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 2026
Institutional positions in Century Aluminum Co as of Jun 30, 2026. 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
- 416
- +33 vs. Q1 2026
- Shares held
- 104.1M
- +3.15M (+3.1%) vs. Q1 2026
- Total value
- $4.79B
- −$1.13B (−19.1%) vs. Q1 2026
- New holders
- 92
- 173 more added
- Sold out
- 59
- 111 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding Century Aluminum Co; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Price T Rowe Associates Inc | 85,846 | $3.95M | 0.00% | +23,346+37.4% | Added |
| Orion Resource Partners LP | 83,768 | $3.85M | 1.76% | +14,931+21.7% | Added |
| Jane Street Group, LLC | 81,564 | $3.75M | 0.00% | −1,239,378−93.8% | Reduced |
| Lighthouse Investment Partners, LLC | 79,343 | $3.65M | 0.11% | +55,927+238.8% | Added |
| Edgestream Partners, L.P. | 77,775 | $3.58M | 0.11% | −27,964−26.4% | Reduced |
| Citigroup Inc | 77,032 | $3.54M | 0.00% | +50,760+193.2% | Added |
| California State Teachers Retirement System | 76,827 | $3.53M | 0.00% | +12,883+20.1% | Added |
| IMC-Chicago, LLC | 74,506 | $3.43M | 0.03% | +61,826+487.6% | Added |
| LPL Financial LLC | 72,548 | $3.34M | 0.00% | +26,897+58.9% | Added |
| Marnell Management LLC | 71,516 | $3.29M | 1.67% | +26,218+57.9% | Added |
| Himension Fund | 70,667 | $3.25M | 0.20% | +55,391+362.6% | Added |
| Segall Bryant & Hamill, LLC | 68,023 | $3.13M | 0.04% | −4,062−5.6% | Reduced |
| Wexford Capital LP | 67,900 | $3.12M | 0.43% | +12,000+21.5% | Added |
| Vanguard Asset Management, Ltd | 62,243 | $2.86M | 0.00% | +10,671+20.7% | Added |
| New York State Teachers Retirement System | 61,131 | $2.81M | 0.01% | +3,947+6.9% | Added |
| Thrivent Financial for Lutherans | 61,131 | $2.81M | 0.00% | +25,617+72.1% | Added |
| Man Group plc | 60,517 | $2.78M | 0.01% | +60,517 | New |
| VGI Partners Ltd | 57,343 | $2.64M | 0.15% | +57,343 | New |
| Voleon Capital Management LP | 56,016 | $2.58M | 0.05% | −8,868−13.7% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 55,337 | $2.55M | 0.00% | +55,337 | New |
| FORA Capital, LLC | 52,743 | $2.43M | 0.17% | +6,301+13.6% | Added |
| Aldebaran Capital, LLC | 51,995 | $2.39M | 1.80% | −5,575−9.7% | Reduced |
| XTX Topco Ltd | 50,407 | $2.32M | 0.03% | +30,241+150.0% | Added |
| Ruffer LLP | 49,494 | $2.27M | 0.08% | −356−0.7% | Reduced |
| CAPROCK Group, Inc. | 49,175 | $2.26M | 0.04% | +34+0.1% | Added |
| Sagefield Capital LP | 49,099 | $2.26M | 0.17% | +9,533+24.1% | Added |
| SG Americas Securities, LLC | 48,116 | $2.21M | 0.00% | +34,588+255.7% | Added |
| Walleye Trading LLC | 46,878 | $2.16M | 0.03% | +46,878 | New |
| New York State Common Retirement Fund | 46,794 | $2.15M | 0.00% | −4,107−8.1% | Reduced |
| Natixis Advisors, L.P. | 46,757 | $2.15M | 0.00% | +9,806+26.5% | Added |
