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, Q2 2025
Institutional positions in Century Aluminum Co as of Jun 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
- 222
- +7 vs. Q1 2025
- Shares held
- 95.5M
- +3.41M (+3.7%) vs. Q1 2025
- Total value
- $1.72B
- +$11.7M (+0.7%) vs. Q1 2025
- New holders
- 44
- 88 more added
- Sold out
- 37
- 72 more reduced
3 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Century Aluminum Co; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Numerai GP LLC | 21,525 | $387.9K | 0.06% | +21,525 | New |
| Federated Hermes, Inc. | 22,454 | $404.6K | 0.00% | −42,944−65.7% | Reduced |
| Illinois Municipal Retirement Fund | 22,715 | $409.3K | 0.01% | −3,133−12.1% | Reduced |
| Janus Henderson Group PLC | 22,906 | $412.9K | 0.00% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 23,219 | $418.4K | 0.00% | 00.0% | Unchanged |
| Polymer Capital Management (US) LLC | 23,500 | $423.5K | 0.07% | −2,197−8.5% | Reduced |
| Cambria Investment Management, L.P. | 23,875 | $430.2K | 0.03% | −663−2.7% | Reduced |
| Louisiana State Employees Retirement System | 24,400 | $439.7K | 0.01% | −100−0.4% | Reduced |
| Three Seasons Wealth, LLC | 25,036 | $451.1K | 0.05% | +25,036 | New |
| Two Sigma Securities, LLC | 25,943 | $467.5K | 0.06% | +25,943 | New |
| Virginia Retirement Systems Et Al | 26,400 | $475.7K | 0.00% | −300−1.1% | Reduced |
| Versor Investments LP | 27,666 | $498.5K | 0.09% | −2,234−7.5% | Reduced |
| Gsa Capital Partners LLP | 27,780 | $501.0K | 0.04% | −69,116−71.3% | Reduced |
| Perennial Advisors, LLC | 29,368 | $529.2K | 0.10% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 31,124 | $560.0K | 0.01% | +2,329+8.1% | Added |
| MetLife Investment Management | 31,298 | $564.0K | 0.00% | −280−0.9% | Reduced |
| HRT Financial LP | 31,497 | $567.0K | 0.00% | −15,124−32.4% | Reduced |
| Orion Resource Partners LP | 34,147 | $615.3K | 0.11% | +22,942+204.7% | Added |
| Fox Run Management, L.L.C. | 35,546 | $640.5K | 0.11% | +35,546 | New |
| Thrivent Financial for Lutherans | 38,420 | $692.0K | 0.00% | +249+0.7% | Added |
| ExodusPoint Capital Management, LP | 39,410 | $710.0K | 0.01% | +39,410 | New |
| Teacher Retirement System of Texas | 39,630 | $714.1K | 0.00% | +6,216+18.6% | Added |
| Bank of Montreal | 40,159 | $723.7K | 0.00% | −131,930−76.7% | Reduced |
| Quantbot Technologies LP | 41,380 | $745.7K | 0.02% | −79,498−65.8% | Reduced |
| Centiva Capital, LP | 44,654 | $804.7K | 0.05% | +8,050+22.0% | Added |
| Franklin Resources Inc | 44,924 | $809.5K | 0.00% | −793−1.7% | Reduced |
| Jennison Associates LLC | 45,172 | $814.0K | 0.00% | −1,887−4.0% | Reduced |
| Citigroup Inc | 46,033 | $829.5K | 0.00% | −38,184−45.3% | Reduced |
| Price T Rowe Associates Inc | 46,509 | $839.0K | 0.00% | +1,949+4.4% | Added |
