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 2025
Institutional positions in Century Aluminum Co as of Sep 30, 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
- 255
- +34 vs. Q2 2025
- Shares held
- 96.5M
- +980.6K (+1.0%) vs. Q2 2025
- Total value
- $2.83B
- +$1.11B (+64.6%) vs. Q2 2025
- New holders
- 67
- 83 more added
- Sold out
- 33
- 79 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Century Aluminum Co; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Oxford Asset Management LLP | 15,108 | $443.6K | 0.15% | +15,108 | New |
| New York State Common Retirement Fund | 15,344 | $450.5K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 15,376 | $451.0K | 0.00% | +548+3.7% | Added |
| Federated Hermes, Inc. | 15,416 | $452.6K | 0.00% | −7,038−31.3% | Reduced |
| Integrated Wealth Concepts LLC | 16,106 | $472.9K | 0.00% | −1,536−8.7% | Reduced |
| Comerica Bank | 16,216 | $476.1K | 0.00% | −2,632−14.0% | Reduced |
| Yousif Capital Management, LLC | 16,453 | $483.1K | 0.01% | −2,934−15.1% | Reduced |
| Arizona State Retirement System | 16,562 | $486.3K | 0.00% | +411+2.5% | Added |
| Virginia Retirement Systems Et Al | 16,700 | $490.3K | 0.00% | −9,700−36.7% | Reduced |
| Citigroup Inc | 16,849 | $494.7K | 0.00% | −29,184−63.4% | Reduced |
| Massar Capital Management, LP | 17,250 | $506.5K | 0.18% | +17,250 | New |
| Scientech Research LLC | 17,660 | $518.5K | 0.18% | +17,660 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 17,678 | $519.0K | 0.00% | +5,107+40.6% | Added |
| Perennial Advisors, LLC | 19,368 | $568.6K | 0.10% | −10,000−34.1% | Reduced |
| Natixis Advisors, L.P. | 19,859 | $583.0K | 0.00% | +799+4.2% | Added |
| Hodges Capital Management Inc. | 20,000 | $587.2K | 0.05% | 00.0% | Unchanged |
| XTX Topco Ltd | 20,054 | $588.8K | 0.03% | +8,588+74.9% | Added |
| Gsa Capital Partners LLP | 20,057 | $589.0K | 0.05% | −7,723−27.8% | Reduced |
| SG Americas Securities, LLC | 20,637 | $606.0K | 0.00% | +10,997+114.1% | Added |
| Wolverine Trading, LLC | 21,227 | $624.0K | 0.01% | +21,227 | New |
| Allspring Global Investments Holdings, LLC | 21,779 | $640.3K | 0.00% | +21,779 | New |
| Sheets Smith Investment Management | 22,196 | $651.7K | 0.42% | +22,196 | New |
| Gotham Asset Management, LLC | 22,586 | $663.1K | 0.00% | +5,939+35.7% | Added |
| Janus Henderson Group PLC | 22,906 | $672.4K | 0.00% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 23,219 | $681.7K | 0.00% | 00.0% | Unchanged |
| CenterBook Partners LP | 24,003 | $704.7K | 0.03% | +24,003 | New |
| Lighthouse Investment Partners, LLC | 24,479 | $718.7K | 0.03% | −49,133−66.7% | Reduced |
| Louisiana State Employees Retirement System | 24,500 | $719.3K | 0.01% | +100+0.4% | Added |
| Quarry LP | 24,701 | $725.2K | 0.18% | +24,449+9,702.0% | Added |
| HSBC Holdings PLC | 24,890 | $731.0K | 0.00% | −27,509−52.5% | Reduced |
| Manufacturers Life Insurance Company, The | 25,174 | $739.1K | 0.00% | +5,686+29.2% | Added |
| PFG Advisors | 25,911 | $760.7K | 0.03% | +25,911 | New |
| Entropy Technologies, LP | 26,123 | $767.0K | 0.06% | +26,123 | New |
| Standard Life Aberdeen plc | 27,297 | $801.4K | 0.00% | +14,253+109.3% | Added |
| Illinois Municipal Retirement Fund | 27,376 | $803.8K | 0.01% | +4,661+20.5% | Added |
| Bank of Montreal | 29,822 | $875.6K | 0.00% | −10,337−25.7% | Reduced |
| Cambria Investment Management, L.P. | 29,842 | $876.2K | 0.05% | +5,967+25.0% | Added |
| Omers Administration Corp | 30,100 | $883.7K | 0.01% | +30,100 | New |
| State of Alaska, Department of Revenue | 30,163 | $884.0K | 0.01% | −961−3.1% | Reduced |
| MetLife Investment Management | 31,298 | $918.9K | 0.00% | 00.0% | Unchanged |
| Convergence Investment Partners, LLC | 32,078 | $941.8K | 0.21% | +32,078 | New |
| Group One Trading, L.P. | 32,275 | $947.6K | 0.03% | +32,275 | New |
| Teacher Retirement System of Texas | 33,249 | $976.2K | 0.00% | −6,381−16.1% | Reduced |
| New Century Financial Group, LLC | 33,623 | $987.2K | 1.75% | +33,623 | New |
| Quantbot Technologies LP | 33,829 | $993.2K | 0.03% | −7,551−18.2% | Reduced |
| Numerai GP LLC | 33,997 | $998.2K | 0.14% | +12,472+57.9% | Added |
| Occudo Quantitative Strategies LP | 36,739 | $1.08M | 0.13% | +36,739 | New |
