Cramer's lightning round: Buy Express Scripts on its upcoming merger By: CNBC.com News October 09, 2018 at 18:53 PM EDT Jim Cramer opines on callers' favorite stocks at lightning speed, including a health-care play being absorbed by Cigna. Read More >> Related Stocks: Abiomed Inc Cigna Corp Express Scripts Holding Intuitive Surgical Lockheed Martin Raytheon Co