Rheumatologist Explains Why Mallinckrodt's Acthar Is A Winner By: Benzinga via Benzinga April 20, 2016 at 13:35 PM EDT Piper Jaffray reiterated its Overweight rating and $97 target price on Mallinckrodt PLC (NYSE: MNK) after a Rheumatologist gave ... Read More >> Related Stocks: Mallinckrodt plc