shares of zions bancorp na zion slipped 143 to 2897 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 073 to 411524 and dow jones industrial average djia falling 077 to 3279992 zions bancorp na closed 3078 short of its 52week high 5975 which the company achieved on september 15th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as wells fargo  co wfc fell 083 to 4087 us bancorp usb fell 106 to 3081 and citizens financial group inc cfg fell 337 to 2693 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