shares of align technology inc algn shed 401 to 30400 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 200 to 399734 and dow jones industrial average djia falling 206 to 3312959 this was the stocks third consecutive day of losses align technology inc closed 20912 short of its 52week high 51312 which the company achieved on february 28th trading volume 917008 remained 208143 below 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