Century Aluminum Company (CENX) ownership: Glencore AG 31% · institutions 104% (13F 2026-03-31). Insider activity, 90 days: 0 sales, 0 open-market buys. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| Glencore plc | 29690702.00 | $1.74B | 30.0% | 2026-03-31 |
| BlackRock | 9010379.00 | $528.82M | 9.1% | 2026-03-31 |
| Vanguard | 7308892.00 | $428.96M | 7.4% | 2026-03-31 |
| State Street | 4667540.00 | $273.94M | 4.7% | 2026-03-31 |
| Sourcerock Group LLC | 2687249.00 | $157.71M | 2.7% | 2026-03-31 |
| FMR (Fidelity) | 2660054.00 | $156.12M | 2.7% | 2026-03-31 |
| Dimensional Fund Advisors | 2190922.00 | $128.55M | 2.2% | 2026-03-31 |
| Invesco | 2076528.00 | $121.87M | 2.1% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-03-25 | |
| Sell | null | 2026-03-25 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.