 Pershing Square Capital Management, a New York-based hedge fund founded by CEO Bill Ackman, had acquired 2.8 million shares of Canadian Pacific, with a value of 202.4 million, by the end of 2021, according to a Monday 13F filing with the U.S. Securities and Exchange Commission. Pershing Square had omitted the share acquisition from a Feb. 14 filing following a request for confidential treatment, which was subsequently withdrawn Friday. 