Bill Ackman, the head of Pershing Square Capital Management, posted on X that the government should carefully review U.S.

Bill Ackman, the owner of investment firm Pershing Square, said on Saturday that he is reincorporating his management company ...

Billionaire hedge fund manager Bill Ackman revealed on Friday that his activist investment firm has bought up approximately $2 billion worth of shares of Uber — sending the ride-share company ...

Billionaire investor Bill Ackman pledged to cover the legal fees for a Texas doctor in a dispute with UnitedHealth Group Inc. over her claims that the company asked her to scrub out of an ...