Jim Cramer Weighs In On Abiomed, Express Scripts And Lockheed Martin

On CNBC's "Mad Money Lightning Round," Jim Cramer said Express Scripts Holding Co ESRX is merging with CIGNA Corporation CI. Around 30 points ago, when the news was announced, Cramer said he's a buyer.

Instead of Lockheed Martin Corporation LMT, Cramer would buy Raytheon Company RTN. He explained that Lockheed has already moved.

Cramer thinks ABIOMED, Inc. ABMD is a good stock. He also likes Intuitive Surgical, Inc. ISRG.