shares of regeneron pharmaceuticals inc regn shed 183 to 63557 wednesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 107 to 440027 and dow jones industrial average djia falling 108 to 3496069 the stocks fall snapped a threeday winning streak regeneron pharmaceuticals inc closed 1443 short of its 52week high 65000 which the company achieved on august 17th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as johnson  johnson jnj fell 127 to 17719 novartis ag adr nvs fell 179 to 9344 and amgen inc amgn fell 189 to 22684 trading volume 16 m eclipsed its 50day average volume of 744461 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