See how a competition involving Wall Street giants Bill Ackman, Carl Icahn and others is shaping up. And it's all for charity ...

Hedge fund manager Bill Ackman, who runs Pershing Square Capital Management, spoke about his massive wager against Herbalife at the annual Harbor Investment Conference. "The last time I gave a ...

Hedge fund manager Bill Ackman, the founder of $12 billion Pershing Square Capital Management, has just released 38 pages of questions for Herbalife. There are 284 questions in total. Ackman ...

Their most infamous feud dates back to 2013 when Ackman took a massive short position against nutrition company Herbalife (HLF) after claiming it was a pyramid scheme. Icahn, on the other hand ...

In 2013, Icahn and Ackman argued publicly about Herbalife during a CNBC interview. The live exchange, which raged for almost 45 minutes, devolved into personal insults. Icahn called Ackman a ...

A year ago, the outlook was different. Heading into 2014, Ackman seemed to be in trouble. His long position in JC Penney Co. and short position in Herbalife Ltd. had both gone disastrously wrong, ...

In 2012, Pershing Square took a short position in nutritional supplement company Herbalife (HLF), with Ackman saying that the multilevel marketing company was a "pyramid scheme." Eventually ...

He has blamed Carl Icahn for causing him to lose money shorting Herbalife after the Wall Street legend bought shares in the multilevel-marketing company and boosted its stock price following a ...