shares of quanta services inc pwr shed 180 to 12355 tuesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 038 to 373548 and dow jones industrial average djia falling 050 to 3036483 this was the stocks third consecutive day of losses quanta services inc closed 1649 short of its 52week high 14004 which the company achieved on april 20th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as emcor group inc eme fell 057 to 10057 mastec inc mtz fell 250 to 7697 and dycom industries inc dy fell 175 to 9049 trading volume 15 m remained 283333 below its 50day average volume of 18 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