He is not particularly upset about selling his 33 percent stake in Lions Gate Entertainment for $7 a share last year, long before "The Hunger Games" hit movie screens last weekend and earned $155 million in North America.

"We are proud of our performance," Icahn said of his company. "We were up 35 percent" last year. Owning Lions Gate, he added, "would’ve gotten us up to 37 percent."

An earlier version of this article had an incorrect ticker symbol for Regeneron.

REGN News & Analysis

 Cramer: Out with the New, In with the Old - 03 Jun 2013 EDT - CNBC.COM

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 UPDATE 1-Regeneron, Sanofi asthma drug seen as potential game changer - 21 May 2013 EDT

 Regeneron, Sanofi asthma drug seen as potential game changer - 21 May 2013 EDT

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