Lansing Street Advisors Trims MasTec Stock Holdings

Investment firm reduces stake in construction company by 18.6% in Q3

Published on Feb. 27, 2026

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Lansing Street Advisors, a major investor in MasTec, Inc. (NYSE:MTZ), reduced its holdings in the construction company's stock by 18.6% in the third quarter, according to a recent SEC filing. The firm now owns 8,761 shares of MasTec, worth $1.864 million at the end of the quarter.

Why it matters

MasTec is a diversified infrastructure construction company that has grown through strategic acquisitions to become one of the largest contractors in North America. Changes in major investor holdings can signal shifts in market sentiment around the company.

The details

Lansing Street Advisors sold 2,000 shares of MasTec stock during the third quarter, reducing its total position to 8,761 shares. The firm's holdings were valued at $1.864 million at the end of the quarter. Other large investors have also been active in MasTec stock, with some increasing and others decreasing their positions.

  • Lansing Street Advisors filed its most recent 13F report covering the third quarter of 2026.

The players

Lansing Street Advisors

A major investment firm that reduced its stake in construction company MasTec, Inc. by 18.6% in the third quarter of 2026.

MasTec, Inc.

A diversified infrastructure construction company that provides engineering, fabrication, installation and maintenance services across a broad range of end markets, including communications networks, oil and gas pipelines, electrical transmission and distribution, and renewable energy projects.

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The takeaway

The reduction in Lansing Street Advisors' MasTec holdings suggests a potential shift in market sentiment around the construction company, though the reasons behind the firm's decision are not entirely clear. Investors will likely continue to monitor changes in major shareholder positions as they assess the company's prospects.