Ackman's Valeant horror mirrors his disaster with JCPenny's

The Valeant Pharmaceuticals nightmare that is occurring for Bill Ackman probably feels like a flashback to his last foray into taking charge of a major public company. That didn't turn out so well. The hedge fund magnate joined JCPenney's board early in 2011 after his Pershing Square Capital Management fund amassed a controlling stake in...