Shares of Eton Pharmaceuticals, Inc. ETON jumped 30.9% after the company reported purchase of US marketing rights for pediatric orphan drug Alkindi SprinkleShares of SmileDirectClub, Inc. SDC rose 13.4% after announced that it will be producing medical-grade face shields for health care workers amidst the coronavirus outbreakShare of Roadrunner Transportation Systems, Inc. RRTS dropped 34.3% after the company announced plans to voluntarily withdraw from NYSE and deregister with the SECShares of BIO-key International, Inc. BKYI jumped 91.8% after the company said it has won a $45 million contract for its biometric software and hardware solutions 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 Roadrunner Transportation Systems, Inc (RRTS): Free Stock Analysis Report BIO-key International Inc. (BKYI): Free Stock Analysis Report Eton Pharmaceuticals, Inc. (ETON): Free Stock Analysis Report SmileDirectClub, Inc. (SDC): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research