Mastec Inc (MTZ) Institutional Ownership

Ownership Summary

Mastec Inc (NYSE:MTZ) showed up in the 13F filings of 785 institutional investors as of March 2026.

• These investors held 74.4% of outstanding shares in March 2026, down from 77.7% in December 2025.
• They increased total shares held in Mastec by 9.95% from last quarter, and the number of investors in MTZ increased 48.96% annually.
• Of these 785 funds, 425 grew their exposure to Mastec, 258 cut back, and 102 maintained positions.
• Altogether, these fund groups held 57.98Mn shares in MTZ by March 2026, up by 5.25Mn shares quarter on quarter, and down 3.72Mn shares year over year.
• BlackRock, Inc. holds the largest position in MTZ at 7.31Mn shares as of March 31, 2026, or 9.38% of shares outstanding.
• The largest buyers of Mastec for the quarter ending March 2026 were VANGUARD CAPITAL MANAGEMENT LLC (2.8Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.77Mn), PECONIC PARTNERS LLC (1.98Mn), LONE PINE CAPITAL LLC (1.53Mn), CANADA PENSION PLAN INVESTMENT BOARD (488.85K).
• The largest sellers of Mastec for the quarter ending March 2026 were VICTORY CAPITAL MANAGEMENT INC (1.04Mn), Electron Capital Partners, LLC (895.59K), COATUE MANAGEMENT LLC (772.22K), Third Point LLC (605.0K), JACOBS LEVY EQUITY MANAGEMENT, INC (596.91K).
• According to Business Quant data, leading holders of MTZ for March 2026 are BlackRock, Inc. (7.31Mn), PECONIC PARTNERS LLC (3.58Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.8Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (2.77Mn), Hill City Capital, LP (2.15Mn), State Street Corp (1.87Mn), VICTORY CAPITAL MANAGEMENT INC (1.59Mn), LONE PINE CAPITAL LLC (1.53Mn), FIRST TRUST ADVISORS LP (1.41Mn), GEODE CAPITAL MANAGEMENT, LLC (1.37Mn).