Quanta Services is trading at $688.40, up 8.95%, with no verified company-specific announcement explaining its pre-market rise.
- The latest company release found schedules third-quarter results for October 29, not October 19.
- The supplied S&P 500 and Nasdaq readings are up 0.56% and 1.12%; gains may be supportive but do not establish the cause of Quanta’s larger move.
- Volume and trading activity details were unavailable.