shares of align technology inc algn slipped 395 to 21033 monday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 089 to 395725 and dow jones industrial average djia falling 063 to 3353670 the stocks fall snapped a twoday winning streak align technology inc closed 48848 short of its 52week high 69881 which the company achieved on november 17th the stock demonstrated a mixed performance when compared to some of its competitors monday as danaher corp dhr fell 158 to 26672 3m co mmm fell 147 to 13103 and dentsply sirona inc xray fell 530 to 3035 trading volume 13 m eclipsed its 50day average volume of 11 m 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