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Security record · archived quarter

MTZ

MasTec, Inc. · Industrials · Engineering & Construction

246.85 -3.3% mkt cap $19.82B quote delayed (FMP) · as of Aug 25 22:08 UTC — separate from filing data below

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024
13Tracked holders
-1Δ holders
6.17MShares held
$714.27MReported value
+0New positions
−1Exits
Strongly Falling Conviction score 25/100 How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth -7.1% · share flow -18.2% · net new positions -7.7%formula
Broad distribution — falling shares and fewer holders

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
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
Holder count
Who holds it · Q1 2025
#ManagerSharesΔ sharesValueTheir weightHeld
1 State Street Global Advisors (passive) 1.92M +0.8% $223.77M 0.0% ▲ Add 2 SEC ↗
2 Geode Capital Management (passive) 1.11M +7.7% $129.03M 0.0% ▲ Add 4 SEC ↗
3 Geode Capital Management (passive) 1.11M +7.7% $129.03M 0.0% ▲ Add 4 SEC ↗
4 Millennium Management 946.35K -35.2% $110.45M 0.1% ▼ Trim 4 SEC ↗
5 AQR Capital Management 963.75K +23.6% $106.23M 0.1% ▲ Add 4 SEC ↗
6 AQR Capital Management 963.75K +23.6% $106.23M 0.1% ▲ Add 4 SEC ↗
7 AQR Capital Management 963.75K +23.6% $106.23M 0.1% ▲ Add 4 SEC ↗
8 AQR Capital Management 963.75K +23.6% $106.23M 0.1% ▲ Add 4 SEC ↗
9 AQR Capital Management 963.75K +23.6% $106.23M 0.1% ▲ Add 4 SEC ↗
10 Marshall Wace 268.05K +578.9% $31.28M 0.0% ▲ Add 4 SEC ↗
11 Marshall Wace 268.05K +578.9% $31.28M 0.0% ▲ Add 4 SEC ↗
12 Marshall Wace 268.05K +578.9% $31.28M 0.0% ▲ Add 4 SEC ↗
13 Arrowstreet Capital 248.68K -43.5% $29.02M 0.0% ▼ Trim 2 SEC ↗
14 Point72 Asset Management 206.02K -71.9% $24.04M 0.1% ▼ Trim 4 SEC ↗
15 Gotham Asset Management 182.39K +8.8% $21.29M 0.2% ▲ Add 4 SEC ↗
16 Citadel Advisors 175.77K -73.7% $20.51M 0.0% ▼ Trim 4 SEC ↗
17 Citadel Advisors 175.77K -73.7% $20.51M 0.0% ▼ Trim 4 SEC ↗
18 Norges Bank (passive) 51.00K -9.4% $5.95M 0.0% ▼ Trim 4 SEC ↗
19 T. Rowe Price 46.22K +0.2% $5.39M 0.0% ▲ Add 4 SEC ↗
20 D. E. Shaw & Co. 45.90K -37.0% $5.36M 0.0% ▼ Trim 4 SEC ↗
21 Two Sigma Investments 16.55K -38.9% $1.93M 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

Renaissance Technologies $16.57M was 0.0%

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.

Beneficial ownership
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.

View original SEC filing ↗

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: Q1 2025 · Methodology · Get this via the API