Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2025
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The unaudited Condensed Consolidated Financial Statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for annual financial statements. In the opinion of management, all necessary adjustments (which consists of only normal recurring items) have been made to fairly present the Condensed Consolidated Financial Statements for the interim periods presented. Results of operations for the three months ended March 31, 2025 are not necessarily indicative of the results that may be expected for the year ending December 31, 2025. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, filed with the Securities and Exchange Commission (“SEC”).
Fair Value Measurements	Fair Value Measurements The Company categorizes its fair value measurements according to a three-level hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are defined as follows: •Level 1 – Inputs that reflect unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date; •Level 2 – Inputs other than quoted prices that are observable for the asset or liability either directly or indirectly, including inputs in markets that are not considered to be active; and •Level 3 – Inputs that are unobservable and require significant management judgment or estimation. Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available under the circumstances. The carrying amounts of cash and cash equivalents and fees receivable approximate fair value due to the immediate or short-term maturity of these financial instruments.
Investments	Investments Investments primarily consist of investments in GCM Funds and other funds the Company does not control, but is deemed to exert significant influence, and are generally accounted for using the equity method of accounting. Under the equity method of accounting, the Company records its share of the underlying income or loss of such entities, which reflects the net asset value of such investments. Management believes the net asset value of the funds is representative of fair value. The resulting gains and losses are included as investment income in the Condensed Consolidated Statements of Income (Loss). The Company’s equity method investments in the GCM Funds investing in private equity, real estate and infrastructure (“GCM PEREI Funds”) are valued based on the most recent available information, which typically has a delay of up to three months due to the timing of financial information received from the investments held by the GCM PEREI Funds. The Company records its share of capital contributions to and distributions from the GCM PEREI Funds within investments in the Condensed Consolidated Statements of Financial Condition during the three-month lag period. To the extent that management is aware of material events that affect the GCM PEREI Funds during the intervening period, the impact of the events would be disclosed in the notes to the Condensed Consolidated Financial Statements. Certain subsidiaries which hold the general partner capital interest in the GCM Funds are not wholly owned, and as such, the portion of the Company’s investments owned by limited partners in those subsidiaries are reflected within noncontrolling interests in the Condensed Consolidated Statements of Financial Condition. The Company holds an investment in an unconsolidated entity, which is accounted for using the equity method of accounting. The investment is recognized at cost, adjusted for the Company’s share of the entity’s net income or loss, less any distributions or dividends received by the Company and any impairment of the investment. The Company records its share of capital contributions to and distributions from its investment within investments in the Condensed Consolidated Statements of Financial Condition during the three-month lag period. The Company records its proportionate share of net income or loss from the investment within investment income on the Condensed Consolidated Statements of Income (Loss) on a one quarter log. To the extent that management is aware of material events that affect its investment during the intervening period, the impact of the events would be disclosed in the notes to the Condensed Consolidated Financial Statements. For certain other debt investments, the Company has elected the fair value option. Such election is irrevocable and is made at the investment level at initial recognition. The debt investments are not publicly traded and are a Level 3 fair value measurement. For investments carried at fair value, the Company records the increase or decrease in fair value as investment income in the Condensed Consolidated Statements of Income (Loss). See Note 5 for additional information regarding the Company’s other investments.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. ASU 2023-09 requires enhanced income tax disclosures including disclosures of specific categories in the rate reconciliation and additional information for reconciling items that meet a quantitative threshold, additional disclosures about income taxes paid, and disclosure of pre-tax income or loss from continuing operations disaggregated between domestic and foreign income or loss. This guidance is effective for public business entities for fiscal years beginning after December 15, 2024. Companies should provide the enhanced disclosures on a prospective basis, however retrospective application is permitted. Early adoption is permitted for annual financial statements that have not yet been issued. The Company is evaluating this guidance and currently expects that adoption will result in enhanced income tax disclosures. In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. ASU 2024-03 requires public entities to disclose additional information about specific expense categories in the notes to the financial statements on an interim and annual basis. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and for interim periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of adopting ASU 2024-03.

Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2025

The unaudited Condensed Consolidated Financial Statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information. Accordingly, they do not include all of the information and footnotes required by GAAP for annual financial statements. In the opinion of management, all necessary adjustments (which consists of only normal recurring items) have been made to fairly present the Condensed Consolidated Financial Statements for the interim periods presented. Results of operations for the three months ended March 31, 2025 are not necessarily indicative of the results that may be expected for the year ending December 31, 2025. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, filed with the Securities and Exchange Commission (“SEC”).

Fair Value Measurements

The Company categorizes its fair value measurements according to a three-level hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are defined as follows:

•Level 1 – Inputs that reflect unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date;

•Level 2 – Inputs other than quoted prices that are observable for the asset or liability either directly or indirectly, including inputs in markets that are not considered to be active; and

•Level 3 – Inputs that are unobservable and require significant management judgment or estimation.

Observable inputs are inputs that market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available under the circumstances.

The carrying amounts of cash and cash equivalents and fees receivable approximate fair value due to the immediate or short-term maturity of these financial instruments.

Investments

Investments primarily consist of investments in GCM Funds and other funds the Company does not control, but is deemed to exert significant influence, and are generally accounted for using the equity method of accounting. Under the equity method of accounting, the Company records its share of the underlying income or loss of such entities, which reflects the net asset value of such investments. Management believes the net asset value of the funds is representative of fair value. The resulting gains and losses are included as investment income in the Condensed Consolidated Statements of Income (Loss).

The Company’s equity method investments in the GCM Funds investing in private equity, real estate and infrastructure (“GCM PEREI Funds”) are valued based on the most recent available information, which typically has a delay of up to three months due to the timing of financial information received from the investments held by the GCM PEREI Funds. The Company records its share of capital contributions to and distributions from the GCM PEREI Funds within investments in the Condensed Consolidated Statements of Financial Condition during the three-month lag period. To the extent that management is aware of material events that affect the GCM PEREI Funds during the intervening period, the impact of the events would be disclosed in the notes to the Condensed Consolidated Financial Statements.

Certain subsidiaries which hold the general partner capital interest in the GCM Funds are not wholly owned, and as such, the portion of the Company’s investments owned by limited partners in those subsidiaries are reflected within noncontrolling interests in the Condensed Consolidated Statements of Financial Condition.

The Company holds an investment in an unconsolidated entity, which is accounted for using the equity method of accounting. The investment is recognized at cost, adjusted for the Company’s share of the entity’s net income or loss, less any distributions or dividends received by the Company and any impairment of the investment. The Company records its share of capital contributions to and distributions from its investment within investments in the Condensed Consolidated Statements of Financial Condition during the three-month lag period. The Company records its proportionate share of net income or loss from the investment within investment income on the Condensed Consolidated Statements of Income (Loss) on a one quarter log. To the extent that management is aware of material events that affect its investment during the intervening period, the impact of the events would be disclosed in the notes to the Condensed Consolidated Financial Statements.

For certain other debt investments, the Company has elected the fair value option. Such election is irrevocable and is made at the investment level at initial recognition. The debt investments are not publicly traded and are a Level 3 fair value measurement. For investments carried at fair value, the Company records the increase or decrease in fair value as investment income in the Condensed Consolidated Statements of Income (Loss). See Note 5 for additional information regarding the Company’s other investments.

Recently Issued Accounting Standards

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. ASU 2023-09 requires enhanced income tax disclosures including disclosures of specific categories in the rate reconciliation and additional information for reconciling items that meet a quantitative threshold, additional disclosures about income taxes paid, and disclosure of pre-tax income or loss from continuing operations disaggregated between domestic and foreign income or loss. This guidance is effective for public business entities for fiscal years beginning after December 15, 2024. Companies should provide the enhanced disclosures on a prospective basis, however retrospective application is permitted. Early adoption is permitted for annual financial statements that have not yet been issued. The Company is evaluating this guidance and currently expects that adoption will result in enhanced income tax disclosures.

In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. ASU 2024-03 requires public entities to disclose additional information about specific expense categories in the notes to the financial statements on an interim and annual basis. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and for interim periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of adopting ASU 2024-03.