shares of regeneron pharmaceuticals inc regn slumped 073 to 73608 tuesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 001 to 3385253 and the sp 500 index spx falling 016 to 395763 the stocks fall snapped a twoday winning streak regeneron pharmaceuticals inc closed 3355 short of its 52week high 76963 which the company achieved on november 9th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as amgen inc amgn fell 022 to 28199 moderna inc mrna fell 127 to 17315 and gilead sciences inc gild rose 065 to 8576 trading volume 515102 remained 187640 below its 50day average volume of 702742 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