Shares of Virtusa Corporation VRTU jumped 24.5% after Baring Private Equity Asia announced plans to acquire the company for $51.35 per share in cash.Shares of Overstock.com, Inc. OSTK rose 8.1% after the company reported that after the Financial Industry Regulatory Authority approved tZERO's membership application.Kaleyra, Inc.’s KLR shares surged 10.2% after the company launched verified calls services for Google. Shares of Rockwell Medical, Inc. RMTI surged 9.8% after the company reportedan exclusive license deal with Jeil Pharma for rights to commercialize Triferic in South Korea.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 Rockwell Medical, Inc. (RMTI): Free Stock Analysis Report Overstock.com, Inc. (OSTK): Free Stock Analysis Report Virtusa Corporation (VRTU): Free Stock Analysis Report GigCapital, Inc. (KLR): Free Stock Analysis Report To read this article on Zacks.com click here.