UnitedHealth has reached out to the U.S. Securities and Exchange Commission about billionaire investor Bill Ackman's ...

Billionaire investor Bill Ackman sparked a sell-off in UnitedHealth (UNH) shares on Wednesday after suggesting on X that the ...

Bill Ackman shared choice comments on UnitedHealth Group on his social media account before deleting his posts. Here's a look ...

Plus, the food conglomerate owner of Krispy Kreme buys an insurance company and a distressed-debt battle in Japan ...

Bill Ackman announced on Saturday that his management company would leave Delaware to reincorporate in Nevada.

UnitedHealth shares fell more than 4% on Wednesday before finishing down 1%, a day after hedge-fund manager Bill Ackman wrote a post on social media that said the insurer could be overstating its ...

File-sharing service Dropbox unveiled plans last Friday to move its incorporation from Delaware to Nevada. The San Francisco-based tech firm said in a securities filing that it’s in a transformational ...

Billionaire hedge fund manager Bill Ackman deleted a post on X in which he raised the possibility that the midair collision between a passenger jet and a military helicopter near Reagan Airport on ...

Bill Ackman built a net worth of $9.3 billion by spotting promising opportunities. The hedge fund manager doesn't usually reveal the opportunities he likes to the public. However, he recently made an ...

Bill Ackman, the billionaire hedge fund manager and CEO of Pershing Square Capital Management.Adam Jeffery/CNBC via Getty Images Billionaire hedge fund manager Bill Ackman says he is moving his ...