revenue. (b)Fixed compensation and benefits includes base salaries, payroll taxes and the cost of benefit programs provided. (c)Variable compensation is contractually set and calculated individually for Acadian LLC bonuses. Amounts are adjusted for non-cash Acadian LLC key employee equity revaluations and severance relating to restructuring costs. (d)Acadian LLC key employee distributions includes the share of Acadian LLC profits after variable compensation that is attributable to the Acadian LLC key employee equity and profits interests holders, according to their ownership interests. (e)Depreciation and amortization includes U.S. GAAP depreciation and amortization, adjusted for costs associated with the wind-down of the MACS business in the standalone format. (f)Other segment items includes segment systems, portfolio administration costs and other general & administrative expenses adjusted to exclude restructuring costs. (g)Included in unallocated corporate expenses for the years ended December 31, 2025, 2024 and 2023 was compensation and benefits of $10.9 million, $10.0 million, and $9.2 million, respectively, related to Hold Co which are included in U.S. GAAP net income attributable to controlling interests. Included in unallocated corporate expenses for the years ended December 31, 2025, 2024 and 2023 was general and administrative expenses of $7.4 million, $9.4 million, and $9.9 million, respectively, related to Hold Co which are included in U.S. GAAP net income attributable to controlling interests. (h)Adjustments and reconciling items includes consolidated Funds revenue, consolidated Fund expense, and restructuring costs. (i)Non-cash Acadian LLC key employee equity revaluations represent changes in the value of Acadian LLC equity and profit interests held by Acadian LLC key employees, which are included within the U.S. GAAP compensation and benefits expense.
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Basis of Presentation and Significant Accounting Policies (Details) |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2025
USD ($)
reporting_unit
segment
|
Dec. 31, 2024
USD ($)
|
|
| Property and equipment | ||
| Contract assets recognized | $ | $ 0 | $ 0 |
| Vesting period | 3 years | |
| Vesting period of long term profit-interest plan | 3 years | |
| Period of earnings on which multiple for redemption of long term profit-interest compensation awards is based | 12 months | |
| Number of reportable segments | segment | 1 | |
| Number of reporting units | reporting_unit | 1 | |
| Office Equipment and Furniture and Fixtures | Minimum | ||
| Property and equipment | ||
| Property and equipment useful life | 3 years | |
| Office Equipment and Furniture and Fixtures | Maximum | ||
| Property and equipment | ||
| Property and equipment useful life | 10 years | |
| Software and web development | Maximum | ||
| Property and equipment | ||
| Property and equipment useful life | 5 years |
Investments (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Summary of Investment Holdings [Line Items] | ||
| Total investments per Consolidated Balance Sheets | $ 141.6 | $ 221.9 |
| Consolidated Funds | ||
| Summary of Investment Holdings [Line Items] | ||
| Investments | 90.4 | 154.0 |
| Total investments per Consolidated Balance Sheets | 90.4 | 154.0 |
| Consolidated Entity Excluding Consolidated Funds | ||
| Summary of Investment Holdings [Line Items] | ||
| Investments | 13.3 | 19.4 |
| Total investments per Consolidated Balance Sheets | 51.2 | 67.9 |
| Consolidated Entity Excluding Consolidated Funds | Other investments | ||
| Summary of Investment Holdings [Line Items] | ||
| Investments | 13.3 | 19.4 |
| Consolidated Entity Excluding Consolidated Funds | Investments related to long-term incentive compensation plans | ||
