Cramer's lightning round: I say thumbs up to MP Materials

• 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.

In this article

• 2015-HK
• MRVL
• RES
• MP
• SO

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Southern Co: "I'm going to bless the idea."

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MP Materials Corp: "I say, thumbs up, MP Materials."

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RPC Inc: "I want you to hold [onto] it."

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Marvell Technology Inc: "You don't want to buy until it reports. After it reports, we're going to take a solid look at it. ... If you do own it now, you'll do just fine."

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Li Auto Inc: "Listen to [Tesla CEO] Elon Musk on the conference call. He likes the Chinese automakers. Who am I to go against the smartest man in the world?"

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