shares of zions bancorp na zion slid 733 to 4842 monday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 179 to 399884 and dow jones industrial average djia falling 140 to 3394710 the stocks fall snapped a fourday winning streak zions bancorp na closed 2702 below its 52week high 7544 which the company reached on february 10th the stock underperformed when compared to some of its competitors monday as wells fargo  co wfc fell 496 to 4366 us bancorp usb fell 379 to 4391 and citizens financial group inc cfg fell 532 to 3948 trading volume 23 m eclipsed its 50day average volume of 15 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