Quanta Services is trading at $660.92, down 4.06%, during the October 14, 2026 session amid broader market pressure after September inflation came in hotter than forecast, lifting Treasury yields and reviving expectations of Fed tightening.

  • The S&P 500 was down 0.98% and the Nasdaq was down 1.36%.
  • No clear company-specific announcement explaining the move was found.
  • Quanta Services’ Q3 release schedule is not a new earnings result.