David M. Einhorn is an American investor and hedge fund manager, known as the founder and president of Greenlight Capital. He established Greenlight Capital, a "long-short value-oriented hedge fund," in May 1996 with $900,000 in start-up capital. Einhorn graduated summa cum laude from Cornell University with a B.A. in government in 1991, after growing up in New Jersey and Wisconsin.
Over its first decade, Greenlight Capital experienced annualized returns of 26%.