Shares of cyber security companies were broadly higher in morning trading Wednesday, after Bloomberg reported that Symantec Corp. was in talks to be acquired by Broadcom Inc. /zigman2/quotes/200646538/composite AVGO +0.72% . The ETFMG Prime Cyber Security ETF /zigman2/quotes/207892345/composite HACK +0.13% rose 1.7%, 50 of 54 equity components trading higher. Symantec's stock led the way with a 13.3% surge, with trading volume of 30.1 million shares more than 4-times the full-day average. Among other more-active ETF components, shares of CrowdStrike Holdings Ind. /zigman2/quotes/212513426/composite CRWD -2.26% ran up 3.3%, FireEye Inc. /zigman2/quotes/204730283/composite FEYE -1.34% rallied 3.2%, Cisco Systems Inc. /zigman2/quotes/209509471/composite CSCO +0.41% rose 1.2% and Zscaler Inc. /zigman2/quotes/203585803/composite ZS +0.65% climbed 1.7%. The ETF has now advanced 21.1% year to date, while the S&P 500 /zigman2/quotes/210599714/realtime SPX +0.66% has gained 19.3%.