shares of quanta services inc pwr were unchanged wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 015 to 434993 and dow jones industrial average djia falling 038 to 3416809 quanta services inc closed 2763 short of its 52week high 12469 which the company achieved on november 8th the stock outperformed some of its competitors wednesday as emcor group inc eme fell 050 to 11635 mastec inc mtz fell 123 to 8649 and dycom industries inc dy fell 144 to 8301 trading volume 11 m eclipsed its 50day average volume of 10 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