Cowen Group Inc. is a diversified financial services firm that provides alternative investment management, investment banking, research, and sales and trading services through its two business segments: Ramius, LLC, a global alternative investment management business, and Cowen and Company, LLC, a broker-dealer business. Founded in 1918 by Harry Cowen and Arthur Cowen, Jr., the Firm is headquartered in New York City and has offices located worldwide.