shares of quanta services inc pwr dropped 035 to 13864 monday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 008 to 389209 and dow jones industrial average djia falling 034 to 3351765 quanta services inc closed 1636 short of its 52week high 15500 which the company reached on december 13th the stock demonstrated a mixed performance when compared to some of its competitors monday as aecom acm fell 130 to 8207 mastec inc mtz rose 260 to 9400 and emcor group inc eme fell 176 to 14504 trading volume 815818 remained 115456 below its 50day average volume of 931274 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