| Summary of Investment Holdings [Line Items] | ||
| Investments | $ 37.9 | $ 48.5 |
Variable Interest Entities - Schedule of Assets and Liabilities that are VIEs (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Assets | ||
| Total assets | $ 677.0 | $ 703.2 |
| Liabilities | ||
| Total liabilities | 593.0 | 616.1 |
| Variable Interest Entity, Primary Beneficiary | ||
| Assets | ||
| Cash and cash equivalents | 23.2 | 3.7 |
| Other assets of consolidated Funds | 24.9 | 1.6 |
| Total assets | 138.5 | 159.3 |
| Liabilities | ||
| Securities sold short | 7.8 | 20.4 |
| Total liabilities | 31.1 | 21.2 |
| Variable Interest Entity, Primary Beneficiary | ||
| Assets | ||
| Investments | 90.4 | 154.0 |
| Liabilities | ||
| Other liabilities of consolidated Funds | $ 23.3 | $ 0.8 |
Variable Interest Entities - Schedule of Information of Variable Interest Holdings (Details) - Unconsolidated VIEs - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Variable Interest Entities | ||
| Equity interests on the Consolidated Balance Sheets | $ 13.3 | $ 2.9 |
| Maximum risk of loss | $ 13.3 | $ 2.9 |
Fixed Assets - Schedule of Components of Fixed Assets (Details) - Consolidated Entity Excluding Consolidated Funds - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Fixed assets, at cost | $ 162.3 | $ 154.6 |
| Accumulated depreciation and amortization | (131.3) | (118.9) |
| Fixed assets, net | 31.0 | 35.7 |
| Leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Fixed assets, at cost | 28.8 | 28.5 |
| Office equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Fixed assets, at cost | 9.3 | 8.7 |
| Furniture and fixtures | ||
| Property, Plant and Equipment [Line Items] | ||
| Fixed assets, at cost | 6.4 | 6.3 |
| Software and web development | ||
| Property, Plant and Equipment [Line Items] | ||
| Fixed assets, at cost | $ 117.8 | $ 111.1 |
Fixed Assets - Narrative (Details) - Consolidated Entity Excluding Consolidated Funds - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Property, Plant and Equipment [Line Items] | |||
| Depreciation and amortization expense | $ 16,600,000 | $ 18,500,000 | $ 17,300,000 |
| Fixed asset disposals | 4,400,000 | 19,000,000.0 | |
| Accumulated depreciation | (4,400,000) | (19,000,000.0) | |
| Gain (loss) on disposition of property plant equipment | $ 0 | $ 0 | |
Leases - Narrative (Details) |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Lessee, Lease, Description [Line Items] | ||
| Lease renewal term | 5 years | |
| Weighted average remaining lease term | 7 years 7 months 6 days | 8 years 6 months |
| Weighted average discount rate | 3.55% | 3.55% |
| Minimum | ||
| Lessee, Lease, Description [Line Items] | ||
| Remaining lease terms | 1 year | |
| Maximum | ||
| Lessee, Lease, Description [Line Items] | ||
| Remaining lease terms | 8 years |
Leases - Schedule of Information about Operating Leases (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Leases [Abstract] | |||
| Operating lease cost | $ 8.6 | $ 8.7 | $ 8.6 |
| Variable lease cost | 0.1 | 0.1 | 0.1 |
| Total operating lease expense | 8.7 | 8.8 | 8.7 |
| Cash paid for amounts included in the measurement of lease liabilities: | |||
| Operating cash flows from operating leases | 9.7 | 9.0 | 9.3 |
| Right of use assets obtained in exchange for new operating lease liabilities | $ 1.4 | $ 2.1 | $ 3.4 |
Leases - Schedule of Maturities of Operating Lease Liabilities (Details) $ in Millions |
Dec. 31, 2025
USD ($)
|
|---|---|
| Leases [Abstract] | |
| 2026 | $ 9.7 |
| 2027 | 9.3 |
| 2028 | 9.0 |
| 2029 | 8.2 |
| 2030 | 8.3 |
| Thereafter | 25.3 |
| Total lease payments | 69.8 |
| Less imputed interest | (8.4) |
| Total | $ 61.4 |
