Security record · archived quarter
MTZ
MasTec, Inc. · Industrials · Engineering & Construction
3Tracked holders
0Δ holders
139.56KShares held
$27.04MReported value
+0New positions
−0Exits
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 139.56K | $27.04M | n/a | n/a |
| 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 | n/a |
| Q3 2025 | 18 | -2 | 22.22M | $4.73B | +1 | −4 |
| Q2 2025 | 18 | +2 | 21.57M | $3.68B | +2 | n/a |
| Q1 2025 | 13 | -1 | 6.17M | $714.27M | n/a | −1 |
| Q4 2024 | 14 | +2 | 7.54M | $1.03B | +2 | n/a |
| Q3 2024 | 11 | 0 | 5.95M | $732.85M | n/a | n/a |
| Q2 2024 | 11 | n/a | 5.85M | $625.58M | n/a | n/a |
Who holds it · Q3 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | 101.27K | -60.8% | $21.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 2 | Wealth Enhancement Advisory… | 37.76K | -5.9% | $5.29M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 3 | TD Waterhouse Canada Inc. | 518 | -98.4% | $110,629 | 0.0% | ▼ Trim | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
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: Q3 2026 ·
Methodology ·
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