Banco Santander Increases Stake in MasTec

Banco Santander S.A. grows its position in construction company MasTec, Inc. by 16.8% in the third quarter.

Published on Feb. 28, 2026

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Banco Santander S.A. has increased its stake in MasTec, Inc. (NYSE:MTZ), a construction company, by 16.8% in the third quarter. The bank now owns 57,877 shares of the company's stock, valued at $12.32 million. This move comes as MasTec's stock price has risen significantly over the past year, reaching a 52-week high of $300.

Why it matters

Banco Santander's increased investment in MasTec signals the bank's confidence in the construction company's growth potential. MasTec's diverse infrastructure projects, including communications networks, oil and gas pipelines, and renewable energy, have contributed to its strong financial performance and stock price appreciation.

The details

According to the filing with the Securities and Exchange Commission (SEC), Banco Santander acquired an additional 8,311 shares of MasTec during the third quarter, bringing its total stake to 57,877 shares. This represents a 16.8% increase in the bank's position in the construction company. MasTec's stock has been on a steady rise, reaching a 52-week high of $300 on February 28, 2026.

  • Banco Santander increased its stake in MasTec during the third quarter of the year.
  • MasTec's stock price reached a 52-week high of $300 on February 28, 2026.

The players

Banco Santander S.A.

A multinational Spanish banking and financial services company that is one of the largest banks in the world.

MasTec, Inc.

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

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The takeaway

Banco Santander's increased investment in MasTec reflects the bank's confidence in the construction company's growth potential, particularly in its diverse infrastructure projects and strong financial performance. This move highlights the continued investor interest in MasTec's stock as the company navigates the evolving infrastructure landscape.