Shares of Mersana Therapeutics, Inc. MRSN surged 69.1% after the company reported interim safety, tolerability and efficacy data from the ongoing expansion segment of its Phase 1 study evaluating XMT-1536.Shares of Remark Holdings, Inc. MARK soared 18.5% after the company announced the launch of a new website, RemarkThermal.com.Shares of HEICO Corporation HEI gained 5.6% it reported second-quarter fiscal 2020 earnings of 55 cents per share, which surpassed the Zacks Consensus Estimate of 42 cents.Shares of Keysight Technologies, Inc. KEYS lost 1.7% after the company reported second-quarter fiscal 2020 non-GAAP earnings of 78 cents per share, missing the Zacks Consensus Estimate by 22%.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 Keysight Technologies Inc. (KEYS): Free Stock Analysis Report Heico Corporation (HEI): Free Stock Analysis Report Remark Holdings, Inc. (MARK): Free Stock Analysis Report Mersana Therapeutics, Inc. (MRSN): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research