MLM
Martin Marietta Materials, Inc. · Basic Materials · Construction Materials
Momentum inputs (comparable managers):
holder breadth +7.7% ·
share flow -8.7% ·
net new positions +7.1%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 161 | +6 | 43.53M | $25.10B | +10 | −3 |
| 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 | Baillie Gifford ✦ | 2.12M | -3.9% | $1.14B | 0.9% | ▼ Trim | 2 | SEC ↗ |
| 2 | Baillie Gifford ✦ | 2.12M | -3.9% | $1.14B | 0.9% | ▼ Trim | 2 | SEC ↗ |
| 3 | Baillie Gifford ✦ | 2.12M | -3.9% | $1.14B | 0.9% | ▼ Trim | 2 | SEC ↗ |
| 4 | Baillie Gifford ✦ | 2.12M | -3.9% | $1.14B | 0.9% | ▼ Trim | 2 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 1.44M | -5.3% | $772.59M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 6 | Geode Capital Management ✦ (passive) | 1.44M | -5.3% | $772.59M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 837.10K | -32.0% | $450.57M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 8 | T. Rowe Price ✦ | 837.10K | -32.0% | $450.57M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 9 | Norges Bank ✦ (passive) | 641.95K | -2.2% | $345.53M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Marshall Wace ✦ | 209.10K | +22.6% | $112.55M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 11 | Marshall Wace ✦ | 209.10K | +22.6% | $112.55M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 12 | Two Sigma Investments ✦ | 152.10K | +37.8% | $81.87M | 0.2% | ▲ Add | 2 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 39.21K | -44.0% | $21.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 39.21K | -44.0% | $21.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 39.21K | -44.0% | $21.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 39.21K | -44.0% | $21.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 17 | D. E. Shaw & Co. ✦ | 38.03K | +3480.8% | $20.47M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | Citadel Advisors ✦ | 35.60K | +2133.6% | $19.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | Citadel Advisors ✦ | 35.60K | +2133.6% | $19.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 20 | Millennium Management ✦ | 21.61K | +424.3% | $11.63M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 21 | Adage Capital Partners ✦ | 5.64K | -93.3% | $3.04M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 22 | Arrowstreet Capital ✦ | 1.73K | New | $929,020 | 0.0% | New | 1 | SEC ↗ |
| 23 | Gotham Asset Management ✦ | 530 | -96.8% | $285,273 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 24 | Wellington Management ✦ | 425 | +9.8% | $228,756 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | Wellington Management ✦ | 425 | +9.8% | $228,756 | 0.0% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Arrowstreet Capital | $929,020 | 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 ↗