shares of public storage psa slumped 085 to 27935 tuesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 020 to 3563068 and the sp 500 index spx falling 027 to 457673 public storage closed 7778 below its 52week high 35713 which the company achieved on august 18th despite its losses the stock outperformed some of its competitors tuesday as extra space storage inc exr fell 144 to 13756 and cubesmart cube fell 148 to 4272 trading volume 578319 remained 306619 below its 50day average volume of 884938 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