Bill Ackman's hedge fund rebounds 10% in May for second-best month since 2014 By: CNBC.com News June 08, 2018 at 13:24 PM EDT Bill Ackman's hedge fund notched a double-digit gain in May, posting its second-best month since going public. Read More >> Related Stocks: Chipotle Mexican Grill Herbalife Ltd Lowe's Companies Nike Inc United Technologies