shares of vertex pharmaceuticals inc vrtx dropped 057 to 25652 wednesday on what proved to be an allaround rough 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 fourday winning streak vertex pharmaceuticals inc closed 173 below its 52week high 25825 which the company reached on march 28th 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 10 m remained 684581 below its 50day average volume of 17 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