Shares of Iron Mountain Inc. /zigman2/quotes/208929343/composite IRM +1.31% inched 0.02% higher to $44.79 Thursday, on what proved to be an all-around great trading session for the stock market, with the S&P 500 Index /zigman2/quotes/210599714/realtime SPX +0.37% rising 1.21% to 4,448.98 and the Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA +0.43% rising 1.48% to 34,764.82. This was the stock's third consecutive day of gains. Iron Mountain Inc. closed $4.79 short of its 52-week high ($49.58), which the company reached on September 3rd.
The stock underperformed when compared to some of its competitors Thursday, as Fiserv Inc. /zigman2/quotes/204817680/composite FISV -1.06% rose 1.43% to $110.24, Automatic Data Processing Inc. /zigman2/quotes/207661132/composite ADP -0.43% rose 1.55% to $201.39, and Equifax Inc. /zigman2/quotes/208789454/composite EFX -1.26% rose 0.93% to $265.12. Trading volume (1.6 M) eclipsed its 50-day average volume of 1.4 M.