| Thrivent Financial for Lutherans | 38,382 | $1.13M | 0.00% | −38−0.1% | Reduced |
| Parallax Volatility Advisers, L.P. | 39,616 | $1.16M | 0.03% | +39,616 | New |
| Segall Bryant & Hamill, LLC | 41,569 | $1.22M | 0.02% | +41,569 | New |
| SummerHaven Investment Management, LLC | 43,479 | $1.28M | 0.74% | +43,479 | New |
| Squarepoint Ops LLC | 44,292 | $1.30M | 0.00% | −208,039−82.4% | Reduced |
| Schonfeld Strategic Advisors LLC | 44,348 | $1.30M | 0.01% | +44,348 | New |
| Great West Life Assurance Co | 44,856 | $1.32M | 0.00% | −3,353−7.0% | Reduced |
| Franklin Resources Inc | 46,548 | $1.37M | 0.00% | +1,624+3.6% | Added |
| Winton Group Ltd | 48,912 | $1.44M | 0.05% | −35,585−42.1% | Reduced |
| Price T Rowe Associates Inc | 49,508 | $1.45M | 0.00% | +2,999+6.4% | Added |
| Advisor Group Holdings, Inc. | 60,601 | $1.46M | 0.00% | +43,829+261.3% | Added |
| State of Wyoming | 49,828 | $1.46M | 0.17% | −27,641−35.7% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 50,114 | $1.47M | 0.04% | +50,114 | New |
| California State Teachers Retirement System | 51,243 | $1.50M | 0.00% | +3,271+6.8% | Added |
| Engineers Gate Manager LP | 51,881 | $1.52M | 0.02% | +51,881 | New |
| Algert Global LLC | 53,943 | $1.58M | 0.03% | +450+0.8% | Added |
| Brevan Howard Capital Management LP | 55,723 | $1.64M | 0.02% | −29,579−34.7% | Reduced |
| Prudential Financial Inc | 58,077 | $1.71M | 0.00% | −40,110−40.9% | Reduced |
| LPL Financial LLC | 59,272 | $1.74M | 0.00% | +48,703+460.8% | Added |
| Aldebaran Capital, LLC | 59,565 | $1.75M | 1.61% | −1,620−2.6% | Reduced |
| Caxton Associates LLP | 62,357 | $1.83M | 0.05% | +62,357 | New |
| AQR Capital Management LLC | 66,073 | $1.94M | 0.00% | +11,406+20.9% | Added |
| Alliancebernstein L.P. | 66,243 | $1.94M | 0.00% | −4,457−6.3% | Reduced |
| Voleon Capital Management LP | 68,030 | $2.00M | 0.05% | +68,030 | New |
| LMR Partners LLP | 70,000 | $2.06M | 0.03% | −34,000−32.7% | Reduced |
| Headlands Technologies LLC | 71,691 | $2.10M | 0.17% | +56,695+378.1% | Added |
| Lombard Odier Asset Management (USA) Corp | 76,500 | $2.25M | 0.51% | +16,089+26.6% | Added |
| Intech Investment Management LLC | 79,273 | $2.33M | 0.02% | −19,890−20.1% | Reduced |
| New York State Teachers Retirement System | 81,728 | $2.40M | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 82,373 | $2.42M | 0.00% | +61,447+293.6% | Added |
| Verition Fund Management LLC | 83,318 | $2.45M | 0.01% | −201,115−70.7% | Reduced |
| Thomist Capital Management, LP | 83,991 | $2.47M | 0.77% | −137,755−62.1% | Reduced |
| Barclays PLC | 86,330 | $2.53M | 0.00% | −18,435−17.6% | Reduced |
| CoreCommodity Management, LLC | 86,832 | $2.55M | 0.47% | −117,076−57.4% | Reduced |
| BW Gestao de Investimentos Ltda. | 100,000 | $2.94M | 0.22% | +100,000 | New |
| Deutsche Bank AG | 104,986 | $3.08M | 0.00% | +4,633+4.6% | Added |
| Victory Capital Management Inc | 106,007 | $3.11M | 0.00% | +8,081+8.3% | Added |
| Amitell Capital Pte Ltd | 108,000 | $3.17M | 2.34% | +108,000 | New |
| Swiss National Bank | 108,450 | $3.18M | 0.00% | +2,700+2.6% | Added |
| Walleye Trading LLC | 114,072 | $3.35M | 0.05% | +111,372+4,124.9% | Added |
| BNP Paribas Arbitrage, SA | 116,219 | $3.41M | 0.00% | +2,255+2.0% | Added |
| Nuveen, LLC | 116,653 | $3.42M | 0.00% | −2,153−1.8% | Reduced |
| Boothbay Fund Management, LLC | 119,918 | $3.52M | 0.09% | +47,981+66.7% | Added |
| Cubist Systematic Strategies, LLC | 120,344 | $3.53M | 0.05% | +120,344 | New |
| State of Wisconsin Investment Board | 127,700 | $3.75M | 0.01% | −75,888−37.3% | Reduced |
| Raymond James Financial Inc | 129,720 | $3.81M | 0.00% | +6,305+5.1% | Added |
| Legal & General Group Plc | 133,399 | $3.92M | 0.00% | +956+0.7% | Added |
| Ameriprise Financial Inc | 142,809 | $4.19M | 0.00% | +12,629+9.7% | Added |
| Campbell & CO Investment Adviser LLC | 143,144 | $4.20M | 0.32% | +123,285+620.8% | Added |
| Rhumbline Advisers | 147,254 | $4.32M | 0.00% | +119+0.1% | Added |
| Royce & Associates LP | 148,460 | $4.36M | 0.04% | +148,460 | New |
| Wealth High Governance Capital Ltda | 150,000 | $4.40M | 1.26% | +150,000 | New |
| Baird Financial Group, Inc. | 154,578 | $4.54M | 0.01% | +154,578 | New |