MasTec, Inc. (MTZ) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for MTZ. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 896 institutions reported holding MTZ, with 58.9 million shares worth $24.5 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| BlackRock | 7,638,487 | $3.2B | INCREASED |
| Vanguard | 6,127,946 | $2.5B | INCREASED |
| Peconic Partners | 3,678,431 | $1.5B | INCREASED |
| State Street | 2,244,771 | $934M | INCREASED |
| Hill City Capital | 2,155,000 | $897M | UNCHANGED |
Recent Congressional Trades
| Member | Type | Amount | Date |
|---|---|---|---|
| Thomas H. Kean, Jr. (Republican) | PURCHASE | $1,001 - $15,000 | 2026-08-21 |
Full institutional holdings, insider history, and congressional trades for MasTec, Inc. on SentiSense.