Cramer's lightning round: Rapid7 is not a buy - CNBC

"Mad Money" host Jim Cramer rings the lightning round bell, which means he's giving his answers to callers' stock questions at rapid speed.

Abbvie Inc: "I think the answer is that Abbvie, which we own big for our Charitable Trust, goes higher." NVIDIA Corp: "You have to buy it gingerly. Why? Because the sellers just come out of the wood… [+692 chars]

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