Top gainers in the sector included Camtek LTD. (NASDAQ: CAMT ), MaxLinear, Inc. (NYSE: MXL ), and Convergys Corp (NYSE: CVG ). Shares of CPI Aerostructures, Inc. (NYSE: CVU ) got a boost, shooting up 26 percent to $7.20 after the company posted upbeat Q1 results. Wayfair Inc (NYSE: W ) shares were also up, gaining 18 percent to $60.47 after first-quarter earnings boasted a 2.7-percent sales beat and 46-percent year-over-year increase in active customers.