Mastec, Inc. · NYSE:MTZ
Mastec, Inc. shareholders
As of Jun 30, 2026, 889 institutions reported holding Mastec, Inc., 74.2% of its shares. Largest: BlackRock, Vanguard and Peconic Partners LLC. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Mastec, Inc. | Change | Filed |
|---|---|---|---|---|
| BlackRock | 7.64M | 9.5% | +329K | Aug 7, 2026 |
| Vanguard | 6.13M | 7.6% | +73,115 | Aug 13, 2026 |
| Peconic Partners LLC | 3.68M | 4.6% | +100K | Aug 14, 2026 |
| State Street | 2.24M | 2.8% | +375K | Aug 7, 2026 |
| Hill City Capital, LP | 2.15M | 2.7% | no change | Aug 17, 2026 |
| Lone Pine Capital LLC | 1.35M | 1.7% | −186K | Aug 14, 2026 |
| Bank of America | 1.34M | 1.7% | +5,858 | Aug 14, 2026 |
| First Trust | 1.33M | 1.7% | −83,185 | Aug 11, 2026 |
| JPMorgan | 1.32M | 1.6% | +1.12M | Aug 12, 2026 |
| Geode Capital | 1.28M | 1.6% | −93,770 | Aug 12, 2026 |