| California State Teachers Retirement System | 47,972 | $864.5K | 0.00% | −3,825−7.4% | Reduced |
| Great West Life Assurance Co | 48,209 | $869.0K | 0.00% | +3,649+8.2% | Added |
| Dynamic Technology Lab Private Ltd | 48,600 | $876.0K | 0.12% | +48,600 | New |
| HSBC Holdings PLC | 52,399 | $946.9K | 0.00% | +27,041+106.6% | Added |
| Algert Global LLC | 53,493 | $963.9K | 0.02% | −136,751−71.9% | Reduced |
| AQR Capital Management LLC | 54,667 | $985.1K | 0.00% | +15,666+40.2% | Added |
| Lombard Odier Asset Management (USA) Corp | 60,411 | $1.09M | 0.27% | −2,725−4.3% | Reduced |
| Aldebaran Capital, LLC | 61,185 | $1.10M | 1.09% | −110−0.2% | Reduced |
| Susquehanna International Group, LLP | 63,691 | $1.15M | 0.00% | −11,154−14.9% | Reduced |
| Jump Financial, LLC | 64,895 | $1.17M | 0.01% | +64,895 | New |
| Alliancebernstein L.P. | 70,700 | $1.27M | 0.00% | +10,539+17.5% | Added |
| Boothbay Fund Management, LLC | 71,937 | $1.30M | 0.04% | +61,177+568.6% | Added |
| Lighthouse Investment Partners, LLC | 73,612 | $1.33M | 0.06% | +3,637+5.2% | Added |
| State of Wyoming | 77,469 | $1.40M | 0.17% | +77,469 | New |
| New York State Teachers Retirement System | 81,728 | $1.47M | 0.00% | −12,407−13.2% | Reduced |
| Two Sigma Investments, LP | 81,785 | $1.47M | 0.00% | −110,717−57.5% | Reduced |
| Winton Group Ltd | 84,497 | $1.52M | 0.08% | −1,004−1.2% | Reduced |
| Brevan Howard Capital Management LP | 85,302 | $1.54M | 0.02% | +66,701+358.6% | Added |
| Victory Capital Management Inc | 97,926 | $1.76M | 0.00% | +36,189+58.6% | Added |
| Prudential Financial Inc | 98,187 | $1.77M | 0.00% | −48,170−32.9% | Reduced |
| Intech Investment Management LLC | 99,163 | $1.79M | 0.02% | −35,850−26.6% | Reduced |
| Deutsche Bank AG | 100,353 | $1.81M | 0.00% | −6,594−6.2% | Reduced |
| LMR Partners LLP | 104,000 | $1.87M | 0.03% | −28,000−21.2% | Reduced |
| Encompass Capital Advisors LLC | 104,535 | $1.88M | 0.08% | −645,465−86.1% | Reduced |
| Barclays PLC | 104,765 | $1.89M | 0.00% | +10,312+10.9% | Added |
| Swiss National Bank | 105,750 | $1.91M | 0.00% | −2,200−2.0% | Reduced |
| BNP Paribas Arbitrage, SA | 113,964 | $2.05M | 0.00% | +16,959+17.5% | Added |
| Wells Fargo & Company | 115,166 | $2.08M | 0.00% | +4,765+4.3% | Added |
| Nuveen, LLC | 118,806 | $2.14M | 0.00% | −674,607−85.0% | Reduced |
| Raymond James Financial Inc | 123,415 | $2.22M | 0.00% | +20,809+20.3% | Added |
| Ameriprise Financial Inc | 130,180 | $2.35M | 0.00% | −10,984−7.8% | Reduced |
| Legal & General Group Plc | 132,443 | $2.39M | 0.00% | +4,252+3.3% | Added |
| SummitTX Capital, L.P. | 143,072 | $2.58M | 0.11% | −54,897−27.7% | Reduced |
| JPMorgan Chase & Co | 147,046 | $2.65M | 0.00% | +9,721+7.1% | Added |
| Rhumbline Advisers | 147,135 | $2.65M | 0.00% | +4,689+3.3% | Added |
| Antipodes Partners Ltd | 153,131 | $2.76M | 0.09% | +153,131 | New |
