Valeant buying surges as drugmaker's shares slide

Several large hedge fund investors bought more shares in beleaguered drug giant Valeant Pharmaceutials -- just as its shares began to tumble. Steve Mandel's Lone Pine, with a 2.2 percent stake in Valeant, bought 2.2 million more shares in the third quarter for a 7.5 million-share position, it revealed in a securities filing Monday. Andreas...