Shares of Align Technology Inc.
ALGN,
-1.36%
slid 1.36% to $589.61 Friday, on what proved to be an all-around great trading session for the stock market, with the S&P 500 Index
SPX,
+0.75%
rising 0.75% to 4,471.37 and the Dow Jones Industrial Average
DJIA,
+1.09%
rising 1.09% to 35,294.76. Align Technology Inc. closed $147.84 short of its 52-week high ($737.45), which the company reached on September 23rd.

The stock underperformed when compared to some of its competitors Friday, as Danaher Corp.
DHR,
+0.32%
rose 0.32% to $301.38, 3M Co.
MMM,
+0.90%
rose 0.90% to $181.94, and Dentsply Sirona Inc.
XRAY,
+1.58%
rose 1.58% to $57.85. Trading volume (741,246) eclipsed its 50-day average volume of 497,887.