MTRN
Materion Corporation · Basic Materials · Industrial Materials
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 112 | +7 | 14.49M | $4.30B | +13 | −6 |
| Q1 2026 | 108 | +4 | 14.24M | $2.05B | +8 | −4 |
| Q4 2025 | 103 | -1 | 15.23M | $1.89B | +1 | −2 |
| Q3 2025 | 19 | -1 | 8.80M | $1.06B | — | −2 |
| Q2 2025 | 18 | +1 | 8.08M | $641.67M | +1 | — |
| Q1 2025 | 14 | +3 | 2.09M | $170.54M | +3 | — |
| Q4 2024 | 11 | -1 | 1.95M | $193.18M | — | −1 |
| Q3 2024 | 11 | +2 | 981.22K | $109.77M | +3 | −1 |
| Q2 2024 | 9 | — | 988.09K | $106.85M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 464.02K | — | $50.18M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 464.02K | — | $50.18M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | GAMCO Investors ✦ | 205.35K | — | $22.20M | 0.2% | n/c | 1 | SEC ↗ |
| 4 | Fisher Asset Management ✦ | 154.95K | — | $16.75M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Norges Bank ✦ (passive) | 88.19K | — | $9.54M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | Renaissance Technologies ✦ | 35.90K | — | $3.88M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Citadel Advisors ✦ | 15.74K | — | $1.70M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | Citadel Advisors ✦ | 15.74K | — | $1.70M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | T. Rowe Price ✦ | 12.64K | — | $1.37M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | D. E. Shaw & Co. ✦ | 6.44K | — | $696,573 | 0.0% | n/c | 1 | SEC ↗ |
| 11 | Two Sigma Investments ✦ | 4.86K | — | $525,296 | 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
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 328 holders, 19.47M shares, $2.78B 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.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 1.71K sh · $499,565
Director · 3.71K sh · $1.08M
Officer, Director · 1.38K sh · $395,544
Officer, Director · 287 sh · $82,739
Officer, Director · 11.17K sh · $3.24M
Officer, Director · 3.75K sh · $1.10M
Officer, Director · 2.34K sh · $686,248
Officer, Director · 4.87K sh · $1.43M
Officer, Director · 286 sh · $84,419
Officer, Director · 267 sh · $78,296
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology