shares of quanta services inc pwr slipped 008 to 19827 thursday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 085 to 451004 and the dow jones industrial average djia rising 014 to 3439514 this was the stocks second consecutive day of losses quanta services inc closed 422 short of its 52week high 20249 which the company reached on july 12th the stock underperformed when compared to some of its competitors thursday as aecom acm rose 082 to 8761 mastec inc mtz rose 195 to 11690 and emcor group inc eme rose 004 to 18764 trading volume 534384 remained 326202 below its 50day average volume of 860586 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