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 |
|---|---|---|---|---|---|
| Oregon Public Employees Retirement Fund | 12,763 | $587.2K | 0.01% | +600+4.9% | Added |
| South Dakota Investment Council | 12,840 | $591.0K | 0.01% | −17,647−57.9% | Reduced |
| Dockside LLC | 13,298 | $611.8K | 0.14% | +13,298 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 13,378 | $615.5K | 0.00% | +221+1.7% | Added |
| JustInvest LLC | 13,639 | $627.5K | 0.01% | +366+2.8% | Added |
| Allstate Corp | 13,683 | $629.6K | 0.01% | +113+0.8% | Added |
| Winton Group Ltd | 13,900 | $639.5K | 0.02% | −5,700−29.1% | Reduced |
| Quantinno Capital Management LP | 13,924 | $640.6K | 0.00% | +928+7.1% | Added |
| Fifth Third Bancorp | 14,275 | $656.8K | 0.00% | +27+0.2% | Added |
| Callan Family Office, LLC | 14,340 | $659.8K | 0.01% | +36+0.3% | Added |
| Sheets Smith Wealth Management | 14,594 | $671.5K | 0.07% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 14,673 | $675.1K | 0.09% | +6,668+83.3% | Added |
| Yousif Capital Management, LLC | 14,791 | $680.5K | 0.01% | +583+4.1% | Added |
| Concurrent Investment Advisors, LLC | 15,030 | $691.5K | 0.01% | −2,899−16.2% | Reduced |
| KLP Kapitalforvaltning AS | 15,100 | $694.8K | 0.00% | +2,700+21.8% | Added |
| Alphadyne Asset Management LP | 15,187 | $698.8K | 0.03% | −4,813−24.1% | Reduced |
| Cetera Investment Advisers | 15,468 | $711.7K | 0.00% | −28,144−64.5% | Reduced |
| Kestra Advisory Services, LLC | 15,515 | $713.8K | 0.00% | +15,515 | New |
| Amalgamated Bank | 15,529 | $714.0K | 0.00% | +222+1.5% | Added |
| Chesapeake Asset Management LLC | 16,818 | $727.4K | 0.56% | +4,558+37.2% | Added |
| Janney Montgomery Scott LLC | 16,353 | $752.0K | 0.00% | +16,353 | New |
| Vanguard Investments Australia, Ltd. | 16,971 | $780.8K | 0.00% | +3,603+27.0% | Added |
| Aristeia Capital LLC | 17,052 | $784.6K | 0.01% | +7,713+82.6% | Added |
| HSBC Holdings PLC | 17,285 | $803.9K | 0.00% | +2,786+19.2% | Added |
| New Age Alpha Advisors, LLC | 17,481 | $804.3K | 0.03% | +16,044+1,116.5% | Added |
| Caxton Associates LLP | 17,736 | $816.0K | 0.02% | −70,954−80.0% | Reduced |
| State Board of Administration of Florida Retirement System | 18,408 | $847.0K | 0.00% | 00.0% | Unchanged |
| Arizona State Retirement System | 18,434 | $848.1K | 0.00% | +3,052+19.8% | Added |
| Standard Life Aberdeen plc | 18,859 | $867.7K | 0.00% | −6,732−26.3% | Reduced |
| Schroder Investment Management Group | 18,694 | $870.2K | 0.00% | +8,110+76.6% | Added |
| State of Tennessee, Treasury Department | 19,905 | $915.8K | 0.00% | −1,167−5.5% | Reduced |
| Hodges Capital Management Inc. | 20,000 | $920.2K | 0.06% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 20,491 | $942.8K | 0.00% | +11,471+127.2% | Added |
| Jump Financial, LLC | 20,633 | $949.3K | 0.01% | −31,043−60.1% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 20,700 | $952.4K | 0.01% | +5,356+34.9% | Added |
| Handelsbanken Fonder AB | 20,817 | $958.0K | 0.00% | +20,817 | New |
| Truist Financial Corp | 21,264 | $978.4K | 0.00% | +577+2.8% | Added |
| Polymer Capital Management (US) LLC | 21,727 | $999.7K | 0.15% | +11,727+117.3% | Added |
| State of Alaska, Department of Revenue | 22,078 | $1.01M | 0.01% | −7,685−25.8% | Reduced |
| Virginia Retirement Systems Et Al | 22,700 | $1.04M | 0.01% | +8,700+62.1% | Added |
| MML Investors Services, LLC | 23,346 | $1.07M | 0.00% | +2,618+12.6% | Added |
| State of New Jersey Common Pension Fund D | 23,501 | $1.08M | 0.00% | −19,336−45.1% | Reduced |
| Horizon Investments, LLC | 24,458 | $1.13M | 0.01% | +24,458 | New |
| Prelude Capital Management, LLC | 24,524 | $1.13M | 0.08% | −14,962−37.9% | Reduced |
| Louisiana State Employees Retirement System | 24,700 | $1.14M | 0.02% | +1,100+4.7% | Added |
| Jones Financial Companies LLLP | 25,844 | $1.20M | 0.00% | +11,167+76.1% | Added |
| Vanguard Global Advisers, LLC | 26,406 | $1.21M | 0.00% | +1,686+6.8% | Added |
| Voya Investment Management LLC | 26,547 | $1.22M | 0.00% | +11,371+74.9% | Added |
