shares of zions bancorp na zion slid 376 to 5331 monday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 089 to 395725 and dow jones industrial average djia falling 063 to 3353670 the stocks fall snapped a twoday winning streak zions bancorp na closed 2213 below its 52week high 7544 which the company reached on february 10th the stock demonstrated a mixed performance when compared to some of its competitors monday as us bancorp usb fell 238 to 4385 and western alliance bancorp wal fell 416 to 7345 trading volume 18 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