shares of public storage psa inched 025 higher to 29160 tuesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 020 to 399097 and dow jones industrial average djia falling 114 to 3391085 public storage closed 13016 below its 52week high 42176 which the company reached on april 21st the stock underperformed when compared to some of its competitors tuesday as extra space storage inc exr rose 079 to 15310 and cubesmart cube rose 161 to 4239 trading volume 756353 remained 137663 below its 50day average volume of 894016 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