Capital World Investors Trims Stake in Quanta Services

Institutional investor reduces position in construction and infrastructure company

Published on Mar. 10, 2026

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Capital World Investors, a major institutional investor, has trimmed its stake in Quanta Services, Inc. (NYSE:PWR) by 18.9% in the third quarter, according to a recent SEC filing. The firm still holds a significant position of 6,821,846 shares, representing approximately 4.57% ownership of the construction company.

Why it matters

Quanta Services is a leading specialty contractor providing infrastructure solutions for the electric power, pipeline, energy, and communications markets. Institutional investor activity in the company's stock can signal broader market trends and investor sentiment around the construction and infrastructure sectors.

The details

According to the 13F filing, Capital World Investors sold 1,585,509 shares of Quanta Services during the third quarter, reducing its total position to 6,821,846 shares. The firm remains one of the largest institutional shareholders, owning approximately 4.57% of the company's outstanding stock valued at $2.83 billion.

  • Capital World Investors trimmed its Quanta Services position in the third quarter of 2026.

The players

Capital World Investors

A major institutional investment firm that manages a diversified portfolio of stocks, including a significant stake in Quanta Services.

Quanta Services, Inc.

A leading specialty contractor that provides comprehensive infrastructure solutions for the electric power, pipeline, energy, and communications markets.

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The takeaway

The reduction in Capital World Investors' Quanta Services position, while still maintaining a sizable stake, could signal broader market trends and investor sentiment around the construction and infrastructure sectors. Quanta's diverse service offerings and exposure to key industries make it an important player to watch in the infrastructure space.