Bill Ackman dumps Berkshire, adds to other holdings with hedge fund up more than 20% this year

Bill Ackman, founder and CEO of Pershing Square Capital Management.
Adam Jeffery | CNBC

Pershing Square founder Bill Ackman said Wednesday on a call that the hedge fund sold its stake in Warren Buffett's Berkshire Hathaway. Ackman also noted the fund's massive returns thus far in 2020 while the broader market struggles amid the coronavirus pandemic.