William Albert Ackman, more commonly known as Bill Ackman, is the founder and CEO of Pershing Square Capital Management, a ...

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

Ackman recently took activist investing to an even higher level. He wants -- and expects -- President-elect Donald Trump to make two stocks in his Pershing Square Capital Management portfolio big ...

Billionaire investor Bill Ackman has been climbing the ranks of best investors to watch for much of the 21st century. Like most hedge funds, his returns have been volatile. For instance ...

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 ...

Billionaire hedge fund manager Bill Ackman announced plans to build a modern-day Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B). Although Ackman and his investors would own most of it, it would be ...

Bill Ackman, the billionaire CEO of Pershing Square Capital Management, says he will move his management company out of Delaware to reincorporate in Nevada. His announcement, which came in a post ...

Billionaire investor Bill Ackman questioned whether DeepSeek‘s hedge fund affiliate potentially profited from Monday’s tech stock rout, which saw Nvidia Corp. NVDA shares plunge 17% following ...

Billionaire investor Bill Ackman said Monday that Pershing Square will increase its stake in real estate giant Howard Hughes Holdings by $1 billion in a bid to create “a modern-day Berkshire ...

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 ...