Organization	6 Months Ended
Organization	Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization Oppenheimer Holdings Inc. ("OPY" or the "Parent") is incorporated under the laws of the State of Delaware. The condensed consolidated financial statements include the accounts of OPY and its consolidated subsidiaries (together, the "Company"). Oppenheimer Holdings Inc., through its operating subsidiaries, is a leading middle market investment bank and full service broker-dealer that is engaged in a broad range of activities in the financial services industry, including retail securities brokerage, institutional sales and trading, investment banking (corporate and public finance), equity and fixed income research, market-making, trust services, and investment advisory and asset management services. The Company is headquartered in New York and has 88 retail branch offices in 25 states located throughout the United States and offices in Puerto Rico, Tel Aviv, Israel, Hong Kong, China, London, England, St. Helier, Isle of Jersey, and Geneva, Switzerland. The principal subsidiaries of OPY are Oppenheimer & Co. Inc. ("Oppenheimer"), a registered broker-dealer in securities and investment adviser under the Investment Advisers Act of 1940; Oppenheimer Asset Management Inc. ("OAM") and its wholly-owned subsidiary, Oppenheimer Investment Management LLC, both registered investment advisers under the Investment Advisers Act of 1940; Oppenheimer Trust Company of Delaware ("Oppenheimer Trust"), a limited purpose trust company that provides fiduciary services such as trust and estate administration and investment management; OPY Credit Corp., which conducts secondary trading activities related to the purchase and sale of loans and trade claims, primarily on a riskless principal basis; Oppenheimer Europe Ltd., based in the United Kingdom, with offices in the Isle of Jersey, and Switzerland, which provides institutional equities and fixed income brokerage and corporate finance and is regulated by the Financial Conduct Authority; and Oppenheimer Investments Asia Limited, based in Hong Kong, China, which provides fixed income and equities brokerage services to institutional investors and is regulated by the Securities and Futures Commission. Oppenheimer owns Freedom Investments, Inc. ("Freedom"), a registered broker dealer in securities, which provides discount brokerage services on a limited basis, and Oppenheimer Israel (OPCO) Ltd., based in Tel Aviv, Israel, which provides investment services in the State of Israel and operates subject to the authority of the Israel Securities Authority.

OPPENHEIMER HOLDINGS INC 10-Q