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 Teachers Retirement System | 81,171 | $3.18M | 0.01% | −557−0.7% | Reduced |
| Nomura Holdings Inc | 79,343 | $3.11M | 0.01% | +79,343 | New |
| Headlands Technologies LLC | 77,432 | $3.03M | 0.25% | +5,741+8.0% | Added |
| Alliancebernstein L.P. | 75,318 | $2.95M | 0.00% | +9,075+13.7% | Added |
| Envestnet Asset Management Inc | 75,125 | $2.94M | 0.00% | +75,125 | New |
| HRT Financial LP | 73,502 | $2.88M | 0.01% | +73,502 | New |
| CoreCommodity Management, LLC | 69,384 | $2.72M | 0.57% | −17,448−20.1% | Reduced |
| LPL Financial LLC | 68,524 | $2.68M | 0.00% | +9,252+15.6% | Added |
| AQR Capital Management LLC | 65,305 | $2.56M | 0.00% | −768−1.2% | Reduced |
| Monaco Asset Management SAM | 65,000 | $2.55M | 0.76% | −103,752−61.5% | Reduced |
| Parallax Volatility Advisers, L.P. | 61,314 | $2.40M | 0.07% | +21,698+54.8% | Added |
| Fort Baker Capital Management LP | 60,000 | $2.35M | 0.26% | +60,000 | New |
| Aldebaran Capital, LLC | 57,700 | $2.26M | 2.03% | −1,865−3.1% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 57,600 | $2.26M | 0.00% | +57,600 | New |
| State of Wyoming | 56,929 | $2.23M | 0.24% | +7,101+14.3% | Added |
| Verition Fund Management LLC | 54,280 | $2.13M | 0.01% | −29,038−34.9% | Reduced |
| SEI Investments Co | 52,852 | $2.07M | 0.00% | −29,521−35.8% | Reduced |
| Price T Rowe Associates Inc | 51,725 | $2.03M | 0.00% | +2,217+4.5% | Added |
| California State Teachers Retirement System | 51,225 | $2.01M | 0.00% | −180.0% | Reduced |
| Federated Hermes, Inc. | 50,432 | $1.98M | 0.00% | +35,016+227.1% | Added |
| Prudential Financial Inc | 50,273 | $1.97M | 0.00% | −7,804−13.4% | Reduced |
| Beartown Capital Management, LLC | 50,000 | $1.96M | 1.53% | +50,000 | New |
| Algert Global LLC | 49,593 | $1.94M | 0.03% | −4,350−8.1% | Reduced |
| Engineers Gate Manager LP | 49,524 | $1.94M | 0.02% | −2,357−4.5% | Reduced |
| Intech Investment Management LLC | 49,349 | $1.93M | 0.02% | −29,924−37.7% | Reduced |
| New York State Common Retirement Fund | 49,121 | $1.92M | 0.00% | +33,777+220.1% | Added |
| Franklin Resources Inc | 47,380 | $1.86M | 0.00% | +832+1.8% | Added |
| Gsa Capital Partners LLP | 46,609 | $1.83M | 0.16% | +26,552+132.4% | Added |
| SummerHaven Investment Management, LLC | 43,479 | $1.70M | 0.97% | 00.0% | Unchanged |
| Winton Group Ltd | 42,614 | $1.67M | 0.06% | −6,298−12.9% | Reduced |
| Jane Street Group, LLC | 41,518 | $1.63M | 0.00% | −124,728−75.0% | Reduced |
| Legato Capital Management LLC | 40,973 | $1.61M | 0.14% | +40,973 | New |
| IMC-Chicago, LLC | 37,790 | $1.48M | 0.03% | +37,790 | New |
| Squarepoint Ops LLC | 37,219 | $1.46M | 0.00% | −7,073−16.0% | Reduced |
| Royal Bank of Canada | 37,189 | $1.46M | 0.00% | −233,278−86.3% | Reduced |
| Thrivent Financial for Lutherans | 36,560 | $1.43M | 0.00% | −1,822−4.7% | Reduced |
| Lighthouse Investment Partners, LLC | 35,000 | $1.37M | 0.05% | +10,521+43.0% | Added |
| Capital Fund Management S.A. | 34,505 | $1.35M | 0.01% | +34,505 | New |
| Bank of Montreal | 34,469 | $1.35M | 0.00% | +4,647+15.6% | Added |
| Sigma Planning Corp | 31,870 | $1.25M | 0.03% | +31,870 | New |
| State of Alaska, Department of Revenue | 30,604 | $1.20M | 0.01% | +441+1.5% | Added |
| Polymer Capital Management (US) LLC | 30,000 | $1.18M | 0.15% | +20,703+222.7% | Added |
| Standard Life Aberdeen plc | 29,822 | $1.17M | 0.00% | +2,525+9.3% | Added |
| MetLife Investment Management | 29,515 | $1.16M | 0.01% | −1,783−5.7% | Reduced |
| O'Neil Global Advisors, Inc. | 28,741 | $1.13M | 0.39% | +28,741 | New |
| Virtu Financial LLC | 28,614 | $1.12M | 0.04% | +28,614 | New |
| Occudo Quantitative Strategies LP | 28,548 | $1.12M | 0.07% | −8,191−22.3% | Reduced |
| Illinois Municipal Retirement Fund | 28,526 | $1.12M | 0.01% | +1,150+4.2% | Added |
| Natixis | 28,076 | $1.10M | 0.00% | +28,076 | New |
| Entropy Technologies, LP | 26,953 | $1.06M | 0.06% | +830+3.2% | Added |
