shares of align technology inc algn rallied 474 to 20767 friday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 237 to 375275 and the dow jones industrial average djia rising 247 to 3108256 the stocks rise snapped a threeday losing streak align technology inc closed 50566 below its 52week high 71333 which the company reached on november 9th the stock outperformed some of its competitors friday as danaher corp dhr rose 062 to 24459 3m co mmm rose 327 to 11681 and dentsply sirona inc xray rose 147 to 2906 trading volume 12 m eclipsed its 50day average volume of 809257 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