shares of quanta services inc pwr slipped 092 to 16140 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 030 to 397015 and dow jones industrial average djia falling 071 to 3265670 the stocks fall snapped a threeday winning streak quanta services inc closed 735 short of its 52week high 16875 which the company achieved on february 23rd the stock underperformed when compared to some of its competitors tuesday as aecom acm fell 047 to 8636 mastec inc mtz rose 109 to 9772 and emcor group inc eme rose 071 to 16722 trading volume 12 m eclipsed its 50day average volume of 966923 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