D. E. Shaw & Co., L.P. is a global investment management firm founded in 1988 by David E. Shaw and based in New York City. The firm has offices in New York, Hong Kong, Hyderabad, Shanghai and Tokyo. The company has made investments in technology, wind power, real estate, and financial services firms. The subsidiaries of the company acquired the toy store FAO Schwarz and eToys.com. - Source: Wikipedia