Bill Ackman runs Pershing Square Capital Management. He is perhaps best known for a disastrous short position in Herbalife, a nutrition company he called a pyramid scheme. Ackman made a $1 billion bet against Herbalife in 2012, expecting the stock to go to zero, but it had doubled by the time he exited the position in 2018.However, Ackman has made some excellent moves in the market as well. Indeed, his hedge fund returned 288% over the past five years, easily topping the S&P 500's 107% gain. That outperform ...