Goodwill (Details) - Quant & Solutions - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Goodwill [Roll Forward] | ||
| Goodwill gross, beginning balance | $ 22.1 | $ 22.1 |
| Accumulated impairment, beginning balance | (1.8) | (1.8) |
| Goodwill, beginning balance | 20.3 | 20.3 |
| Additions | 0.0 | 0.0 |
| Impairments | 0.0 | 0.0 |
| Goodwill gross, ending balance | 22.1 | 22.1 |
| Accumulated impairment, ending balance | (1.8) | (1.8) |
| Goodwill, ending balance | $ 20.3 | $ 20.3 |
Related Party Transactions (Details) - Related Party - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Related party transactions | |||
| Total related party revenues | $ 162.0 | $ 129.2 | $ 87.5 |
| Investment advisory fee | |||
| Related party transactions | |||
| Total amounts due for investment advisory fee receivables from related parties | 60.5 | 42.7 | |
| Investment advisory fee | Consolidated Entity Excluding Consolidated Funds | |||
| Related party transactions | |||
| Total amounts due for investment advisory fee receivables from related parties | 60.5 | 42.7 | |
| Management fees from unconsolidated Funds | Consolidated Entity Excluding Consolidated Funds | |||
| Related party transactions | |||
| Total related party revenues | 147.8 | 119.9 | 86.5 |
| Performance fees from unconsolidated Funds | Consolidated Entity Excluding Consolidated Funds | |||
| Related party transactions | |||
| Total related party revenues | $ 14.2 | $ 9.3 | $ 1.0 |
Accounts Payable and Accrued Expenses (Details) - Consolidated Entity Excluding Consolidated Funds - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Accounts Payable And Accrued Expenses [Line Items] | ||
| Accounts payable | $ 6.8 | $ 6.7 |
| Accrued expenses | 30.6 | 25.6 |
| Accrued interest payable | 0.2 | 5.6 |
| Total accounts payable and accrued expenses | $ 37.6 | $ 37.9 |
Other Compensation Liabilities - Schedule of Components of Other Compensation Liabilities (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Share-Based Payment Arrangement [Abstract] | ||
| Share-based payments liability (Note 18) | $ 37.0 | $ 25.4 |
| Profit interests compensation liability | 54.0 | 18.7 |
| Voluntary deferral plan liability (Note 17) | 37.9 | 48.4 |
| Total other compensation liabilities | $ 128.9 | $ 92.5 |
Other Compensation Liabilities - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Share-Based Payment Arrangement [Abstract] | |||
| Profit interests compensation expense | $ 38.0 | $ 19.0 | $ 0.0 |
| Redemption of profit sharing interests for cash | $ 2.7 | $ 0.3 | $ 0.0 |
Borrowings and Debt - Schedule of Aggregate Maturities of Debt Commitments (Details) $ in Millions |
Dec. 31, 2025
USD ($)
|
|---|---|
| Debt Disclosure [Abstract] | |
| 2026 | $ 0.0 |
| 2027 | 0.0 |
| 2028 | 200.0 |
| 2029 | 0.0 |
| 2030 | 0.0 |
| Thereafter | 0.0 |
| Total | $ 200.0 |
Income Taxes - Schedule of Income before Income Tax (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Income Tax Disclosure [Abstract] | |||
| Domestic | $ 132.1 | $ 118.1 | $ 90.1 |
| Foreign | 11.1 | 7.6 | 6.4 |
| Income before income taxes | $ 143.2 | $ 125.7 | $ 96.5 |
Income Taxes - Schedule of Components of Income Tax Expense (Benefit) from Continuing Operations (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Current: | |||
| Federal | $ 22.1 | $ 32.0 | $ 22.6 |
| State | 10.2 | 14.7 | 11.2 |
| Foreign | 2.8 | 2.4 | 1.6 |
| Total current expense (benefit) | 35.1 | 49.1 | 35.4 |
| Deferred: | |||
| Federal | 2.0 | (9.9) | (6.3) |
| State | (0.5) | 0.0 | 0.5 |
| Foreign | 0.0 | (0.3) | (0.2) |
| Total deferred expense (benefit) | 1.5 | (10.2) | (6.0) |
| Total tax expense (benefit) | $ 36.6 | $ 38.9 | $ 29.4 |
Income Taxes - Narrative (Details) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2025
USD ($)
