shares of align technology inc algn slipped 194 to 24419 monday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 069 to 389989 and the dow jones industrial average djia rising 064 to 3101968 this was the stocks second consecutive day of losses align technology inc closed 49326 below its 52week high 73745 which the company achieved on september 23rd the stock underperformed when compared to some of its competitors monday as danaher corp dhr rose 068 to 27894 3m co mmm rose 003 to 11664 and dentsply sirona inc xray fell 047 to 3190 trading volume 798741 remained 9062 below its 50day average volume of 807803 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