Security record · archived quarter
MTZ
MasTec, Inc. · Industrials · Engineering & Construction
18Tracked holders
+2Δ holders
21.57MShares held
$3.68BReported value
+2New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +12.5% ·
share flow +6.2% ·
net new positions +11.1%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 152 | 0 | 38.87M | $16.18B | +9 | −8 |
| Q1 2026 | 154 | +7 | 37.61M | $12.07B | +11 | −5 |
| Q4 2025 | 146 | +4 | 41.17M | $8.95B | +5 | — |
| Q3 2025 | 18 | -2 | 22.22M | $4.73B | +1 | −4 |
| Q2 2025 | 18 | +2 | 21.57M | $3.68B | +2 | — |
| Q1 2025 | 13 | -1 | 6.17M | $714.27M | — | −1 |
| Q4 2024 | 14 | +2 | 7.54M | $1.03B | +2 | — |
| Q3 2024 | 11 | 0 | 5.95M | $732.85M | — | — |
| Q2 2024 | 11 | — | 5.85M | $625.58M | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 8.16M | — | $1.39B | 0.0% | n/c | 1 | SEC ↗ |
| 21 | The Vanguard Group ✦ (passive) | 5.97M | — | $1.02B | 0.0% | n/c | 1 | SEC ↗ |
| 22 | The Vanguard Group ✦ (passive) | 5.97M | — | $1.02B | 0.0% | n/c | 1 | SEC ↗ |
| 23 | The Vanguard Group ✦ (passive) | 5.97M | — | $1.02B | 0.0% | n/c | 1 | SEC ↗ |
| 24 | The Vanguard Group ✦ (passive) | 5.97M | — | $1.02B | 0.0% | n/c | 1 | SEC ↗ |
| 25 | The Vanguard Group ✦ (passive) | 5.97M | — | $1.02B | 0.0% | n/c | 1 | SEC ↗ |
| 26 | State Street Global Advisors ✦ (passive) | 1.87M | -2.3% | $319.31M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 27 | Geode Capital Management ✦ (passive) | 1.10M | -0.3% | $187.89M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 28 | Geode Capital Management ✦ (passive) | 1.10M | -0.3% | $187.89M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 29 | Millennium Management ✦ | 1.08M | +13.9% | $183.69M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 30 | AQR Capital Management ✦ | 1.07M | +11.3% | $181.96M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 31 | AQR Capital Management ✦ | 1.07M | +11.3% | $181.96M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 32 | AQR Capital Management ✦ | 1.07M | +11.3% | $181.96M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 33 | AQR Capital Management ✦ | 1.07M | +11.3% | $181.96M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 34 | AQR Capital Management ✦ | 1.07M | +11.3% | $181.96M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 35 | AQR Capital Management ✦ | 1.07M | +11.3% | $181.96M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 36 | Point72 Asset Management ✦ | 895.50K | +334.7% | $152.62M | 0.4% | ▲ Add | 5 | SEC ↗ |
| 37 | Arrowstreet Capital ✦ | 364.28K | +46.5% | $62.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 38 | D. E. Shaw & Co. ✦ | 340.10K | +640.9% | $57.96M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 39 | D. E. Shaw & Co. ✦ | 340.10K | +640.9% | $57.96M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 40 | Gotham Asset Management ✦ | 234.91K | +28.8% | $40.03M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 41 | Two Sigma Investments ✦ | 87.34K | +427.8% | $14.89M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 42 | Citadel Advisors ✦ | 86.16K | -51.0% | $14.68M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 43 | Marshall Wace ✦ | 79.46K | -70.4% | $13.54M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 44 | Marshall Wace ✦ | 79.46K | -70.4% | $13.54M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 45 | Norges Bank ✦ (passive) | 73.36K | +43.8% | $12.50M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 46 | Renaissance Technologies ✦ | 66.32K | New | $11.30M | 0.0% | New | 1 | SEC ↗ |
| 47 | T. Rowe Price ✦ | 47.77K | +3.4% | $8.14M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 48 | Bridgewater Associates ✦ | 30.68K | New | $5.23M | 0.0% | New | 1 | SEC ↗ |
| 49 | Fidelity (FMR) ✦ | 5.07K | — | $863,825 | 0.0% | n/c | 1 | SEC ↗ |
| 50 | Fidelity (FMR) ✦ | 5.07K | — | $863,825 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Renaissance Technologies | $11.30M | 0.0% |
| Bridgewater Associates | $5.23M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 793 holders, 57.78M shares, $18.15B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Aug 13
SC 13D/A — MAS JOSE RAMON
7.7% of class · View original SEC filing ↗
Aug 13
SC 13D/A — MAS JORGE
14.8% of class · View original SEC filing ↗
Jul 29
SC 13G/A — BlackRock, Inc.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2025 ·
Methodology ·
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