D. E. Shaw & Co., L.P. is a multinational investment management firm founded in 1988 by David E. Shaw and based in New York City. The company is known for developing complicated mathematical models and sophisticated computer programs to exploit anomalies in the financial market. D. E. Shaw & Co. manages $55 billion in AUM, $35 billion of which are alternative investments and the remaining $20 billion long-oriented investments (as of June 1, 2021). In 2018, Institutional Investor reported that among hedge funds, D. E. Shaw & Co. had delivered the fifth-highest returns in the world since its inception.