With Bill Ackman's posts, one of the world’s most prominent investors is intensifying a dispute between a doctor and UnitedHealth on social media.

Pershing Square Capital Management Chief Executive Officer Bill Ackman said he took down a critical post about UnitedHealth Group Inc. after the company’s lawyers told him the claims about the company ...

Former bond king Bill Gross says that the hot energy pipeline stocks “‘seem to be topping” after a big run and that he has ...

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

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 ...

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

Trump administration dialed back its Gaza proposal after global backlash. US not committing troops or funds. Proposal complicates peace talks.

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 ...

UnitedHealth Group has raised concerns with the top US securities regulator over a social media post by activist investor ...

Mattel shares climbed as much as 18% in early trading on Wednesday after the Hot Wheels maker provided an upbeat annual ...

UnitedHealth Group Inc. said it contacted the US Securities and Exchange Commission with concerns about investor Bill ...