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Check out which companies are making headlines after the bell Wednesday:
CNBC's Jon Fortt reports on a letter from activist investor Carl Icahn in regards to eBay and its PayPal business.
The rise and success of activist investors is changing the dynamic in the battle for corporate control, NYT reports.
Michael Gross, author of "House of Outrageous Fortune," discusses his book which goes inside the nouveau-riche world of Fifteen Central Park West home to power players like Lloyd Blankfein, Denzel Washington and Sting.
Check out Carl Icahn's greatest hits and misses over the years.
CNBC's Kate Kelly reports some of the biggest players in money management hold long positions in Herbalife as a personal bet against Bill Ackman.
CNBC's Scott Wapner and Herb Greenberg analyze Herbalife's stock price after the FTC investigation was announced.
Harvey Pitt, Kalorama Partners CEO & former SEC chairman, weighs in on the feud between Carl Icahn and Bill Ackman over Herbalife. "It's starting to look like Ackman is trying to get the stock price lower than it is currently trading at," Pitt says.
CNBC's Eamon Javers reports activist investor Bill Ackman will host a conference call today about Herbalife's China business.
What's behind investor activist Carl Icahn's battle with Marc Andreessen, the entrepreneur turned technology investor.
Carl Icahn digs in on his criticism of eBay's management and weighs in on Bill Ackman again.
While the U.S. economy appears to be on "decent footing," Leon Cooperman says that he sees a couple of drags to a real recovery.
CNBC's Eamon Javers reports Herbalife has responded to investor Bill Ackman's most recent attack.
Investor Carl Icahn discusses Bill Ackman's battle to bring down Herbalife. Icahn says Ackman's attack is unfounded, relentless and fraudulent.
CNBC's Scott Wapner speaks with investor Carl Icahn about eBay's decision to reject his proposal to put two of his employees on its board. Icahn also discusses his most recent letter where he accuses eBay CEO John Donahoe of losing its stockholders over $4 billion.
Amid the dispute between Carl Icahn and eBay, Steve Case, The Case Foundation founder & chairman, discusses how boards should deal with investor activism.
EBay will reject a slate of board nominees proposed by Carl Icahn, raising the stakes in a battle over the company's governance.
CNBC's Andrew Ross Sorkin reports eBay will be putting out a statement rejecting Carl Icahn's efforts to put two of his own board members on eBay's board.
CNBC's Dominic Chu reports activist investor Carl Icahn will now include Facebook as a forum to disclose information and communicate with investors.
Since the market bottom in 2009, America's billionaires have seen their fortunes and numbers soar to new records.