On CNBC's "Mad Money Lightning Round," Jim Cramer advised a viewer to buy some Ethereum instead of Hut 8 Mining Corp (NASDAQ:HUT).

Cramer likes Dynavax Technologies Corporation (NASDAQ:DVAX) and other companies that are involved in personalized immunology.

People didn't like Sprinklr Inc's (NYSE:CXM) quarter, said Cramer. It is very hard for him to get a reading for the company.

Cramer likes Ping Identity Holding Corp (NYSE:PING), but he would rather own Palo Alto Networks Inc (NYSE:PANW) or Crowdstrike Holdings Inc (NASDAQ:CRWD).