Ackman's Pershing Square Holdings off 24.5 percent YTD
November 18, 2015 at 18:35 PM EST
NEW YORK (Reuters) - Billionaire hedge fund manager William Ackman's Pershing Square Holdings portfolio has lost 24.5 percent this year, extending its fall this week as its biggest holding, Valeant Pharmaceuticals, declined further, the company said on its website.