| FCG Investment Co | 27,410 | $1.26M | 0.44% | +17,001+163.3% | Added |
| Two Sigma Investments, LP | 27,571 | $1.27M | 0.00% | +27,571 | New |
| Legato Capital Management LLC | 27,676 | $1.27M | 0.11% | −13,278−32.4% | Reduced |
| CenterBook Partners LP | 28,356 | $1.30M | 0.06% | +28,356 | New |
| SummitTX Capital, L.P. | 29,189 | $1.34M | 0.04% | −27,885−48.9% | Reduced |
| Aquatic Capital Management LLC | 29,204 | $1.34M | 0.05% | −28,176−49.1% | Reduced |
| Ci Investments Inc. | 29,246 | $1.35M | 0.00% | +29,246 | New |
| Jupiter Topco LLC | 29,885 | $1.38M | 0.00% | +29,885 | New |
| MYDA Advisors LLC | 30,000 | $1.38M | 0.34% | +30,000 | New |
| Brevan Howard Capital Management LP | 30,005 | $1.38M | 0.02% | −164−0.5% | Reduced |
| Federated Hermes, Inc. | 30,297 | $1.39M | 0.00% | −23,899−44.1% | Reduced |
| Creative Planning | 31,307 | $1.44M | 0.00% | +2,077+7.1% | Added |
| Headlands Technologies LLC | 31,413 | $1.45M | 0.15% | −17,490−35.8% | Reduced |
| Illinois Municipal Retirement Fund | 31,479 | $1.45M | 0.02% | +7,275+30.1% | Added |
| GeoSphere Capital Management, LLC | 32,000 | $1.47M | 0.76% | −50,000−61.0% | Reduced |
| Advisory Services Network, LLC | 32,516 | $1.50M | 0.02% | −749−2.3% | Reduced |
| Atom Investors LP | 32,581 | $1.50M | 0.13% | +32,581 | New |
| Kovitz Investment Group Partners, LLC | 32,728 | $1.51M | 0.03% | +32,728 | New |
| PVG Asset Management Corp | 33,098 | $1.52M | 0.88% | 00.0% | Unchanged |
| OP Asset Management Ltd | 33,142 | $1.52M | 0.02% | +15,459+87.4% | Added |
| Main Management ETF Advisors, LLC | 33,363 | $1.53M | 0.05% | +33,363 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 34,710 | $1.60M | 0.00% | +2,655+8.3% | Added |
| Omers Administration Corp | 35,000 | $1.61M | 0.01% | +35,000 | New |
| Royal Bank of Canada | 36,117 | $1.66M | 0.00% | +8,315+29.9% | Added |
| Riverwater Partners LLC | 37,318 | $1.72M | 0.51% | +14,668+64.8% | Added |
| Algert Global LLC | 38,853 | $1.79M | 0.02% | +814+2.1% | Added |
| Convergence Investment Partners, LLC | 40,373 | $1.86M | 0.18% | +40,373 | New |
| MetLife Investment Management | 40,876 | $1.88M | 0.01% | +9,850+31.7% | Added |
| SummerHaven Investment Management, LLC | 41,364 | $1.90M | 1.02% | 00.0% | Unchanged |
| Intech Investment Management LLC | 41,591 | $1.91M | 0.02% | −66−0.2% | Reduced |
| Blue Jean Financial LLC | 43,289 | $1.99M | 1.39% | +43,289 | New |
| Teachers Retirement System of the State of Kentucky | 43,648 | $2.01M | 0.01% | +16,750+62.3% | Added |
| SEI Investments Co | 44,104 | $2.03M | 0.00% | −10,058−18.6% | Reduced |
| Engineers Gate Manager LP | 45,738 | $2.10M | 0.03% | −251,771−84.6% | Reduced |
| Allianz Asset Management GmbH | 45,945 | $2.11M | 0.00% | +45,945 | New |
| Empowered Funds, LLC | 46,031 | $2.12M | 0.01% | +39,151+569.1% | Added |
| Walleye Capital LLC | 46,202 | $2.13M | 0.01% | +7,243+18.6% | Added |
| Manufacturers Life Insurance Company, The | 46,518 | $2.14M | 0.00% | +18,598+66.6% | Added |
| Natixis Advisors, L.P. | 46,757 | $2.15M | 0.00% | +9,806+26.5% | Added |
| New York State Common Retirement Fund | 46,794 | $2.15M | 0.00% | −4,107−8.1% | Reduced |
| Walleye Trading LLC | 46,878 | $2.16M | 0.03% | +46,878 | New |
| SG Americas Securities, LLC | 48,116 | $2.21M | 0.00% | +34,588+255.7% | Added |
| Sagefield Capital LP | 49,099 | $2.26M | 0.17% | +9,533+24.1% | Added |
| CAPROCK Group, Inc. | 49,175 | $2.26M | 0.04% | +34+0.1% | Added |
| Ruffer LLP | 49,494 | $2.27M | 0.08% | −356−0.7% | Reduced |
| XTX Topco Ltd | 50,407 | $2.32M | 0.03% | +30,241+150.0% | Added |
| Aldebaran Capital, LLC | 51,995 | $2.39M | 1.80% | −5,575−9.7% | Reduced |
| FORA Capital, LLC | 52,743 | $2.43M | 0.17% | +6,301+13.6% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 55,337 | $2.55M | 0.00% | +55,337 | New |
| Voleon Capital Management LP | 56,016 | $2.58M | 0.05% | −8,868−13.7% | Reduced |
| VGI Partners Ltd | 57,343 | $2.64M | 0.15% | +57,343 | New |
| Man Group plc | 60,517 | $2.78M | 0.01% | +60,517 | New |