Cramer's lightning round: Meme traders should target Upstart shorts

• 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.

Anavex Life Sciences: "I'm intrigued because the Biogen data doesn't look that good. I think you stick with it. It's real spec, though, but I think you stick with it."

GS Acquisition Holdings: "That's a very important SPAC that I don't know enough about ... I've got to do more work on that particular SPAC because I do hear good things."

Nio: "We're done with Chinese IPOs. I want you to sell Nio ... I want you to sell half of it tomorrow, and I hope it goes up. I love your interest, but I am very worried about China."

Churchill Capital V: "I've got to do more work."

Upstart: "I don't understand the short position in Upstart. Why don't the meme people, the Apesters, whatever the heck they are [and] call themselves, go after that company because it is really good. Artificial intelligence lending. Would you please go after something good?"

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