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 |
|---|---|---|---|---|---|
| New York State Common Retirement Fund | 49,121 | $1.92M | 0.00% | +33,777+220.1% | Added |
| Intech Investment Management LLC | 49,349 | $1.93M | 0.02% | −29,924−37.7% | Reduced |
| Engineers Gate Manager LP | 49,524 | $1.94M | 0.02% | −2,357−4.5% | Reduced |
| Algert Global LLC | 49,593 | $1.94M | 0.03% | −4,350−8.1% | Reduced |
| Beartown Capital Management, LLC | 50,000 | $1.96M | 1.53% | +50,000 | New |
| Prudential Financial Inc | 50,273 | $1.97M | 0.00% | −7,804−13.4% | Reduced |
| Federated Hermes, Inc. | 50,432 | $1.98M | 0.00% | +35,016+227.1% | Added |
| California State Teachers Retirement System | 51,225 | $2.01M | 0.00% | −180.0% | Reduced |
| Price T Rowe Associates Inc | 51,725 | $2.03M | 0.00% | +2,217+4.5% | Added |
| SEI Investments Co | 52,852 | $2.07M | 0.00% | −29,521−35.8% | Reduced |
| Verition Fund Management LLC | 54,280 | $2.13M | 0.01% | −29,038−34.9% | Reduced |
| State of Wyoming | 56,929 | $2.23M | 0.24% | +7,101+14.3% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 57,600 | $2.26M | 0.00% | +57,600 | New |
| Aldebaran Capital, LLC | 57,700 | $2.26M | 2.03% | −1,865−3.1% | Reduced |
| Fort Baker Capital Management LP | 60,000 | $2.35M | 0.26% | +60,000 | New |
| Parallax Volatility Advisers, L.P. | 61,314 | $2.40M | 0.07% | +21,698+54.8% | Added |
| Monaco Asset Management SAM | 65,000 | $2.55M | 0.76% | −103,752−61.5% | Reduced |
| AQR Capital Management LLC | 65,305 | $2.56M | 0.00% | −768−1.2% | Reduced |
| LPL Financial LLC | 68,524 | $2.68M | 0.00% | +9,252+15.6% | Added |
| CoreCommodity Management, LLC | 69,384 | $2.72M | 0.57% | −17,448−20.1% | Reduced |
| HRT Financial LP | 73,502 | $2.88M | 0.01% | +73,502 | New |
| Envestnet Asset Management Inc | 75,125 | $2.94M | 0.00% | +75,125 | New |
| Alliancebernstein L.P. | 75,318 | $2.95M | 0.00% | +9,075+13.7% | Added |
| Headlands Technologies LLC | 77,432 | $3.03M | 0.25% | +5,741+8.0% | Added |
| Nomura Holdings Inc | 79,343 | $3.11M | 0.01% | +79,343 | New |
| New York State Teachers Retirement System | 81,171 | $3.18M | 0.01% | −557−0.7% | Reduced |
| Atom Investors LP | 83,374 | $3.27M | 0.26% | +83,374 | New |
| EAM Investors, LLC | 94,627 | $3.71M | 0.41% | +94,627 | New |
| Campbell & CO Investment Adviser LLC | 97,144 | $3.81M | 0.18% | −46,000−32.1% | Reduced |
| First Trust Advisors LP | 97,419 | $3.82M | 0.00% | +97,419 | New |
| Wealth High Governance Capital Ltda | 97,434 | $3.82M | 1.12% | −52,566−35.0% | Reduced |
| Ameriprise Financial Inc | 97,550 | $3.82M | 0.00% | −45,259−31.7% | Reduced |
| Voleon Capital Management LP | 97,790 | $3.83M | 0.08% | +29,760+43.7% | Added |
| BNP Paribas Arbitrage, SA | 99,079 | $3.88M | 0.00% | −17,140−14.7% | Reduced |
| Segall Bryant & Hamill, LLC | 99,528 | $3.90M | 0.05% | +57,959+139.4% | Added |
| Thomist Capital Management, LP | 100,000 | $3.97M | 1.08% | +16,009+19.1% | Added |
| Caxton Associates LLP | 101,449 | $3.97M | 0.08% | +39,092+62.7% | Added |
| Bessemer Group Inc | 102,393 | $4.01M | 0.01% | +102,204+54,076.2% | Added |
| Barclays PLC | 104,819 | $4.11M | 0.00% | +18,489+21.4% | Added |
| Jefferies Financial Group Inc. | 106,700 | $4.18M | 0.03% | −106,650−50.0% | Reduced |
| Trexquant Investment LP | 106,716 | $4.18M | 0.04% | −82,639−43.6% | Reduced |
| Victory Capital Management Inc | 106,990 | $4.19M | 0.00% | +983+0.9% | Added |
| Marnell Management LLC | 107,056 | $4.19M | 3.19% | +107,056 | New |
| Deutsche Bank AG | 108,278 | $4.24M | 0.00% | +3,292+3.1% | Added |
| Walleye Capital LLC | 108,751 | $4.26M | 0.02% | +108,690+178,180.3% | Added |
| Swiss National Bank | 110,450 | $4.33M | 0.00% | +2,000+1.8% | Added |
| Quantbot Technologies LP | 112,966 | $4.43M | 0.15% | +79,137+233.9% | Added |
| Woodline Partners LP | 115,294 | $4.52M | 0.02% | −104,970−47.7% | Reduced |
| Great West Life Assurance Co | 116,511 | $4.57M | 0.01% | +71,655+159.7% | Added |
| Nuveen, LLC | 117,310 | $4.60M | 0.00% | +657+0.6% | Added |
