Cramer's lightning round: Sell Mallinckrodt after its 'nutty' acquisition of Acthar By: CNBC.com News November 15, 2017 at 18:49 PM EST Jim Cramer shared his take on callers' favorite stocks at lightning speed, including that of a pharmaceutical company. Read More >> Related Stocks: Alteryx Inc Charles River Laboratories Intl Gopro Inc Cl A Idexx Laboratories Mallinckrodt plc