MLM
Martin Marietta Materials, Inc. · Basic Materials · Construction Materials
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow -13.9% ·
net new positions +20.0%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 159 | +6 | 43.22M | $24.92B | +10 | −5 |
| Q1 2026 | 157 | -3 | 42.60M | $25.03B | +4 | −8 |
| Q4 2025 | 159 | -2 | 46.56M | $28.99B | +1 | −2 |
| Q3 2025 | 20 | +2 | 28.47M | $17.94B | +3 | −2 |
| Q2 2025 | 16 | -2 | 21.07M | $11.56B | — | −2 |
| Q1 2025 | 15 | +4 | 6.81M | $3.25B | +4 | — |
| Q4 2024 | 11 | -4 | 7.91M | $4.08B | — | −4 |
| Q3 2024 | 14 | +1 | 5.54M | $2.98B | +1 | — |
| Q2 2024 | 13 | — | 6.07M | $3.29B | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 2.77M | +2.8% | $1.32B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 1.52M | +3.0% | $722.64M | 0.1% | ▲ Add | 4 | SEC ↗ ×2 |
| 3 | Baillie Gifford ✦ | 1.26M | -34.3% | $600.11M | 0.5% | ▼ Trim | 4 | SEC ↗ ×4 |
| 4 | Norges Bank ✦ (passive) | 580.57K | -2.3% | $277.59M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 5 | Two Sigma Investments ✦ | 315.55K | +33.0% | $150.87M | 0.3% | ▲ Add | 4 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 208.28K | -72.9% | $99.58M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 7 | AQR Capital Management ✦ | 46.82K | +47.9% | $22.16M | 0.0% | ▲ Add | 4 | SEC ↗ ×6 |
| 8 | Arrowstreet Capital ✦ | 44.76K | New | $21.40M | 0.0% | New | 1 | SEC ↗ |
| 9 | Marshall Wace ✦ | 25.52K | -27.3% | $12.20M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 10 | Adage Capital Partners ✦ | 21.74K | New | $10.39M | 0.0% | New | 1 | SEC ↗ |
| 11 | Citadel Advisors ✦ | 10.55K | -88.7% | $5.04M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | Millennium Management ✦ | 9.51K | -86.2% | $4.55M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 13 | D. E. Shaw & Co. ✦ | 3.50K | New | $1.67M | 0.0% | New | 1 | SEC ↗ |
| 14 | Gotham Asset Management ✦ | 805 | New | $384,895 | 0.0% | New | 1 | SEC ↗ |
| 15 | Wellington Management ✦ | 462 | +3.1% | $220,896 | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Arrowstreet Capital | $21.40M | 0.0% |
| Adage Capital Partners | $10.39M | 0.0% |
| D. E. Shaw & Co. | $1.67M | 0.0% |
| Gotham Asset Management | $384,895 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,064 holders, 56.49M shares, $31.19B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
15.4% of class · View original SEC filing ↗