shares of iron mountain inc irm slipped 051 to 5315 thursday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 099 to 422102 and the dow jones industrial average djia rising 047 to 3306157 iron mountain inc closed 406 below its 52week high 5721 which the company achieved on february 2nd the stock demonstrated a mixed performance when compared to some of its competitors thursday as prologis inc pld fell 153 to 12264 international business machines corp ibm rose 096 to 12982 and digital realty trust inc dlr rose 226 to 10478 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