Shares in Pershing Square, a fund run by activist investor Bill Ackman, opened down 2 percent on their Amsterdam debut on Monday.» Read More
Carl Icahn accuses hedge fund manager Bill Ackman of "pumping and dumping," and Ackman comes back at him, with the "Street Signs" crew.
Carl Icahn says hedge fund manager Bill Ackman "has one of the worst reputations on Wall Street." CNBC's Kate Kelly and Robert Frank, weigh in.
Discussing whether Hedge Fund manager Bill Ackman or Carl Icahn made the better case today. This is what happens when business goes bad, says Wapner.
Call them the "Bickering Billionaires," two financial titans who squared off in a breathtaking, unforgettable smackdown Friday on CNBC.
CNBC's Scott Wapner and the "Power Lunch" crew discuss what Hedge fund manager Bill Ackman and Carl Icahn had to say to one another regarding Ackman's Herbalife short.
Hedge fund manager Bill Ackman and Carl Icahn, spoke out on the "FMHR," about Herbalife. CNBC's Jim Cramer and the "Power Lunch" crew, discuss the mechanics of the stock versus the way the company is structured, and what the motivation for a position in this company is.
CNBC's Scott Wapner discusses details from the conversation between Hedge fund manager Bill Ackman and Carl Icahn. CNBC's Jim Cramer, Herb Greenberg and the "Power Lunch" crew, weigh in. (9:26)
Billionaire activist investors Carl Icahn and Bill Ackman trade criticism over Herbalife and beyond.
Hedge fund manager Bill Ackman responds to criticism from Carl Icahn for his short position in Herbalife. Ackman also explains why he stands by Ron Johnson's vision for JC Penney.
Billionaire activist investors Carl Icahn and Bill Ackman are at it again.
David Einhorn's Greenlight Capital had a 2012 return of 7.9 percent, and a loss of 4.9 percent. CNBC's Herb Greenberg, offers insight.
CNBC's Kate Kelly reports David Einhorn of Greenlight Capital told investors shorts in iron ore miners hurt the results, not Herbalife.
Herbalife has been caught up in a battle royale with several notable money managers, so what's Cramer's take?
Bank of America has hit its lows of the day. Meanwhile CNBC's Herb Greenberg has an update on the Herbalife saga.
CNBC's David Faber reports Herbalife's updated preliminary fourth quarter and 2012 results.
Some of the names on the move ahead of the open.
Rumack: Can you fly this plane, and land it? Ted Striker: Surely you can't be serious. Rumack: I am serious... and don't call me Shirley. -Airplane Below, Boeing's Dreamliner woes become more serious, as the FAA temporarily grounds all 787 planes.
Billionaire Carl Icahn is telling other investors he has bought a stake in nutritional supplements seller Herbalife, according to a Dow Jones report on Wednesday.
According to the Dow Jones, Carl Icahn has taken a stake in Herbalife, reports CNBC's Herb Greenberg.
Take a look at some of Monday's midday movers: