Now Long On Valeant, Andrew Left Backtracks On 'Uninvestible' Comment By: Benzinga via Benzinga May 17, 2016 at 16:09 PM EDT Andrew Left and his research firm, Citron Research, previously trashed Valeant Pharmaceuticals Intl Inc (NYSE: VRX) business, calling ... Read More >> Related Stocks: Mallinckrodt plc Valeant Pharmaceuticals International, Inc.