shares of public storage psa slipped 049 to 30087 wednesday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 014 to 399201 and the dow jones industrial average djia falling 018 to 3279840 this was the stocks second consecutive day of losses public storage closed 12089 below its 52week high 42176 which the company achieved on april 21st the stock underperformed when compared to some of its competitors wednesday as extra space storage inc exr fell 002 to 16374 and cubesmart cube remained unchanged trading volume 675472 remained 305887 below its 50day average volume of 981359 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