shares of gilead sciences inc gild shed 135 to 8350 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 016 to 399105 and dow jones industrial average djia falling 026 to 3304509 this was the stocks second consecutive day of losses gilead sciences inc closed 624 below its 52week high 8974 which the company reached on december 13th the stock underperformed when compared to some of its competitors wednesday as johnson  johnson jnj fell 014 to 15778 pfizer inc pfe fell 075 to 4238 and abbott laboratories abt fell 093 to 10269 trading volume 50 m remained 20 million below its 50day average volume of 70 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