| Manufacturers Life Insurance Company, The | 46,518 | $2.14M | 0.00% | +18,598+66.6% | Added |
| Walleye Capital LLC | 46,202 | $2.13M | 0.01% | +7,243+18.6% | Added |
| Empowered Funds, LLC | 46,031 | $2.12M | 0.01% | +39,151+569.1% | Added |
| Allianz Asset Management GmbH | 45,945 | $2.11M | 0.00% | +45,945 | New |
| Engineers Gate Manager LP | 45,738 | $2.10M | 0.03% | −251,771−84.6% | Reduced |
| SEI Investments Co | 44,104 | $2.03M | 0.00% | −10,058−18.6% | Reduced |
| Teachers Retirement System of the State of Kentucky | 43,648 | $2.01M | 0.01% | +16,750+62.3% | Added |
| Blue Jean Financial LLC | 43,289 | $1.99M | 1.39% | +43,289 | New |
| Intech Investment Management LLC | 41,591 | $1.91M | 0.02% | −66−0.2% | Reduced |
| SummerHaven Investment Management, LLC | 41,364 | $1.90M | 1.02% | 00.0% | Unchanged |
| MetLife Investment Management | 40,876 | $1.88M | 0.01% | +9,850+31.7% | Added |
| Convergence Investment Partners, LLC | 40,373 | $1.86M | 0.18% | +40,373 | New |
| Algert Global LLC | 38,853 | $1.79M | 0.02% | +814+2.1% | Added |
| Riverwater Partners LLC | 37,318 | $1.72M | 0.51% | +14,668+64.8% | Added |
| Royal Bank of Canada | 36,117 | $1.66M | 0.00% | +8,315+29.9% | Added |
| Omers Administration Corp | 35,000 | $1.61M | 0.01% | +35,000 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 34,710 | $1.60M | 0.00% | +2,655+8.3% | Added |
| Main Management ETF Advisors, LLC | 33,363 | $1.53M | 0.05% | +33,363 | New |
| OP Asset Management Ltd | 33,142 | $1.52M | 0.02% | +15,459+87.4% | Added |
| PVG Asset Management Corp | 33,098 | $1.52M | 0.88% | 00.0% | Unchanged |
| Kovitz Investment Group Partners, LLC | 32,728 | $1.51M | 0.03% | +32,728 | New |
| Atom Investors LP | 32,581 | $1.50M | 0.13% | +32,581 | New |
| Advisory Services Network, LLC | 32,516 | $1.50M | 0.02% | −749−2.3% | Reduced |
| GeoSphere Capital Management, LLC | 32,000 | $1.47M | 0.76% | −50,000−61.0% | Reduced |
| Illinois Municipal Retirement Fund | 31,479 | $1.45M | 0.02% | +7,275+30.1% | Added |
| Headlands Technologies LLC | 31,413 | $1.45M | 0.15% | −17,490−35.8% | Reduced |
| Creative Planning | 31,307 | $1.44M | 0.00% | +2,077+7.1% | Added |
| Federated Hermes, Inc. | 30,297 | $1.39M | 0.00% | −23,899−44.1% | Reduced |
| Brevan Howard Capital Management LP | 30,005 | $1.38M | 0.02% | −164−0.5% | Reduced |
| MYDA Advisors LLC | 30,000 | $1.38M | 0.34% | +30,000 | New |
| Jupiter Topco LLC | 29,885 | $1.38M | 0.00% | +29,885 | New |
| Ci Investments Inc. | 29,246 | $1.35M | 0.00% | +29,246 | New |
| Aquatic Capital Management LLC | 29,204 | $1.34M | 0.05% | −28,176−49.1% | Reduced |
| SummitTX Capital, L.P. | 29,189 | $1.34M | 0.04% | −27,885−48.9% | Reduced |
| CenterBook Partners LP | 28,356 | $1.30M | 0.06% | +28,356 | New |
| Legato Capital Management LLC | 27,676 | $1.27M | 0.11% | −13,278−32.4% | Reduced |
