shares of ppg industries inc ppg shed 134 to 13889 friday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 077 to 434833 and dow jones industrial average djia falling 065 to 3372743 this was the stocks second consecutive day of losses ppg industries inc closed 662 below its 52week high 14551 which the company achieved on april 24th the stock underperformed when compared to some of its competitors friday as 3m co mmm rose 029 to 10072 and sherwinwilliams co shw rose 031 to 24704 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