10 institutions reported holding $84.1M of CENTURY ALUM CO (CENX) in SEC 13F filings for 2026-06-30. Largest institutional holders: Assenagon Asset Management S.A. ($70.4M), CONGRESS ASSET MANAGEMENT CO ($11.8M), PVG ASSET MANAGEMENT CORP ($1.5M), GAMMA Investing LLC ($219,514), CoreCap Advisors, LLC ($85,349). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | $70.4M | 1.5M | Trimmed |
| 2 | CONGRESS ASSET MANAGEMENT CO | $11.8M | 255,636 | Added |
| 3 | PVG ASSET MANAGEMENT CORP | $1.5M | 33,098 | Added |
| 4 | GAMMA Investing LLC | $219,514 | 4,771 | Added |
| 5 | CoreCap Advisors, LLC | $85,349 | 1,855 | Added |
| 6 | Versant Capital Management, Inc | $23,373 | 508 | Trimmed |
| 7 | Grove Bank & Trust | $21,027 | 457 | Hold |
| 8 | CX Institutional | $3,000 | 62 | Hold |
| 9 | MassMutual Private Wealth & Trust, FSB | $2,991 | 65 | Trimmed |
| 10 | Cedar Mountain Advisors, LLC | $460 | 10 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30