Vetr Crowd Downgrades Mallinckrodt To Hold By: Benzinga via Benzinga February 14, 2017 at 16:48 PM EST On Tuesday, the Vetr crowd downgraded their rating for Mallinckrodt PLC (NYSE: MNK) from 5 stars (Strong Buy), issued 39 days ago, to 3 ... Read More >> Related Stocks: Mallinckrodt plc