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, Q3 2025
Institutional positions in Century Aluminum Co as of Sep 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
- 255
- +34 vs. Q2 2025
- Shares held
- 96.5M
- +980.6K (+1.0%) vs. Q2 2025
- Total value
- $2.83B
- +$1.11B (+64.6%) vs. Q2 2025
- New holders
- 67
- 83 more added
- Sold out
- 33
- 79 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Century Aluminum Co; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Invenomic Capital Management LP | 155,269 | $4.56M | 0.24% | +155,269 | New |
| Wells Fargo & Company | 156,420 | $4.59M | 0.00% | +41,254+35.8% | Added |
| Edgestream Partners, L.P. | 156,867 | $4.61M | 0.13% | +156,867 | New |
| Jane Street Group, LLC | 166,246 | $4.88M | 0.01% | +11,640+7.5% | Added |
| Monaco Asset Management SAM | 168,752 | $4.95M | 1.84% | −61,248−26.6% | Reduced |
| Trexquant Investment LP | 189,355 | $5.56M | 0.06% | +189,355 | New |
| Wellington Management Group LLP | 194,094 | $5.70M | 0.00% | −787,508−80.2% | Reduced |
| Cohen & Steers, Inc. | 199,000 | $5.84M | 0.01% | +3,037+1.5% | Added |
| D. E. Shaw & Co., Inc. | 201,594 | $5.92M | 0.00% | −67,074−25.0% | Reduced |
| Congress Asset Management Co | 202,609 | $5.95M | 0.04% | −14,315−6.6% | Reduced |
| Wexford Capital LP | 206,513 | $6.06M | 1.83% | −1,271,304−86.0% | Reduced |
| Public Sector Pension Investment Board | 207,521 | $6.09M | 0.02% | +29,424+16.5% | Added |
| Jefferies Financial Group Inc. | 213,350 | $6.26M | 0.06% | +213,350 | New |
| Hartree Partners, LP | 217,765 | $6.39M | 2.22% | +22,538+11.5% | Added |
| Susquehanna International Group, LLP | 218,151 | $6.40M | 0.01% | +154,460+242.5% | Added |
| Woodline Partners LP | 220,264 | $6.47M | 0.03% | −1,069,227−82.9% | Reduced |
| Icon Advisers Inc | 242,000 | $7.11M | 1.55% | −83,200−25.6% | Reduced |
| Russell Investments Group, Ltd. | 258,005 | $7.58M | 0.01% | +7,680+3.1% | Added |
| Royal Bank of Canada | 270,467 | $7.94M | 0.00% | −13,509−4.8% | Reduced |
| Adage Capital Partners GP, L.L.C. | 295,000 | $8.66M | 0.01% | +5,000+1.7% | Added |
| CSM Advisors, LLC | 298,204 | $8.76M | 0.24% | +36,251+13.8% | Added |
| Bank of New York Mellon Corp | 336,880 | $9.89M | 0.00% | −6,704−2.0% | Reduced |
| First Eagle Investment Management, LLC | 340,153 | $9.99M | 0.02% | +2,097+0.6% | Added |
| Principal Financial Group Inc | 350,858 | $10.3M | 0.01% | +91,647+35.4% | Added |
| Renaissance Technologies LLC | 365,099 | $10.7M | 0.01% | +209,500+134.6% | Added |
| South Dakota Investment Council | 381,161 | $11.2M | 0.22% | −57,258−13.1% | Reduced |
| Bank of America Corp | 397,231 | $11.7M | 0.00% | −605,166−60.4% | Reduced |
| Assenagon Asset Management S.A. | 407,939 | $12.0M | 0.02% | +207,040+103.1% | Added |
| JPMorgan Chase & Co | 424,252 | $12.5M | 0.00% | +277,206+188.5% | Added |
| Millennium Management LLC | 442,673 | $13.0M | 0.01% | −69,844−13.6% | Reduced |
| Steamboat Capital Partners, LLC | 471,929 | $13.9M | 3.61% | +280,548+146.6% | Added |
| UBS Group AG | 474,477 | $13.9M | 0.00% | −69,072−12.7% | Reduced |
| Northern Trust Corp | 518,162 | $15.2M | 0.00% | +9,798+1.9% | Added |
| Charles Schwab Investment Management Inc | 542,290 | $15.9M | 0.00% | −9,293−1.7% | Reduced |
| Goldman Sachs Group Inc | 550,103 | $16.2M | 0.00% | +325,389+144.8% | Added |
| Mountaineer Partners Management, LLC | 661,043 | $19.4M | 11.29% | −44,107−6.3% | Reduced |
| Impala Asset Management LLC | 689,000 | $20.2M | 12.56% | −114,894−14.3% | Reduced |
| American Century Companies Inc | 767,692 | $22.5M | 0.01% | +611,758+392.3% | Added |
