Billionaire investor Bill Ackman is once again flexing his political muscle — this time by publicly touting the New York mayoral candidacy of former hedge fund manager Whitney Tilson because ...

Billionaire Bill Ackman helped fund the spinoff of Howard Hughes Holdings Inc. from General Growth Properties in 2010 and has been a big shareholder in the real-estate company since then.

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 ...

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 ...