Ackman: Icahn Wanted to be My Friend, I Said No
January 25, 2013 at 08:06 AM EST
Billionaire activist investors and longtime rivals Carl Icahn and Bill Ackman are at it again. This time, the two are tangling over Ackman's short position in Herbalife, a debate that extended itself into barbs over a 10-year-old legal dispute.