shares of ppg industries inc ppg shed 197 to 13459 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 ppg industries inc closed 4273 below its 52week high 17732 which the company achieved on january 5th the stock underperformed when compared to some of its competitors monday as 3m co mmm fell 186 to 12463 and sherwinwilliams co shw fell 161 to 25359 trading volume 924315 remained 469610 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