| Renaissance Technologies LLC | 117,999 | $4.62M | 0.01% | −247,100−67.7% | Reduced |
| Adage Capital Partners GP, L.L.C. | 120,000 | $4.70M | 0.01% | −175,000−59.3% | Reduced |
| Legal & General Group Plc | 125,404 | $4.91M | 0.00% | −7,995−6.0% | Reduced |
| Schonfeld Strategic Advisors LLC | 127,957 | $5.01M | 0.03% | +83,609+188.5% | Added |
| Raymond James Financial Inc | 130,259 | $5.10M | 0.00% | +539+0.4% | Added |
| Y-Intercept (Hong Kong) Ltd | 141,200 | $5.53M | 0.12% | +91,086+181.8% | Added |
| Cohen & Steers, Inc. | 142,769 | $5.59M | 0.01% | −56,231−28.3% | Reduced |
| Kailix Advisors LLC | 146,550 | $5.74M | 6.40% | +146,550 | New |
| Russell Investments Group, Ltd. | 147,792 | $5.79M | 0.01% | −110,213−42.7% | Reduced |
| Boothbay Fund Management, LLC | 147,795 | $5.79M | 0.15% | +27,877+23.2% | Added |
| Rhumbline Advisers | 151,349 | $5.93M | 0.00% | +4,095+2.8% | Added |
| Wealth High Governance Asset Management Ltda. | 152,566 | $5.98M | 1.07% | +152,566 | New |
| Insight Wealth Strategies, LLC | 154,066 | $6.04M | 0.69% | +154,066 | New |
| ExodusPoint Capital Management, LP | 155,087 | $6.08M | 0.07% | +155,087 | New |
| Edgestream Partners, L.P. | 157,424 | $6.17M | 0.17% | +557+0.4% | Added |
| Systematic Financial Management LP | 166,527 | $6.52M | 0.15% | +166,527 | New |
| Point72 Asset Management, L.P. | 172,408 | $6.75M | 0.01% | +172,408 | New |
| State of Wisconsin Investment Board | 173,939 | $6.81M | 0.02% | +46,239+36.2% | Added |
| BW Gestao de Investimentos Ltda. | 183,669 | $7.20M | 0.25% | +83,669+83.7% | Added |
| Public Sector Pension Investment Board | 184,343 | $7.22M | 0.02% | −23,178−11.2% | Reduced |
| Wellington Management Group LLP | 197,843 | $7.75M | 0.00% | +3,749+1.9% | Added |
| Congress Asset Management Co | 206,439 | $8.09M | 0.06% | +3,830+1.9% | Added |
| Wells Fargo & Company | 206,691 | $8.10M | 0.00% | +50,271+32.1% | Added |
| Susquehanna International Group, LLP | 210,483 | $8.25M | 0.01% | −7,668−3.5% | Reduced |
| JPMorgan Chase & Co | 214,173 | $8.39M | 0.00% | −210,079−49.5% | Reduced |
| Hartree Partners, LP | 216,688 | $8.49M | 3.10% | −1,077−0.5% | Reduced |
| CSM Advisors, LLC | 224,180 | $8.78M | 0.24% | −74,024−24.8% | Reduced |
| Baird Financial Group, Inc. | 240,610 | $9.43M | 0.01% | +86,032+55.7% | Added |
| Icon Advisers Inc | 242,000 | $9.48M | 2.05% | 00.0% | Unchanged |
| Wexford Capital LP | 244,649 | $9.59M | 2.47% | +38,136+18.5% | Added |
| Bornite Capital Management LP | 250,000 | $9.79M | 0.96% | +250,000 | New |
| Walleye Trading LLC | 250,562 | $9.82M | 0.16% | +136,490+119.7% | Added |
| Bridgewater Associates, LP | 271,798 | $10.6M | 0.04% | +271,798 | New |
| BCJ Capital Management, LLC | 281,376 | $11.0M | 0.64% | +281,376 | New |
| Nicholas Investment Partners, LP | 290,960 | $11.4M | 0.83% | +290,960 | New |
| First Eagle Investment Management, LLC | 301,612 | $11.8M | 0.02% | −38,541−11.3% | Reduced |
| Bank of America Corp | 307,526 | $12.0M | 0.00% | −89,705−22.6% | Reduced |
| Drummond Knight Asset Management Pty Ltd | 313,376 | $12.3M | 3.44% | +313,376 | New |
| Royce & Associates LP | 314,289 | $12.3M | 0.12% | +165,829+111.7% | Added |
| South Dakota Investment Council | 317,361 | $12.4M | 0.24% | −63,800−16.7% | Reduced |
| Bank of New York Mellon Corp | 335,401 | $13.1M | 0.00% | −1,479−0.4% | Reduced |
| CDC Financial, Inc. | 344,200 | $13.5M | 12.46% | +344,200 | New |
| Tudor Investment Corp Et Al | 365,857 | $14.3M | 0.08% | +365,857 | New |
| Westend Capital Management, LLC | 374,274 | $14.7M | 4.11% | +374,274 | New |
| Principal Financial Group Inc | 400,637 | $15.7M | 0.01% | +49,779+14.2% | Added |
| Steamboat Capital Partners, LLC | 423,808 | $16.6M | 4.56% | −48,121−10.2% | Reduced |
| Antipodes Partners Ltd | 423,789 | $16.6M | 0.35% | +423,789 | New |
| Allspring Global Investments Holdings, LLC | 455,876 | $18.7M | 0.03% | +434,097+1,993.2% | Added |
| Encompass Capital Advisors LLC | 499,837 | $19.6M | 0.94% | −311,325−38.4% | Reduced |
| Burkehill Global Management, LP | 500,000 | $19.6M | 1.29% | +500,000 | New |