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Carl Icahn, left, and William Ackman.
Carl Icahn, left, and William Ackman.

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Ackman and Icahn: It’s an activist investor smackdown

Investor Carl Icahn can’t figure out if activist investor Bill Ackman is the most sanctimonious man he’s met, or the most arrogant. Either way, it’s clear the two loudmouth billionaires won’t be friends any time soon.

On Friday, they made their mutual dislike for each other public when they called in for a CNBC TV interview-cum-sparring match.