Dimensional Fund Advisors Trims Stake in MasTec

Institutional investor reduces position in construction company by 15.4%

Published on Mar. 9, 2026

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Dimensional Fund Advisors LP has reduced its stake in MasTec, Inc. (NYSE:MTZ) by 15.4%, selling 170,394 shares in the third quarter according to a recent 13F filing with the SEC. The fund now owns 935,004 shares, or approximately 1.19% of the construction company's stock.

Why it matters

This move by a major institutional investor like Dimensional Fund Advisors could signal a shift in sentiment around MasTec, which has seen its stock price rise significantly over the past year. Institutional ownership changes are closely watched by investors and analysts as they can provide insights into the market's view of a company's prospects.

The details

Dimensional Fund Advisors sold the 170,394 shares of MasTec during the third quarter, reducing its total position to 935,004 shares. This represents approximately 1.19% of MasTec's outstanding stock. The sale comes as MasTec has seen its share price rise over the past year, driven by strong financial results and growing demand for the company's infrastructure and energy-related services.

  • Dimensional Fund Advisors sold the shares in the third quarter of the year.

The players

Dimensional Fund Advisors LP

A global investment management firm that provides a range of equity, fixed income, and alternative investment strategies.

MasTec, Inc.

A diversified infrastructure construction company that provides engineering, fabrication, installation, and maintenance services across various end markets, including communications, oil and gas, electrical transmission and distribution, and renewable energy.

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The takeaway

The reduction in Dimensional Fund Advisors' stake in MasTec could signal a shift in sentiment around the company, as institutional investors closely monitor changes in ownership. However, MasTec's strong financial performance and growing demand for its services suggest the company remains an attractive investment opportunity for many investors.