Quanta Services Inc. Stock Falls 11.7%, Underperforms Market

This article was automatically generated by Dow Jones using technology from Automated Insights.

Shares of Quanta Services Inc. tumbled 11.7% to $580.44 on what proved to be an all-around favorable trading session for the stock market, with the S&P 500 Index rising 1.6% to 7,688.62 and the Dow Jones Industrial Average rising 3.0% to 53,356.12.

The stock's fall snapped a two-day winning streak.

Quanta Services Inc. closed 26.4% below its 52-week high of $788.75, which the company achieved on May 6th.

The stock demonstrated a mixed performance when compared to some of its peers, as AECOM rose 2.9% to $68.20, MasTec Inc. fell 15.4% to $167.61, and EMCOR Group Inc. fell 9.64% to $639.25.

Trading volume totaled 3.3 million, compared to the 50-day average of 1.1 million.

Data source: Dow Jones Market Data, FactSet

(END) Dow Jones Newswires

November 04, 2026 16:34 ET (21:34 GMT)