shares of gilead sciences inc gild slid 144 to 5966 wednesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 063 to 460245 and dow jones industrial average djia falling 019 to 3522881 the stocks fall snapped a twoday winning streak gilead sciences inc closed 1446 short of its 52week high 7412 which the company achieved on december 30th the stock underperformed when compared to some of its competitors wednesday as johnson  johnson jnj rose 104 to 17959 merck  co inc mrk rose 102 to 8240 and abbvie inc abbv rose 097 to 16375 trading volume 86 m remained 35 million below its 50day average volume of 121 m editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use