Union Bancaire Privee Boosts MasTec Stake by 192%

The Swiss private bank increased its holdings in the construction company during Q4 2025.

Mar. 21, 2026 at 11:44am

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Union Bancaire Privee UBP SA, a Swiss private bank, increased its stake in MasTec, Inc. (NYSE:MTZ) by 192.1% in the fourth quarter of 2025, according to a recent 13F filing with the Securities and Exchange Commission. The firm now owns 14,046 shares of the construction company's stock, up from 4,808 shares previously.

Why it matters

MasTec is a major infrastructure construction company that has seen growing institutional investor interest as it expands its work in areas like communications networks, oil and gas pipelines, and renewable energy projects. Union Bancaire Privee's increased stake suggests the bank sees further upside potential in MasTec's business.

The details

According to the 13F filing, Union Bancaire Privee UBP SA bought an additional 9,238 shares of MasTec during the fourth quarter, bringing its total position to 14,046 shares worth approximately $3.05 million. The bank's holdings now represent a 192.1% increase from the prior quarter.

  • Union Bancaire Privee UBP SA filed the 13F report disclosing the increased MasTec stake on March 21, 2026.
  • The bank boosted its MasTec holdings during the fourth quarter of 2025.

The players

Union Bancaire Privee UBP SA

A Swiss private bank that manages assets for high-net-worth individuals and institutional clients.

MasTec, Inc.

A diversified infrastructure construction company that provides engineering, fabrication, installation and maintenance services across a range of end markets.

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The takeaway

Union Bancaire Privee's increased stake in MasTec suggests the bank sees further growth potential in the infrastructure construction company as it expands its work in areas like communications, energy, and renewables. This reflects broader institutional investor interest in MasTec as a play on the ongoing buildout of critical U.S. infrastructure.