Mastec Inc
MTZ- Exchange
- NYSE
- Industry
- Water, Sewer, Pipeline, Comm & Power Line Construction
- SEC CIK
- 0000015615
No open-market purchases or sales by Mastec Inc insiders were filed in the last 90 days; 911 institutions reported holding it in 13F filings for Q2 2026, worth $24.8B in total; 4 superinvestors hold it, including Lone Pine Capital and Coatue Management.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +110 vs. previous quarter
- 911
- 13F valueReported value at the end of Q2 2026
- $24.8B
- Superinvestors holdingAt the end of Q2 2026
- 4
Price chart
Superinvestors holding MTZ, Q2 2026
4 superinvestors report holding Mastec Inc on Form 13F. Percentages are the stock's share of each portfolio.
| Superinvestor | Weight | Value |
|---|---|---|
| Third Point | 2.6% | $120.7M |
| Soros Fund Management | <0.1% | $3.44M |
Latest insider trades
Open-market purchases and sales by Mastec Inc insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 5, 2026 (view filing) | Jun 3 | 2 days | Csiszar Ernst NDirector | SSale | −6.50K | $371.17 | −$2.41M | −37.5%10.8K after | |
| May 6, 2026 (view filing) | May 4 | 2 days | Campbell C RobertDirector | SSale | −3.00K | $417.00 | −$1.25M | −8.9%30.6K after | |
| Mar 27, 2026 (view filing) | Mar 25 | 2 days | Palomarez Javier AlbertoDirector | SSale | −950 | $325.43 | −$309.2K | −8.2%10.6K after | |
| Mar 5, 2026 (view filing) | Mar 3 | 2 days | Csiszar Ernst NDirector | SSale | −6.50K | $300.40 | −$1.95M | −27.4%17.2K after | |
| Nov 5, 2025 (view filing) | Nov 3 | 2 days | Love Timothy MichaelCAO | SSale | −1.93K | $206.15 | −$397.7K | −16.5%9.76K after | |
| Oct 1, 2025 (view filing) | Sep 29 | 2 days | Campbell C RobertDirector | SSale | −2.00K | $210.39 | −$420.8K | −5.7%33.3K after | |
| Sep 22, 2025 (view filing) | Sep 18 | 4 days | Apple Robert ECOO | SSale | −10.0K | $200.44 | −$2.00M | −5.1%184.2K after | 2 lots10b5-1 |
| Sep 16, 2025 (view filing) | Sep 11 | 5 daysLate | Campbell C RobertDirector | SSale | −3.00K | $190.39 | −$571.2K | −7.8%35.3K after | |
| Aug 7, 2025 (view filing) | Aug 5 | 2 days | de Cardenas AlbertoEVP, General Counsel | SSale | −10.0K | $180.70 | −$1.81M | −9.0%101.3K after | 2 lots |
| Jul 18, 2025 (view filing) | Jul 16 | 2 days | Apple Robert ECOO | SSale | −10.0K | $175.00 | −$1.75M | −4.9%194.2K after | 10b5-1 |
Top 10 13F holders, Q2 2026
The largest institutional positions in Mastec Inc at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 7,638,487 | $3.18B | 0.05% | +328,878+4.5% | Added |
| Peconic Partners LLC | 3,678,431 | $1.53B | 20.35% | +100,000+2.8% | Added |
| Vanguard Capital Management LLC | 2,831,849 | $1.18B | 0.03% | +27,554+1.0% | Added |
| Vanguard Portfolio Management LLC | 2,812,131 | $1.17B | 0.05% | +42,093+1.5% | Added |
| State Street Corp | 2,244,771 | $934.0M | 0.03% | +374,983+20.1% | Added |
| Hill City Capital, LP | 2,155,000 | $896.6M | 20.94% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 1,318,161 | $566.8M | 0.03% | +1,116,159+552.5% | Added |
| Lone Pine Capital LLCSuperinvestorLone Pine Capital | 1,345,157 | $559.7M | 3.42% | −185,893−12.1% | Reduced |
| Bank of America Corp | 1,335,924 | $555.8M | 0.04% | +5,858+0.4% | Added |
| First Trust Advisors LP | 1,328,399 | $552.7M | 0.33% | −83,185−5.9% | Reduced |