Cramer's Lightning Round: Mixed Reviews on Novavax, Sibanye Stillwater, and Upwork

Jim Cramer, host of CNBC's "Mad Money," expressed his negative sentiment towards Novavax, stating that he has "nothing good to say" about the company. Cramer recommended waiting for a pullback before investing in Camtek, favored Nucor over Atkore in the steel industry, advised caution with Coinbase due to its expensive stock price, and suggested that American Eagle Outfitters has improved but still lags behind Abercrombie & Fitch.