shares of quanta services inc pwr slipped 134 to 15510 friday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 110 to 391664 and dow jones industrial average djia falling 119 to 3186198 quanta services inc closed 1365 below its 52week high 16875 which the company reached on february 23rd the stock demonstrated a mixed performance when compared to some of its competitors friday as aecom acm fell 132 to 8236 mastec inc mtz fell 222 to 8709 and emcor group inc eme fell 009 to 16040 trading volume 16 m eclipsed its 50day average volume of 950837 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