Cramer's lightning round: Evelo Biosciences is worth a speculative bet

• 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.

Omega Healthcare: "This is hard for me to fathom because it's diverged so much from Ventas ... which has 3% yield. I've got to see what's going on. Usually, that's a red flag to have a yield [as high as Omega]."

Evelo Biosciences: "Total spec on different illnesses. When I see a spec on cancer because my mom died from cancer, I say, 'Listen, let's give this one a shot.' Someone might have something against these dreaded diseases."

Zscaler: "I like [CEO Jay Chaudhry]. Here's the problem: This stock has never had a down day, it seems. But yeah, Jay does great. Zscaler is really good and please, let's not forget Okta."

Dycom Industries: "Why the heck isn't that stock higher? Don't we have huge problems with the wires all over the utilities?"

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