shares of align technology inc algn inched 065 higher to 21228 tuesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 040 to 382414 and dow jones industrial average djia falling 003 to 3313637 align technology inc closed 43991 short of its 52week high 65219 which the company achieved on january 4th 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