Why Bill Ackman sees activist investing as a moral crusade

For the Pershing Square Capital Management CEO, activist investing is just as much a moral calling as it is a lucrative one
Bill Ackman attends the Hamptons International Film Festival SummerDocs Series screening of 'Betting On Zero' at Guild Hall on August 6, 2016 in East Hampton, New York.
Matthew Eisman/Getty Images for Hamptons International Film Festival