
William "Bill" Ackman, founder and chief executive officer of Pershing Square Capital Management LP, pauses before an interview in New York, U.S., on Thursday, Dec. 20, 2012. Herbalife Ltd., the maker of namesake nutritional and weight-loss supplements, fell for the second day after Ackman said he has taken a short position on the company. Photographer: Scott Eells/Bloomberg *** Local Caption *** Bill Ackman
Scott Eells/Bloomberg