shares of mt bank corp mtb slumped 064 to 16952 monday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 039 to 394994 and dow jones industrial average djia falling 013 to 3370028 mt bank corp closed 2390 short of its 52week high 19342 which the company reached on august 16th the stock underperformed when compared to some of its competitors monday as bank of america corp bac rose 032 to 3731 wells fargo  co wfc rose 073 to 4684 and pnc financial services group inc pnc rose 093 to 16266 trading volume 11 m remained 301166 below its 50day average volume of 14 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