Shares of Altimmune, Inc. ALT jumped 110.2% after the company reported completion of first development milestone toward a single-dose intranasal coronavirus vaccineShares of Wayfair Inc. W plunged 10.2% after the company reported a fourth-quarter earnings loss of $2.80 per share versus the Zacks Consensus Estimate of a loss of $2.65Shares of Big Lots, Inc. BIG slumped 29.6% after the company reported fiscal fourth-quarter earnings of $2.39 a share, missing the Zacks Consensus Estimate of $2.53Share of Codexis, Inc. CDXS dropped 12.2% after the company reported fourth quarter earnings of $0.02 per share, missing the Zacks Consensus Estimate of $0.06Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Big Lots, Inc. (BIG): Free Stock Analysis Report Codexis, Inc. (CDXS): Free Stock Analysis Report PharmAthene, Inc (ALT): Free Stock Analysis Report Wayfair Inc. (W): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research