Organization	12 Months Ended
Mar. 31, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization StepStone Group Inc. (“SSG”) was incorporated in the state of Delaware on November 20, 2019 and, following its initial public offering in 2020, acts as a holding company for StepStone Group LP (the “Partnership”). SSG is the sole managing member of StepStone Group Holdings LLC (the “General Partner”), the general partner of the Partnership. Unless otherwise specified, “StepStone” or the “Company” refers to SSG and its consolidated subsidiaries, including the Partnership, throughout the remainder of these notes to the consolidated financial statements. The Company is a global private markets investment firm focused on providing customized investment solutions and advisory and data services to its clients. The Company’s clients include some of the world’s largest public and private defined benefit and defined contribution pension funds, sovereign wealth funds and insurance companies, as well as prominent endowments, foundations, family offices and private wealth clients, including high-net-worth and mass affluent individuals. The Company partners with its clients to develop and build private markets portfolios designed to meet their specific objectives across the private equity, infrastructure, private debt and real estate asset classes. These portfolios utilize several types of synergistic investment strategies with third-party fund managers, including commitments to funds (“primaries”), acquiring stakes in existing funds on the secondary market (“secondaries”) and investing directly into companies (“co-investments”). The Company, through its subsidiaries, acts as the investment advisor and general partner or managing member to separately managed accounts (“SMAs”) and focused commingled funds (collectively, the “StepStone Funds”). SSG is a holding company whose principal asset is a controlling financial interest in the Partnership through its ownership of all of the Partnership’s Class A units and 100% of the membership interests in the General Partner of the Partnership. SSG acts as the sole managing member of the General Partner of the Partnership and, as a result, indirectly operates and controls all of the Partnership’s business and affairs. As a result, SSG consolidates the financial results of the Partnership and reports non-controlling interests related to the Class B, Class C and Class D units of the Partnership which are not owned by SSG. The assets and liabilities of the Partnership represent substantially all of SSG’s consolidated assets and liabilities, with the exception of certain deferred income taxes and payables due to affiliates pursuant to tax receivable agreements (see note 11). Each share of Class A common stock and Class B common stock is entitled to one vote. As of March 31, 2026, SSG held approximately 66.0% of the economic interest in the Partnership. As the Partnership’s limited partners exchange their Class B, Class C and Class D units into SSG’s Class A common stock in the future, SSG’s economic interest in the Partnership will increase relative to that of the Class B, Class C and Class D unitholders.

StepStone Group Inc. (“SSG”) was incorporated in the state of Delaware on November 20, 2019 and, following its initial public offering in 2020, acts as a holding company for StepStone Group LP (the “Partnership”). SSG is the sole managing member of StepStone Group Holdings LLC (the “General Partner”), the general partner of the Partnership. Unless otherwise specified, “StepStone” or the “Company” refers to SSG and its consolidated subsidiaries, including the Partnership, throughout the remainder of these notes to the consolidated financial statements.

The Company is a global private markets investment firm focused on providing customized investment solutions and advisory and data services to its clients. The Company’s clients include some of the world’s largest public and private defined benefit and defined contribution pension funds, sovereign wealth funds and insurance companies, as well as prominent endowments, foundations, family offices and private wealth clients, including high-net-worth and mass affluent individuals. The Company partners with its clients to develop and build private markets portfolios designed to meet their specific objectives across the private equity, infrastructure, private debt and real estate asset classes. These portfolios utilize several types of synergistic investment strategies with third-party fund managers, including commitments to funds (“primaries”), acquiring stakes in existing funds on the secondary market (“secondaries”) and investing directly into companies (“co-investments”).

SSG is a holding company whose principal asset is a controlling financial interest in the Partnership through its ownership of all of the Partnership’s Class A units and 100% of the membership interests in the General Partner of the Partnership. SSG acts as the sole managing member of the General Partner of the Partnership and, as a result, indirectly operates and controls all of the Partnership’s business and affairs. As a result, SSG consolidates the financial results of the Partnership and reports non-controlling interests related to the Class B, Class C and Class D units of the Partnership which are not owned by SSG. The assets and liabilities of the Partnership represent substantially all of SSG’s consolidated assets and liabilities, with the exception of certain deferred income taxes and payables due to affiliates pursuant to tax receivable agreements (see note 11). Each share of Class A common stock and Class B common stock is entitled to one vote. As of March 31, 2026, SSG held approximately 66.0% of the economic interest in the Partnership. As the Partnership’s limited partners exchange their Class B, Class C and Class D units into SSG’s Class A common stock in the future, SSG’s economic interest in the Partnership will increase relative to that of the Class B, Class C and Class D unitholders.