shares of public storage psa slid 019 to 28710 friday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 037 to 440959 and dow jones industrial average djia falling 032 to 3429912 public storage closed 7003 below its 52week high 35713 which the company reached on august 18th the stock demonstrated a mixed performance when compared to some of its competitors friday as extra space storage inc exr fell 034 to 14528 and cubesmart cube rose 034 to 4463 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