Century Aluminum Co
CENX- Exchange
- Nasdaq
- Industry
- Primary Production of Aluminum
- SEC CIK
- 0000949157
No open-market purchases or sales by Century Aluminum Co insiders were filed in the last 90 days; 416 institutions reported holding it in 13F filings for Q2 2026, worth $4.79B in total; no superinvestor holds it.
13F holders, Q3 2026
Institutional positions in Century Aluminum Co as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.
- Institutional holders
- 2
- 0 vs. Q2 2026
- Shares held
- 570
- 0 (0.0%) vs. Q2 2026
- Total value
- $20.3K
- −$6.09K (−23.1%) vs. Q2 2026
- New holders
- 0
- 0 more added
- Sold out
- 0
- 0 more reduced
414 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CENX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 416 | $4.79B |
| Q1 2026 | 387 | $5.92B |
| Q4 2025 | 326 | $3.92B |
| Q3 2025 | 255 | $2.83B |
| Q2 2025 | 222 | $1.72B |
| Q1 2025 | 218 | $1.72B |
| Q4 2024 | 222 | $1.68B |
| Q3 2024 | 197 | $892.4M |
| Q2 2024 | 191 | $923.2M |
| Q1 2024 | 180 | $829.8M |
| Q4 2023 | 171 | $693.3M |
| Q3 2023 | 162 | $378.2M |
| Q2 2023 | 160 | $438.5M |
| Q1 2023 | 168 | $518.2M |
| Q4 2022 | 169 | $423.5M |
| Q3 2022 | 176 | $269.4M |
| Q2 2022 | 172 | $415.9M |
| Q1 2022 | 190 | $1.39B |
| Q4 2021 | 164 | $844.8M |
| Q3 2021 | 148 | $674.8M |
| Q2 2021 | 146 | $673.3M |
| Q1 2021 | 139 | $823.3M |
Institutions, Q3 2026
Shares, value and share of portfolio for each institution holding Century Aluminum Co; share changes are against Q2 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| HFM Investment Advisors, LLC | – | – | – | – | Not filed |
| TD Capital Management LLC | – | – | – | – | Not filed |
| Ankerstar Wealth, LLC | – | – | – | – | Not filed |
| Davis Capital Management | – | – | – | – | Not filed |
| GHP Investment Advisors, Inc. | – | – | – | – | Not filed |
| Abound Wealth Management | – | – | – | – | Not filed |
| Westend Capital Management, LLC | – | – | – | – | Not filed |
| Bay Harbor Wealth Management, LLC | – | – | – | – | Not filed |
| LRI Investments, LLC | – | – | – | – | Not filed |
| Dunhill Financial, LLC | – | – | – | – | Not filed |
| Medallion Wealth Advisors, LLC | – | – | – | – | Not filed |
| DecisionPoint Financial, LLC | – | – | – | – | Not filed |
| Darwin Advisors, LLC | – | – | – | – | Not filed |
| Avion Wealth | – | – | – | – | Not filed |
| Evolution Advisers, Inc. | – | – | – | – | Not filed |
| Navigoe, LLC | – | – | – | – | Not filed |