David Einhorn

David Einhorn founded Greenlight Capital in 1996 with $900,000 in initial capital and built it into a prominent long/short equity hedge fund. He became famous for a series of high-profile short selling calls based on detailed fundamental research, including Allied Capital (which he accused of fraud), Lehman Brothers (which he publicly criticized at a conference in 2008, months before its collapse), and later Green Mountain Coffee Roasters, Netflix, and Tesla. His book "Fooling Some of the People All of the Time" documented his multi-year battle with Allied Capital. Einhorn is also a serious poker player, having finished third in the World Series of Poker Main Event. In later years, Greenlight underperformed through extended periods as the market turned away from value-oriented investing and some of his major short positions moved against him, demonstrating the challenge of maintaining conviction short positions in momentum-driven markets.