jurisdiction
|
Dec. 31, 2024
USD ($)
|
Dec. 31, 2023
USD ($)
|
|
| Income Tax Disclosure [Abstract] | |||
| Income tax expense (benefit) recognized related to derivative securities within other comprehensive income | $ 0.6 | $ (0.8) | $ (0.9) |
| Liability for unrecognized tax benefits that would affect the effective tax rate if recognized | 0.9 | 1.0 | |
| Interest and penalties related to income tax provision (credit) | 0.0 | 0.1 | $ 0.1 |
| Accrued interest and penalties relating to unrecognized tax benefits | $ 0.2 | $ 0.2 | |
| Number of jurisdictions | jurisdiction | 2 | ||
Income Taxes - Schedule of Income Taxes Paid (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Effective Income Tax Rate Reconciliation [Line Items] | |||
| Federal | $ 22.1 | $ 32.0 | $ 25.9 |
| State | 9.1 | 14.5 | 12.3 |
| Foreign | 3.0 | 2.0 | (0.4) |
| Total | 34.2 | 48.5 | 37.8 |
| Massachusetts | |||
| Effective Income Tax Rate Reconciliation [Line Items] | |||
| State | $ 5.0 | $ 9.1 | $ 7.4 |
Income Taxes - Schedule of Significant Components of Deferred Tax Assets and Liabilities and Additional Information (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Deferred tax assets: | ||
| Investment in partnerships | $ 74.1 | $ 73.4 |
| Employee compensation | 1.2 | 1.3 |
| Other | 3.0 | 2.6 |
| Cash flow hedge | 0.0 | 1.6 |
| Total deferred tax assets | 78.3 | 78.9 |
| Valuation allowance | 0.0 | 0.0 |
| Deferred tax assets, net of valuation allowance | 78.3 | 78.9 |
| Deferred tax liabilities: | ||
| Other | 0.8 | 0.6 |
| Total deferred tax liabilities | 0.8 | 0.6 |
| Net deferred tax assets | $ 77.5 | $ 78.3 |
Income Taxes - Schedule of Reconciliation of the Change in Gross Unrecognized Tax Benefits and Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Reconciliation of the change in gross unrecognized tax benefits | |||
| Balance as of January 1 | $ 1.3 | $ 1.1 | $ 0.9 |
| Additions based on current year tax positions | 0.4 | 0.3 | 0.7 |
| Reductions related to lapses of statutes of limitations | (0.6) | (0.1) | (0.5) |
| Balance as of December 31 | $ 1.1 | $ 1.3 | $ 1.1 |
Commitments and Contingencies (Details) - USD ($) |
Dec. 31, 2025 |
Dec. 31, 2024 |
Jan. 31, 2020 |
|---|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | |||
| Deposit guaranty on behalf of an affiliate | $ 2,500,000 | ||
| Guaranty liabilities | $ 0 | $ 0 |
Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Numerator: | |||
| Net income attributable to controlling interests | $ 80.0 | $ 85.0 | $ 65.8 |
| Denominator: | |||
| Weighted-average shares of common stock outstanding—basic (in shares) | 36,191,989 | 37,770,185 | 41,493,154 |
| Potential shares of common stock: | |||
| Weighted-average shares of common stock outstanding—diluted (in shares) | 36,222,195 | 38,328,406 | 42,537,943 |
| Earnings per share of common stock attributable to controlling interests: | |||
| Basic (in dollars per share) | $ 2.21 | $ 2.25 | $ 1.59 |
| Diluted (in dollars per share) | $ 2.21 | $ 2.22 | $ 1.55 |
| Restricted stock units | |||
| Potential shares of common stock: | |||
| Potential shares of common stock (in shares) | 30,206 | 22,178 | 7,448 |
| Employee stock options | |||
| Potential shares of common stock: | |||
| Potential shares of common stock (in shares) | 0 | 536,043 | 1,037,341 |
Revenue (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disaggregation of Revenue [Line Items] | |||
| Management fee revenue | $ 563.7 | $ 505.6 | $ 426.6 |
| Management fees | |||
| Disaggregation of Revenue [Line Items] | |||
| Management fee revenue | 517.7 | 431.1 | 373.2 |
| Management fees | Quant & Solutions | U.S. | |||
| Disaggregation of Revenue [Line Items] | |||
| Management fee revenue | 389.3 | 327.5 | 281.9 |