| Jane Street Group, LLC | 154,606 | $2.79M | 0.00% | −40,593−20.8% | Reduced |
| Renaissance Technologies LLC | 155,599 | $2.80M | 0.00% | +155,599 | New |
| American Century Companies Inc | 155,934 | $2.81M | 0.00% | +18,823+13.7% | Added |
| Public Sector Pension Investment Board | 178,097 | $3.21M | 0.01% | +13,264+8.0% | Added |
| Soviero Asset Management, LP | 190,000 | $3.42M | 2.51% | +190,000 | New |
| Jacobs Levy Equity Management, Inc | 190,674 | $3.44M | 0.01% | −8,586−4.3% | Reduced |
| Steamboat Capital Partners, LLC | 191,381 | $3.45M | 0.98% | −3,597−1.8% | Reduced |
| Hartree Partners, LP | 195,227 | $3.52M | 1.00% | +195,227 | New |
| Cohen & Steers, Inc. | 195,963 | $3.53M | 0.01% | −6,380−3.2% | Reduced |
| Assenagon Asset Management S.A. | 200,899 | $3.62M | 0.01% | −96,882−32.5% | Reduced |
| State of Wisconsin Investment Board | 203,588 | $3.67M | 0.01% | +51,817+34.1% | Added |
| CoreCommodity Management, LLC | 203,908 | $3.67M | 0.60% | +65,286+47.1% | Added |
| Congress Asset Management Co | 216,924 | $3.91M | 0.03% | −190.0% | Reduced |
| Thomist Capital Management, LP | 221,746 | $4.00M | 2.41% | +184,100+489.0% | Added |
| Goldman Sachs Group Inc | 224,714 | $4.05M | 0.00% | −154,634−40.8% | Reduced |
| Monaco Asset Management SAM | 230,000 | $4.14M | 1.57% | +92,500+67.3% | Added |
| Bastion Asset Management Inc. | 239,486 | $4.25M | 1.99% | +78,049+48.3% | Added |
| Balyasny Asset Management LLC | 247,106 | $4.45M | 0.01% | +68,168+38.1% | Added |
| Russell Investments Group, Ltd. | 250,325 | $4.51M | 0.01% | +120,950+93.5% | Added |
| Squarepoint Ops LLC | 252,331 | $4.55M | 0.01% | +147,087+139.8% | Added |
| Principal Financial Group Inc | 259,211 | $4.67M | 0.00% | −67,584−20.7% | Reduced |
| CSM Advisors, LLC | 261,953 | $4.72M | 0.14% | +261,953 | New |
| D. E. Shaw & Co., Inc. | 268,668 | $4.84M | 0.00% | +240,289+846.7% | Added |
| Royal Bank of Canada | 283,976 | $5.12M | 0.00% | +272,355+2,343.6% | Added |
| Verition Fund Management LLC | 284,433 | $5.13M | 0.03% | +250,080+728.0% | Added |
| Adage Capital Partners GP, L.L.C. | 290,000 | $5.23M | 0.01% | +35,000+13.7% | Added |
| Icon Advisers Inc | 325,200 | $5.86M | 1.34% | +325,200 | New |
| First Eagle Investment Management, LLC | 338,056 | $6.09M | 0.01% | −27,000−7.4% | Reduced |
| Bank of New York Mellon Corp | 343,584 | $6.19M | 0.00% | +542+0.2% | Added |
| UBS Asset Management Americas Inc | 383,996 | $6.92M | 0.00% | +259,995+209.7% | Added |
| South Dakota Investment Council | 438,419 | $7.90M | 0.15% | +159,745+57.3% | Added |
| Northern Trust Corp | 508,364 | $9.16M | 0.00% | −18,276−3.5% | Reduced |
| Millennium Management LLC | 512,517 | $9.24M | 0.01% | +478,716+1,416.3% | Added |
| Marshall Wace, LLP | 521,608 | $9.40M | 0.01% | +521,608 | New |
| Invesco Ltd. | 537,466 | $9.69M | 0.00% | −398,375−42.6% | Reduced |