shares of public storage psa inched 023 higher to 28950 tuesday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 115 to 437841 and the dow jones industrial average djia rising 063 to 3392674 this was the stocks third consecutive day of gains public storage closed 6763 below its 52week high 35713 which the company reached on august 18th the stock underperformed when compared to some of its competitors tuesday as extra space storage inc exr rose 097 to 14713 and cubesmart cube rose 235 to 4523 trading volume 808124 remained 141716 below its 50day average volume of 949840 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