Here's what Jim Cramer had to say about some of the stocks during the Mad Money Lightning Round:

Merck (MRK - Get Report) : "They report later this month and the stock will go down. Buy half now and half when they report."

Cloudflare (NET) : "I would be careful. This stock has been clobbered."

Exelon (EXC - Get Report) : "That's not my favorite. I like Dominion Energy (D - Get Report) more."

Advanced Micro Devices (AMD - Get Report) : "I like what they're doing. Don't forget Nvidia  (NVDA - Get Report) is on fire, too."

Endo Pharmaceuticals (ENDP - Get Report) : "I can't say it's a steal. It's speculative."

Ionis Pharmaceuticals (IONS - Get Report) : "This is a battleground. I like Seattle Genetics (SGEN - Get Report) ."

Tandem Diabetes Care (TNDM - Get Report) : "I like Tandem. I like the stock."

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At the time of publication, Cramer's Action Alerts PLUS had a position in NVDA.