shares of public storage psa inched 018 higher to 30826 tuesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 058 to 410060 and dow jones industrial average djia falling 059 to 3340238 this was the stocks fifth consecutive day of gains public storage closed 11350 short of 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 366 to 16017 and cubesmart cube rose 059 to 4775 trading volume 19 m eclipsed its 50day average volume of 11 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