Mastec Inc (NYSE:MTZ) appears in 676 institutional 13F filings for the quarter ending December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| BlackRock, Inc. | 31 Mar, 2026 | 7,309,609 | 198,355 | 2.79% | $2,351,793,580.00 |
| BlackRock, Inc. | 31 Mar, 2026 | 7,111,254 | -632,111 | -8.16% | $1,545,773,337.00 |
| VANGUARD GROUP INC | 31 Mar, 2026 | 5,932,754 | -74,438 | -1.24% | $1,289,602,736.00 |
| PECONIC PARTNERS LLC | 31 Mar, 2026 | 3,578,431 | 1,978,431 | 123.65% | $1,151,324,390.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 2,804,295 | 2,804,295 | 0.00% | $902,253,873.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Mar, 2026 | 2,770,038 | 2,770,038 | 0.00% | $891,232,026.00 |
| VICTORY CAPITAL MANAGEMENT INC | 31 Mar, 2026 | 2,637,451 | 1,690,896 | 178.64% | $573,304,252.00 |
| Hill City Capital, LP | 31 Mar, 2026 | 2,155,000 | 0 | 0.00% | $693,349,700.00 |
| Hill City Capital, LP | 31 Mar, 2026 | 2,155,000 | 0 | 0.00% | $468,432,350.00 |
| State Street Corp | 31 Mar, 2026 | 1,869,788 | 43,366 | 2.37% | $601,585,591.00 |
| State Street Corp | 31 Mar, 2026 | 1,826,422 | -10,729 | -0.58% | $397,009,350.00 |
| Electron Capital Partners, LLC | 31 Mar, 2026 | 1,608,606 | 789,515 | 96.39% | $349,662,686.00 |
| PECONIC PARTNERS LLC | 31 Mar, 2026 | 1,600,000 | 850,000 | 113.33% | $347,792,000.00 |
| VICTORY CAPITAL MANAGEMENT INC | 31 Mar, 2026 | 1,592,523 | -1,044,928 | -39.62% | $512,381,476.00 |
| LONE PINE CAPITAL LLC | 31 Mar, 2026 | 1,531,050 | 1,531,050 | 0.00% | $492,600,027.00 |
| Invesco Ltd. | 31 Mar, 2026 | 1,520,030 | -144,371 | -8.67% | $330,408,916.00 |
| Hood River Capital Management LLC | 31 Mar, 2026 | 1,483,661 | -162,764 | -9.89% | $322,503,392.00 |
| FIRST TRUST ADVISORS LP | 31 Mar, 2026 | 1,411,584 | 100,151 | 7.64% | $454,162,810.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 1,371,909 | 151,206 | 12.39% | $441,485,062.00 |
| Bank Of America Corp /De/ | 31 Mar, 2026 | 1,330,066 | 75,100 | 5.98% | $427,935,435.00 |