Walmart Inc.'s WMT shares surged 6.8% following the news that the company will unveil a new subscription program for $98 per year to provide various services to its members.Shares of Novavax Inc. NVAX soared 31.6% after it awarded $1.6 by the U.S. government to expedite testing, manufacturing and commercialization of a potential COVID-19 vaccine.Shares of DocuSign Inc. DOCU surged 3.7% after the company acquired Liveoak Tehnologies for $38 million to diversify on online notarization space.Regeneron Pharmaceuticals Inc.'s REGN shares gained 2.2% after it received $450 million from the U.S. government to produce and supply its still investigational drug for COVID-19 treatment. Want 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 Regeneron Pharmaceuticals, Inc. (REGN): Free Stock Analysis Report Walmart Inc. (WMT): Free Stock Analysis Report Novavax, Inc. (NVAX): Free Stock Analysis Report DocuSign Inc. (DOCU): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research