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 |
|---|---|---|---|---|---|
| Impala Asset Management LLC | 1,035,000 | $47.6M | 27.00% | +60,000+6.2% | Added |
| Goldman Sachs Group Inc | 1,049,276 | $48.3M | 0.01% | +670,128+176.7% | Added |
| Millennium Management LLC | 1,116,217 | $51.4M | 0.03% | −871,408−43.8% | Reduced |
| Morgan Stanley | 1,510,756 | $69.5M | 0.00% | −74,474−4.7% | Reduced |
| Assenagon Asset Management S.A. | 1,531,167 | $70.4M | 0.09% | −299,157−16.3% | Reduced |
| Fisher Asset Management, LLC | 1,534,405 | $70.6M | 0.02% | +683,104+80.2% | Added |
| Geode Capital Management, LLC | 1,846,800 | $85.0M | 0.00% | +306,588+19.9% | Added |
| FMR LLC | 1,960,353 | $90.2M | 0.00% | −699,701−26.3% | Reduced |
| Dimensional Fund Advisors LP | 2,211,502 | $101.8M | 0.02% | +20,580+0.9% | Added |
| Sourcerock Group LLC | 2,266,085 | $104.3M | 5.42% | −421,164−15.7% | Reduced |
| Invesco Ltd. | 2,417,794 | $111.2M | 0.01% | +341,266+16.4% | Added |
| Vanguard Capital Management LLC | 2,972,532 | $136.8M | 0.00% | +386,425+14.9% | Added |
| Vanguard Portfolio Management LLC | 4,773,720 | $219.6M | 0.01% | +532,163+12.5% | Added |
| State Street Corp | 5,542,720 | $255.0M | 0.01% | +875,180+18.8% | Added |
| BlackRock, Inc. | 10,304,905 | $474.1M | 0.01% | +1,294,526+14.4% | Added |
| Glencore plc | 29,690,702 | $1.37B | 28.07% | 00.0% | Unchanged |
| Bornite Capital Management LP | 0 | $0 | 0.00% | −542,000−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −279,161−100.0% | Sold out |
| Wealth High Governance Asset Management Ltda. | 0 | $0 | 0.00% | −259,475−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −232,034−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −195,992−100.0% | Sold out |
| Burkehill Global Management, LP | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Wealth High Governance Capital Ltda | 0 | $0 | 0.00% | −140,525−100.0% | Sold out |
| Portolan Capital Management, LLC | 0 | $0 | 0.00% | −95,039−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −85,714−100.0% | Sold out |
| Moore Capital Management, LP | 0 | $0 | 0.00% | −82,752−100.0% | Sold out |
| Riggs Asset Managment Co. Inc. | 0 | $0 | 0.00% | −63,292−100.0% | Sold out |
| Axiom Investors LLC | 0 | $0 | 0.00% | −58,610−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −54,645−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −44,268−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −31,518−100.0% | Sold out |
| Harvest Investment Services, LLC | 0 | $0 | 0.00% | −25,720−100.0% | Sold out |
| Sigma Planning Corp | 0 | $0 | 0.00% | −22,158−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −20,487−100.0% | Sold out |
| Fieldview Capital Management, LLC | 0 | $0 | 0.00% | −19,000−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −14,998−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −14,604−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −14,589−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −14,383−100.0% | Sold out |
| Oceanic Investment Management LTD | 0 | $0 | 0.00% | −12,553−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −11,754−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −10,650−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −10,627−100.0% | Sold out |
| Independent Financial Group, LLC | 0 | $0 | 0.00% | −8,350−100.0% | Sold out |
| Summit Global Investments | 0 | $0 | 0.00% | −7,866−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −7,593−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −7,437−100.0% | Sold out |
| Numerai GP LLC | 0 | $0 | 0.00% | −7,100−100.0% | Sold out |
| Anb Bank | 0 | $0 | 0.00% | −6,106−100.0% | Sold out |
| Baird Financial Group, Inc. | 0 | $0 | 0.00% | −5,473−100.0% | Sold out |
| RSM US Wealth Management LLC | 0 | $0 | 0.00% | −5,386−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −5,014−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −4,908−100.0% | Sold out |
| Marex Group plc | 0 | $0 | 0.00% | −4,600−100.0% | Sold out |
| Vise Technologies, Inc. | 0 | $0 | 0.00% | −6,616−100.0% | Sold out |
| Moran Wealth Management, LLC | 0 | $0 | 0.00% | −4,248−100.0% | Sold out |
| Keebeck Alpha, LP | 0 | $0 | 0.00% | −3,915−100.0% | Sold out |
| CI Private Wealth, LLC | 0 | $0 | 0.00% | −3,775−100.0% | Sold out |
| Leavell Investment Management, Inc. | 0 | $0 | 0.00% | −3,765−100.0% | Sold out |
| Madrona Financial Services, LLC | 0 | $0 | 0.00% | −3,680−100.0% | Sold out |
| Wiley Bros.-Aintree Capital, LLC | 0 | $0 | 0.00% | −3,608−100.0% | Sold out |
| Brinker Capital Investments, LLC | 0 | $0 | 0.00% | −3,593−100.0% | Sold out |
| Everence Capital Management Inc | 0 | $0 | 0.00% | −3,551−100.0% | Sold out |
| O'Shaughnessy Asset Management, LLC | 0 | $0 | 0.00% | −3,477−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −1,190−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −717−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −477−100.0% | Sold out |
| Delos Wealth Advisors, LLC | 0 | $0 | 0.00% | −425−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −164−100.0% | Sold out |
| Sound Income Strategies, LLC | 0 | $0 | 0.00% | −146−100.0% | Sold out |
| Annis Gardner Whiting Capital Advisors, LLC | 0 | $0 | 0.00% | −147−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −114−100.0% | Sold out |
| Vermillion Wealth Management, Inc. | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −16−100.0% | Sold out |
| Curio Wealth, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Janus Henderson Group PLC | – | – | – | – | Not filed |
| Journey Strategic Wealth LLC | – | – | – | – | Not filed |
| Skopos Labs, Inc. | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |