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, Q4 2025
Institutional positions in Century Aluminum Co as of Dec 31, 2025. 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
- Institutional holders
- 326
- +76 vs. Q3 2025
- Shares held
- 99.9M
- +3.63M (+3.8%) vs. Q3 2025
- Total value
- $3.92B
- +$1.09B (+38.5%) vs. Q3 2025
- New holders
- 103
- 108 more added
- Sold out
- 27
- 92 more reduced
5 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: 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, Q4 2025
Shares, value and share of portfolio for each institution holding Century Aluminum Co; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Northern Trust Corp | 521,762 | $20.4M | 0.00% | +3,600+0.7% | Added |
| Charles Schwab Investment Management Inc | 535,924 | $21.0M | 0.00% | −6,366−1.2% | Reduced |
| Boston Partners | 600,237 | $23.5M | 0.02% | −539,424−47.3% | Reduced |
| Mountaineer Partners Management, LLC | 608,475 | $23.8M | 13.34% | −52,568−8.0% | Reduced |
| Invesco Ltd. | 629,412 | $24.7M | 0.00% | −220,110−25.9% | Reduced |
| Goldman Sachs Group Inc | 665,702 | $26.1M | 0.00% | +115,599+21.0% | Added |
| Citadel Advisors LLC | 697,217 | $27.3M | 0.02% | −808,479−53.7% | Reduced |
| Qube Research & Technologies Ltd | 726,192 | $28.5M | 0.04% | −96,938−11.8% | Reduced |
| UBS Asset Management Americas Inc | 747,087 | $29.3M | 0.01% | −112,813−13.1% | Reduced |
| Impala Asset Management LLC | 857,805 | $33.6M | 21.17% | +168,805+24.5% | Added |
| Fisher Asset Management, LLC | 866,944 | $34.0M | 0.01% | −99,631−10.3% | Reduced |
| Assenagon Asset Management S.A. | 872,753 | $34.2M | 0.05% | +464,814+113.9% | Added |
| Voloridge Investment Management, LLC | 940,325 | $36.8M | 0.13% | +143,442+18.0% | Added |
| American Century Companies Inc | 974,241 | $38.2M | 0.02% | +206,549+26.9% | Added |
| UBS Group AG | 1,111,273 | $43.5M | 0.01% | +636,796+134.2% | Added |
| D. E. Shaw & Co., Inc. | 1,190,937 | $46.7M | 0.04% | +989,343+490.8% | Added |
| Geode Capital Management, LLC | 1,318,503 | $51.7M | 0.00% | −4930.0% | Reduced |
| Millennium Management LLC | 1,418,032 | $55.6M | 0.04% | +975,359+220.3% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 1,493,823 | $58.5M | 0.09% | +36,422+2.5% | Added |
| Morgan Stanley | 1,609,093 | $63.0M | 0.00% | +176,730+12.3% | Added |
| Dimensional Fund Advisors LP | 2,765,132 | $108.3M | 0.02% | −296,102−9.7% | Reduced |
| Sourcerock Group LLC | 3,621,984 | $141.9M | 8.12% | +981,519+37.2% | Added |
| State Street Corp | 4,295,711 | $168.3M | 0.01% | +77,895+1.8% | Added |
| Vanguard Group Inc | 6,939,794 | $271.9M | 0.00% | +1,094,257+18.7% | Added |
| BlackRock, Inc. | 9,484,567 | $371.6M | 0.01% | −643,392−6.4% | Reduced |
| Glencore plc | 36,005,947 | $1.41B | 32.56% | −4,051,409−10.1% | Reduced |
| Invenomic Capital Management LP | 0 | $0 | 0.00% | −155,269−100.0% | Sold out |
| Amitell Capital Pte Ltd | 0 | $0 | 0.00% | −108,000−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −70,000−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −55,723−100.0% | Sold out |
| New Century Financial Group, LLC | 0 | $0 | 0.00% | −33,623−100.0% | Sold out |
| Convergence Investment Partners, LLC | 0 | $0 | 0.00% | −32,078−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −30,100−100.0% | Sold out |
| PFG Advisors | 0 | $0 | 0.00% | −25,911−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −22,586−100.0% | Sold out |
| Massar Capital Management, LP | 0 | $0 | 0.00% | −17,250−100.0% | Sold out |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −16,106−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −14,409−100.0% | Sold out |
| Guggenheim Capital LLC | 0 | $0 | 0.00% | −9,254−100.0% | Sold out |
| Cerity Partners LLC | 0 | $0 | 0.00% | −9,226−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −7,324−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −7,125−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −7,140−100.0% | Sold out |
| GTS Securities LLC | 0 | $0 | 0.00% | −6,925−100.0% | Sold out |
| Mark Sheptoff Financial Planning, LLC | 0 | $0 | 0.00% | −4,100−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −1,153−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −290−100.0% | Sold out |
| Wealthspire Advisors, LLC | 0 | $0 | 0.00% | −286−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| S&T Bank | 0 | $0 | 0.00% | −107−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −57−100.0% | Sold out |
| Atlantic Trust, LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| JPL Wealth Management, LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | – | – | – | – | Not filed |
| Sheets Smith Investment Management | – | – | – | – | Not filed |
| Wolverine Trading, LLC | – | – | – | – | Not filed |
| Point72 Asia (Singapore) Pte. Ltd. | – | – | – | – | Not filed |
| Point72 (DIFC) Ltd | – | – | – | – | Not filed |