Bill Ackman bolsters Valeant CEO Michael Pearson

Bill Ackman bolsters Valeant CEO Michael Pearson http://www.cnbc.com/2015/11/05/bill-ackman-supports-valeant-ceo-michael-pearson.html Pershing Square's Bill Ackman has sent a letter to Valeant Chairman and CEO Michael Pearson, expressing support of his leadership.