| Two Sigma Investments, LP | 27,571 | $1.27M | 0.00% | +27,571 | New |
| FCG Investment Co | 27,410 | $1.26M | 0.44% | +17,001+163.3% | Added |
| Voya Investment Management LLC | 26,547 | $1.22M | 0.00% | +11,371+74.9% | Added |
| Vanguard Global Advisers, LLC | 26,406 | $1.21M | 0.00% | +1,686+6.8% | Added |
| Jones Financial Companies LLLP | 25,844 | $1.20M | 0.00% | +11,167+76.1% | Added |
| Louisiana State Employees Retirement System | 24,700 | $1.14M | 0.02% | +1,100+4.7% | Added |
| Prelude Capital Management, LLC | 24,524 | $1.13M | 0.08% | −14,962−37.9% | Reduced |
| Horizon Investments, LLC | 24,458 | $1.13M | 0.01% | +24,458 | New |
| State of New Jersey Common Pension Fund D | 23,501 | $1.08M | 0.00% | −19,336−45.1% | Reduced |
| MML Investors Services, LLC | 23,346 | $1.07M | 0.00% | +2,618+12.6% | Added |
| Virginia Retirement Systems Et Al | 22,700 | $1.04M | 0.01% | +8,700+62.1% | Added |
| State of Alaska, Department of Revenue | 22,078 | $1.01M | 0.01% | −7,685−25.8% | Reduced |
| Polymer Capital Management (US) LLC | 21,727 | $999.7K | 0.15% | +11,727+117.3% | Added |
| Truist Financial Corp | 21,264 | $978.4K | 0.00% | +577+2.8% | Added |
| Handelsbanken Fonder AB | 20,817 | $958.0K | 0.00% | +20,817 | New |
| Police & Firemen's Retirement System of New Jersey | 20,700 | $952.4K | 0.01% | +5,356+34.9% | Added |
| Jump Financial, LLC | 20,633 | $949.3K | 0.01% | −31,043−60.1% | Reduced |
| Advisor Group Holdings, Inc. | 20,491 | $942.8K | 0.00% | +11,471+127.2% | Added |
| Hodges Capital Management Inc. | 20,000 | $920.2K | 0.06% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 19,905 | $915.8K | 0.00% | −1,167−5.5% | Reduced |
| Schroder Investment Management Group | 18,694 | $870.2K | 0.00% | +8,110+76.6% | Added |
| Standard Life Aberdeen plc | 18,859 | $867.7K | 0.00% | −6,732−26.3% | Reduced |
| Arizona State Retirement System | 18,434 | $848.1K | 0.00% | +3,052+19.8% | Added |
| State Board of Administration of Florida Retirement System | 18,408 | $847.0K | 0.00% | 00.0% | Unchanged |
| Caxton Associates LLP | 17,736 | $816.0K | 0.02% | −70,954−80.0% | Reduced |
| New Age Alpha Advisors, LLC | 17,481 | $804.3K | 0.03% | +16,044+1,116.5% | Added |
| HSBC Holdings PLC | 17,285 | $803.9K | 0.00% | +2,786+19.2% | Added |
| Aristeia Capital LLC | 17,052 | $784.6K | 0.01% | +7,713+82.6% | Added |
| Vanguard Investments Australia, Ltd. | 16,971 | $780.8K | 0.00% | +3,603+27.0% | Added |
| Janney Montgomery Scott LLC | 16,353 | $752.0K | 0.00% | +16,353 | New |
| Chesapeake Asset Management LLC | 16,818 | $727.4K | 0.56% | +4,558+37.2% | Added |
| Amalgamated Bank | 15,529 | $714.0K | 0.00% | +222+1.5% | Added |
| Kestra Advisory Services, LLC | 15,515 | $713.8K | 0.00% | +15,515 | New |
| Cetera Investment Advisers | 15,468 | $711.7K | 0.00% | −28,144−64.5% | Reduced |