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 |
|---|---|---|---|---|---|
| Qube Research & Technologies Ltd | 541,111 | $9.75M | 0.01% | +329,298+155.5% | Added |
| Voloridge Investment Management, LLC | 541,555 | $9.76M | 0.04% | +408,064+305.7% | Added |
| UBS Group AG | 543,549 | $9.79M | 0.00% | +89,377+19.7% | Added |
| Charles Schwab Investment Management Inc | 551,583 | $9.94M | 0.00% | +13,856+2.6% | Added |
| Mountaineer Partners Management, LLC | 705,150 | $12.7M | 8.40% | +65,777+10.3% | Added |
| Impala Asset Management LLC | 803,894 | $14.5M | 9.17% | −128,260−13.8% | Reduced |
| Morgan Stanley | 847,969 | $15.3M | 0.00% | −287,070−25.3% | Reduced |
| Wellington Management Group LLP | 981,602 | $17.7M | 0.00% | +287,850+41.5% | Added |
| Bank of America Corp | 1,002,397 | $18.1M | 0.00% | +372,877+59.2% | Added |
| Fisher Asset Management, LLC | 1,063,585 | $19.2M | 0.01% | −260,008−19.6% | Reduced |
| Woodline Partners LP | 1,289,491 | $23.2M | 0.12% | +248,679+23.9% | Added |
| Geode Capital Management, LLC | 1,300,691 | $23.4M | 0.00% | +6,397+0.5% | Added |
| Sourcerock Group LLC | 1,424,088 | $25.7M | 1.34% | +1,224,088+612.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 1,429,402 | $25.8M | 0.05% | −33,607−2.3% | Reduced |
| Wexford Capital LP | 1,477,817 | $26.6M | 7.43% | +308,264+26.4% | Added |
| Boston Partners | 1,733,668 | $31.2M | 0.03% | +1,339,744+340.1% | Added |
| Citadel Advisors LLC | 1,922,657 | $34.6M | 0.03% | −63,986−3.2% | Reduced |
| Dimensional Fund Advisors LP | 3,071,984 | $55.4M | 0.01% | +234,133+8.3% | Added |
| State Street Corp | 3,665,546 | $66.1M | 0.00% | +426,306+13.2% | Added |
| Vanguard Group Inc | 5,769,880 | $104.0M | 0.00% | +55,480+1.0% | Added |
| BlackRock, Inc. | 10,159,276 | $183.1M | 0.00% | +266,591+2.7% | Added |
| Glencore plc | 40,054,508 | $721.8M | 85.65% | +16,4770.0% | Added |
| Pertento Partners LLP | 0 | $0 | 0.00% | −733,885−100.0% | Sold out |
| Penn Capital Management Co Inc | 0 | $0 | 0.00% | −518,374−100.0% | Sold out |
| Park West Asset Management LLC | 0 | $0 | 0.00% | −309,258−100.0% | Sold out |
| Alberta Investment Management Corp | 0 | $0 | 0.00% | −265,000−100.0% | Sold out |
| First Trust Advisors LP | 0 | $0 | 0.00% | −241,985−100.0% | Sold out |
| GeoSphere Capital Management, LLC | 0 | $0 | 0.00% | −177,174−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −103,129−100.0% | Sold out |
| Bridgewater Associates, LP | 0 | $0 | 0.00% | −73,514−100.0% | Sold out |
| Segall Bryant & Hamill, LLC | 0 | $0 | 0.00% | −73,336−100.0% | Sold out |
| Norges Bank | 0 | $0 | 0.00% | −71,152−100.0% | Sold out |
| Senator Investment Group LP | 0 | $0 | 0.00% | −68,991−100.0% | Sold out |
| Wealth High Governance Capital Ltda | 0 | $0 | 0.00% | −61,999−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −59,186−100.0% | Sold out |
| Empowered Funds, LLC | 0 | $0 | 0.00% | −59,186−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −42,865−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −40,337−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −38,180−100.0% | Sold out |
| BW Gestao de Investimentos Ltda. | 0 | $0 | 0.00% | −38,001−100.0% | Sold out |
| Caxton Associates LLP | 0 | $0 | 0.00% | −34,115−100.0% | Sold out |
| Compass Wealth Management LLC | 0 | $0 | 0.00% | −32,200−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −28,376−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −27,541−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −22,701−100.0% | Sold out |
| Aristeia Capital LLC | 0 | $0 | 0.00% | −21,979−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| IHT Wealth Management, LLC | 0 | $0 | 0.00% | −18,333−100.0% | Sold out |
| Levin Capital Strategies, L.P. | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −13,055−100.0% | Sold out |
| Polymer Capital Management (HK) LTD | 0 | $0 | 0.00% | −12,200−100.0% | Sold out |
| CIBC World Markets Corp | 0 | $0 | 0.00% | −11,714−100.0% | Sold out |
| Cerity Partners LLC | 0 | $0 | 0.00% | −10,451−100.0% | Sold out |
| Coldstream Capital Management Inc | 0 | $0 | 0.00% | −2,845−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −639−100.0% | Sold out |
| Hexagon Capital Partners LLC | 0 | $0 | 0.00% | −305−100.0% | Sold out |
| Rise Advisors, LLC | 0 | $0 | 0.00% | −76−100.0% | Sold out |
| Rialto Wealth Management, LLC | 0 | $0 | 0.00% | −56−100.0% | Sold out |
| Stephens Consulting, LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| Foundry Partners, LLC | – | – | – | – | Not filed |
| Pinpoint Asset Management Ltd | – | – | – | – | Not filed |
| Lindbrook Capital, LLC | – | – | – | – | Not filed |