shares of regeneron pharmaceuticals inc regn sank 050 to 82209 tuesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 058 to 410060 and dow jones industrial average djia falling 059 to 3340238 the stocks fall snapped a twoday winning streak regeneron pharmaceuticals inc closed 1291 below its 52week high 83500 which the company reached on march 29th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as amgen inc amgn rose 126 to 24753 moderna inc mrna fell 186 to 15652 and gilead sciences inc gild fell 135 to 8212 trading volume 397819 remained 241249 below its 50day average volume of 639068 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