Cramer's lightning round: We remain very bearish on natural gas

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

Range Resources: "It's natural gas, natural gas liquids, and we remain very bearish on that. It's the weakest part of the entire petro-chain."

Guardant Health: "Well, you know, it's a little speculative, but it's gene-sequencing and I've been recommending all those stocks, whether it be Thermo Fisher or whether it be Danaher."

Seattle Genetics: "Oh, wow. They had some great data last week. We had faith in them even from when we visited them about, I don't know, about half-dozen years ago in Seattle. Great quarter. Great information."

Main Street Capital Corp.: "I cannot count on this stock 'cause you can't tell what they really own. It's got a decent yield. ... Please, buy an index fund, [invest] first $10,000, and then we will do some speculation, but that is not what I'd like."

Zynebra Pharmaceuticals: No. Cannabinoids, special needs: If you want it, it's GW Pharma. Th'at's the way to play it."

WATCH: Cramer's lightning round

Questions for Cramer?
Call Cramer: 1-800-743-CNBC

Want to take a deep dive into Cramer's world? Hit him up!
Mad Money Twitter - Jim Cramer Twitter - Facebook - Instagram

Questions, comments, suggestions for the "Mad Money" website? [e-mail]