Piper Jaffray was an American investment bank founded in 1895, headquartered in Minneapolis, Minnesota. The firm specialized in investment banking, institutional brokerage, and asset management services. It served corporate, institutional, and government clients, providing advisory and underwriting expertise. In 2020, Piper Jaffray merged with Sandler O’Neill & Partners to form Piper Sandler, expanding its capabilities in financial services and capital markets.