| Voloridge Investment Management, LLC | 796,883 | $23.4M | 0.08% | +255,328+47.1% | Added |
| Encompass Capital Advisors LLC | 811,162 | $23.8M | 1.07% | +706,627+676.0% | Added |
| Qube Research & Technologies Ltd | 823,130 | $24.2M | 0.03% | +282,019+52.1% | Added |
| Invesco Ltd. | 849,522 | $24.9M | 0.00% | +312,056+58.1% | Added |
| UBS Asset Management Americas Inc | 859,900 | $25.2M | 0.01% | +475,904+123.9% | Added |
| Fisher Asset Management, LLC | 966,575 | $28.4M | 0.01% | −97,010−9.1% | Reduced |
| Boston Partners | 1,139,661 | $33.5M | 0.03% | −594,007−34.3% | Reduced |
| Geode Capital Management, LLC | 1,318,996 | $38.7M | 0.00% | +18,305+1.4% | Added |
| Morgan Stanley | 1,432,363 | $42.1M | 0.00% | +584,394+68.9% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 1,457,401 | $42.8M | 0.07% | +27,999+2.0% | Added |
| Citadel Advisors LLC | 1,505,696 | $44.2M | 0.04% | −416,961−21.7% | Reduced |
| Sourcerock Group LLC | 2,640,465 | $77.5M | 5.27% | +1,216,377+85.4% | Added |
| Dimensional Fund Advisors LP | 3,061,234 | $89.9M | 0.02% | −10,750−0.3% | Reduced |
| State Street Corp | 4,217,816 | $123.8M | 0.00% | +552,270+15.1% | Added |
| Vanguard Group Inc | 5,845,537 | $171.6M | 0.00% | +75,657+1.3% | Added |
| BlackRock, Inc. | 10,127,959 | $297.4M | 0.01% | −31,317−0.3% | Reduced |
| Glencore plc | 40,057,356 | $1.18B | 29.67% | +2,8480.0% | Added |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −521,608−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −247,106−100.0% | Sold out |
| Bastion Asset Management Inc. | 0 | $0 | 0.00% | −239,486−100.0% | Sold out |
| Jacobs Levy Equity Management, Inc | 0 | $0 | 0.00% | −190,674−100.0% | Sold out |
| Soviero Asset Management, LP | 0 | $0 | 0.00% | −190,000−100.0% | Sold out |
| Antipodes Partners Ltd | 0 | $0 | 0.00% | −153,131−100.0% | Sold out |
| SummitTX Capital, L.P. | 0 | $0 | 0.00% | −143,072−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −81,785−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −48,600−100.0% | Sold out |
| Jennison Associates LLC | 0 | $0 | 0.00% | −45,172−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −44,654−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −39,410−100.0% | Sold out |
| Orion Resource Partners LP | 0 | $0 | 0.00% | −34,147−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −31,497−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −27,666−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −25,943−100.0% | Sold out |
| 111 Capital | 0 | $0 | 0.00% | −18,909−100.0% | Sold out |
| Sanctuary Advisors, LLC | 0 | $0 | 0.00% | −18,465−100.0% | Sold out |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −14,556−100.0% | Sold out |
| ISAM Funds (UK) Ltd | 0 | $0 | 0.00% | −13,754−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −11,792−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −11,759−100.0% | Sold out |
| Bayforest Capital Ltd | 0 | $0 | 0.00% | −6,883−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −4,290−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −3,242−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −2,879−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −1,182−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −784−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −245−100.0% | Sold out |
| Sound Income Strategies, LLC | 0 | $0 | 0.00% | −212−100.0% | Sold out |
| Riggs Asset Managment Co. Inc. | 0 | $0 | 0.00% | −38−100.0% | Sold out |
| NewSquare Capital LLC | 0 | $0 | 0.00% | −36−100.0% | Sold out |
| Bryn Mawr Trust Co | 0 | $0 | 0.00% | −14−100.0% | Sold out |
| Atria Wealth Solutions, Inc. | – | – | – | – | Not filed |