| Citigroup Inc | 26,383 | $1.03M | 0.00% | +9,534+56.6% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 26,270 | $1.03M | 0.00% | +8,592+48.6% | Added |
| Oceanic Investment Management LTD | 25,988 | $1.02M | 1.07% | +25,988 | New |
| Manufacturers Life Insurance Company, The | 25,690 | $1.01M | 0.00% | +516+2.0% | Added |
| Himension Fund | 25,250 | $989.3K | 0.06% | +25,250 | New |
| Scientech Research LLC | 24,680 | $967.0K | 0.61% | +7,020+39.8% | Added |
| Lombard Odier Asset Management (USA) Corp | 24,659 | $966.1K | 0.39% | −51,841−67.8% | Reduced |
| Louisiana State Employees Retirement System | 24,400 | $956.0K | 0.02% | −100−0.4% | Reduced |
| Natixis Advisors, L.P. | 23,915 | $937.0K | 0.00% | +4,056+20.4% | Added |
| Ruffer LLP | 23,851 | $935.9K | 0.04% | +23,851 | New |
| Teacher Retirement System of Texas | 23,233 | $910.3K | 0.00% | −10,016−30.1% | Reduced |
| Prelude Capital Management, LLC | 23,178 | $908.1K | 0.07% | +23,178 | New |
| MML Investors Services, LLC | 23,167 | $907.7K | 0.00% | +23,167 | New |
| Concurrent Investment Advisors, LLC | 22,935 | $898.6K | 0.01% | +22,935 | New |
| Janus Henderson Group PLC | 22,906 | $897.7K | 0.00% | 00.0% | Unchanged |
| Quadrature Capital Ltd | 22,081 | $865.1K | 0.01% | +22,081 | New |
| State of Tennessee, Treasury Department | 18,772 | $850.9K | 0.00% | +6,152+48.7% | Added |
| Cambria Investment Management, L.P. | 20,902 | $818.9K | 0.05% | −8,940−30.0% | Reduced |
| SG Americas Securities, LLC | 20,732 | $812.0K | 0.00% | +95+0.5% | Added |
| Creative Planning | 20,073 | $786.5K | 0.00% | +8,910+79.8% | Added |
| Hodges Capital Management Inc. | 20,000 | $783.6K | 0.07% | 00.0% | Unchanged |
| Perennial Advisors, LLC | 19,368 | $758.8K | 0.13% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 18,408 | $721.2K | 0.00% | −4,811−20.7% | Reduced |
| Graham Capital Management, L.P. | 17,933 | $702.6K | 0.02% | +17,933 | New |
| Yousif Capital Management, LLC | 14,283 | $683.7K | 0.01% | −2,170−13.2% | Reduced |
| Aristeia Capital LLC | 16,522 | $647.3K | 0.02% | +16,522 | New |
| Advisor Group Holdings, Inc. | 16,275 | $637.6K | 0.00% | −44,326−73.1% | Reduced |
| PharVision Advisers, LLC | 16,022 | $627.7K | 0.32% | +6,143+62.2% | Added |
| Arizona State Retirement System | 15,663 | $613.7K | 0.00% | −899−5.4% | Reduced |
| Amalgamated Bank | 15,447 | $605.0K | 0.00% | +71+0.5% | Added |
| Callan Family Office, LLC | 14,719 | $576.7K | 0.01% | +13+0.1% | Added |
| Sheets Smith Wealth Management | 14,657 | $574.3K | 0.06% | +5,308+56.8% | Added |
| Comerica Bank | 14,552 | $570.1K | 0.00% | −1,664−10.3% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 14,466 | $566.8K | 0.00% | 00.0% | Unchanged |
| EntryPoint Capital, LLC | 14,410 | $564.6K | 0.22% | +7,371+104.7% | Added |
| Cambridge Investment Research Advisors, Inc. | 14,205 | $557.0K | 0.00% | +14,205 | New |
| Teachers Retirement System of the State of Kentucky | 13,265 | $519.0K | 0.00% | −1,562−10.5% | Reduced |
| Virginia Retirement Systems Et Al | 13,200 | $517.2K | 0.00% | −3,500−21.0% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 13,172 | $516.1K | 0.00% | −377−2.8% | Reduced |
| Chesapeake Asset Management LLC | 13,015 | $509.9K | 0.42% | +13,015 | New |
| Neuberger Berman Group LLC | 12,806 | $501.7K | 0.00% | −806−5.9% | Reduced |
| Three Seasons Wealth, LLC | 12,639 | $495.2K | 0.05% | 00.0% | Unchanged |
| Quest Partners LLC | 12,622 | $494.5K | 0.03% | +2,638+26.4% | Added |
| Oregon Public Employees Retirement Fund | 12,202 | $478.1K | 0.01% | +200+1.7% | Added |
| KLP Kapitalforvaltning AS | 12,000 | $470.2K | 0.00% | +1,100+10.1% | Added |
| Dark Forest Capital Management LP | 11,992 | $469.8K | 0.02% | +11,992 | New |
| HSBC Holdings PLC | 11,732 | $459.7K | 0.00% | −13,158−52.9% | Reduced |
| Park Avenue Securities LLC | 11,583 | $454.0K | 0.00% | +1,347+13.2% | Added |
| Numerai GP LLC | 11,333 | $444.0K | 0.05% | −22,664−66.7% | Reduced |
| Pathstone Holdings, LLC | 11,198 | $438.7K | 0.00% | +46+0.4% | Added |