shares of iron mountain inc irm inched 040 higher to 5226 tuesday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 168 to 392056 and the dow jones industrial average djia rising 106 to 3215540 iron mountain inc closed 635 below its 52week high 5861 which the company achieved on april 21st the stock demonstrated a mixed performance when compared to some of its competitors tuesday as prologis inc pld rose 123 to 11983 international business machines corp ibm fell 074 to 12465 and digital realty trust inc dlr rose 095 to 10570 trading volume 17 m eclipsed its 50day average volume of 15 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