shares of regeneron pharmaceuticals inc regn shed 111 to 72317 friday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 111 to 385236 and dow jones industrial average djia falling 085 to 3292046 this was the stocks second consecutive day of losses regeneron pharmaceuticals inc closed 5583 short of its 52week high 77900 which the company achieved on december 8th the stock demonstrated a mixed performance when compared to some of its competitors friday as amgen inc amgn rose 048 to 26741 moderna inc mrna fell 674 to 19329 and gilead sciences inc gild rose 021 to 8676 trading volume 18 m eclipsed its 50day average volume of 671453 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