shares of zions bancorp na zion dropped 047 to 5102 monday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 008 to 389209 and dow jones industrial average djia falling 034 to 3351765 zions bancorp na closed 2442 short of its 52week high 7544 which the company achieved on february 10th the stock demonstrated a mixed performance when compared to some of its competitors monday as wells fargo  co wfc fell 096 to 4239 us bancorp usb rose 065 to 4661 and citizens financial group inc cfg fell 130 to 4110 trading volume 902684 remained 438716 below its 50day average volume of 13 m 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