shares of regeneron pharmaceuticals inc regn slipped 225 to 67482 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 281 to 417520 and dow jones industrial average djia falling 238 to 3324018 regeneron pharmaceuticals inc closed 7260 below its 52week high 74742 which the company reached on april 8th the stock underperformed when compared to some of its competitors tuesday as johnson  johnson jnj fell 072 to 18468 novartis ag adr nvs fell 164 to 8896 and amgen inc amgn fell 091 to 24987 trading volume 537952 remained 118076 below its 50day average volume of 656028 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