Oppenheimer Holdings Inc. operates as a middle-market investment bank and full-service broker-dealer. It provides brokerage services covering corporate equity and debt securities, money market instruments, exchange-traded options, municipal bonds, mutual funds, exchange-traded funds, certain precious metals, and unit investment trusts; financial and wealth planning services; and margin lending services. The company also offers asset management services, including separately managed accounts, mutual fund managed accounts, discretionary portfolio management programs, non-discretionary investment advisory and consultation services, alternative investments, portfolio enhancement programs, and institutional taxable fixed income portfolio management strategies and solutions, as well as taxable a…