On CNBC's "Mad Money Lightning Round," Jim Cramer said the negative commentary about Vertex Pharmaceuticals Incorporated (NASDAQ:VRTX) is wrong. He doesn't understand why it's trading so low.

Cramer doesn't want to bail on Quantumscape Corp (NYSE:QS) because it's a too interesting spec.

He wants to be a buyer of Canopy Growth Corp (NASDAQ:CGC) because it's holding well after some negative commentary about the cannabis sector.

eXp World Holdings Inc (NASDAQ:EXPI) is a very good company, said Cramer. He is more partial to Zillow Group Inc Class A (NASDAQ:ZG).

Cramer advised a viewer with a long position in FuelCell Energy Inc (NASDAQ:FCEL) to take some off the table and let the rest run.

DISH Network Corp (NASDAQ:DISH) is too risky for Cramer.

Cramer would rather be in Southwest Airlines Co (NYSE:LUV) than in Luminar Technologies Inc (NASDAQ:LAZR).