| Management fees | Quant & Solutions | Non-U.S. | |||
| Disaggregation of Revenue [Line Items] | |||
| Management fee revenue | $ 128.4 | $ 103.6 | $ 91.3 |
Employee Benefits (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Retirement Benefits [Abstract] | |||
| Other compensation liabilities | $ 37.9 | $ 48.4 | |
| Assets invested in defined contribution plans | 37.9 | 48.5 | |
| Increase in deferred compensation liability | 5.1 | 4.6 | $ 4.8 |
| Increase in defined contribution plan assets | 5.0 | 4.6 | 4.9 |
| Expenses in relation to qualified & non-qualified plans | $ 9.2 | $ 8.5 | $ 5.5 |
Equity-based Compensation - Schedule of Share-based Payments Liability (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Deferred Compensation, Share-based Arrangements Rollforward [Roll Forward] | |||
| Balance, beginning of period | $ 25.4 | ||
| Balance, end of period | 37.0 | $ 25.4 | |
| Cash Settled Awards | |||
| Deferred Compensation, Share-based Arrangements Rollforward [Roll Forward] | |||
| Balance, beginning of period | 25.4 | 23.0 | $ 19.4 |
| Amortization and revaluation of granted awards | 12.8 | 10.5 | 6.2 |
| Repurchases (cash-settled) | (1.2) | (8.1) | (2.6) |
| Balance, end of period | $ 37.0 | $ 25.4 | $ 23.0 |
Equity-based Compensation - Schedule of OM Asset Management Equity Incentive Plan Other Than Options (Details) - Acadian Asset Management Inc - Restricted stock units - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Number of shares | |||
| Outstanding at beginning of year (in shares) | 62,689 | 48,797 | 71,664 |
| Granted during the year (in shares) | 43,493 | 44,639 | 49,494 |
| Forfeited during the year (in shares) | 0 | 0 | (15,823) |
| Vested during the year (in shares) | (38,461) | (30,747) | (56,538) |
| Outstanding at end of year (in shares) | 67,721 | 62,689 | 48,797 |
| Weighted average grant date fair value per share | |||
| Outstanding at beginning of period, (in dollars per share) | $ 22.80 | $ 24.19 | $ 20.95 |
| Granted during the year (in dollars per share) | 26.99 | 21.68 | 24.04 |
| Forfeited during the year (in dollars per share) | 0 | 0 | 25.05 |
| Vested during the year (in dollars per share) | 23.06 | 23.54 | 19.72 |
| Outstanding at end of period, (in dollars per share) | $ 25.34 | $ 22.80 | $ 24.19 |
Derivatives and Hedging (Details) - USD ($) $ in Millions |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
Dec. 01, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Jul. 31, 2016 |
Jul. 31, 2015 |
|
| Derivative fair values | ||||||
| Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax | $ 0.0 | |||||
| Interest Expense | ||||||
| Derivative fair values | ||||||
| Gain (loss) reclassified from AOCI to interest expense | $ 6.3 | $ 3.6 | $ 3.4 | |||
| 4.80% Senior Notes Due July 27, 2026 | Senior notes | ||||||
| Derivative fair values | ||||||
| Repayments of senior debt | $ 275.0 | |||||
| Interest rate | 4.80% | |||||
| Amortization related to derivatives securities, before tax | $ 2.7 | |||||
| Treasury rate lock | Designated as a hedge | ||||||
| Derivative fair values | ||||||
| Notional amount | $ 300.0 | |||||
| Derivative, fair value, net | $ (34.4) | |||||
Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | ||||
|---|---|---|---|---|---|
Feb. 04, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Feb. 27, 2026 |
|
| Subsequent Event [Line Items] | |||||
| Dividends to shareholders (in dollars per share) | $ 0.04 | $ 0.04 | $ 0.04 | ||
| Subsequent Event | |||||
| Subsequent Event [Line Items] | |||||
| Dividends to shareholders (in dollars per share) | $ 0.10 | ||||
| Revolving credit facility | Line of Credit | Acadian | Subsequent Event | |||||
| Subsequent Event [Line Items] | |||||
| Outstanding balance on credit facility | $ 25 | ||||