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, Q1 2026
Institutional positions in Century Aluminum Co as of Mar 31, 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
- 387
- +66 vs. Q4 2025
- Shares held
- 101.0M
- +8.01M (+8.6%) vs. Q4 2025
- Total value
- $5.92B
- +$2.28B (+62.6%) vs. Q4 2025
- New holders
- 107
- 130 more added
- Sold out
- 41
- 122 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Century Aluminum Co; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ameriprise Financial Inc | 100,631 | $5.91M | 0.00% | +3,081+3.2% | Added |
| Bessemer Group Inc | 102,496 | $6.02M | 0.01% | +103+0.1% | Added |
| Edgestream Partners, L.P. | 105,739 | $6.21M | 0.20% | −51,685−32.8% | Reduced |
| Alliancebernstein L.P. | 159,508 | $6.25M | 0.00% | +84,190+111.8% | Added |
| Raymond James Financial Inc | 109,592 | $6.43M | 0.00% | −20,667−15.9% | Reduced |
| Swiss National Bank | 110,450 | $6.48M | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 112,563 | $6.61M | 0.00% | −12,841−10.2% | Reduced |
| BNP Paribas Arbitrage, SA | 113,252 | $6.65M | 0.00% | +14,173+14.3% | Added |
| Cohen & Steers, Inc. | 118,183 | $6.94M | 0.01% | −24,586−17.2% | Reduced |
| Franklin Resources Inc | 124,816 | $7.33M | 0.00% | +77,436+163.4% | Added |
| Renaissance Technologies LLC | 139,499 | $8.19M | 0.01% | +21,500+18.2% | Added |
| Wealth High Governance Capital Ltda | 140,525 | $8.25M | 2.48% | +43,091+44.2% | Added |
| Barclays PLC | 143,299 | $8.41M | 0.00% | +38,480+36.7% | Added |
| Insight Wealth Strategies, LLC | 146,024 | $8.57M | 0.96% | −8,042−5.2% | Reduced |
| Burkehill Global Management, LP | 150,000 | $8.80M | 0.44% | −350,000−70.0% | Reduced |
| Wells Fargo & Company | 151,938 | $8.92M | 0.00% | −54,753−26.5% | Reduced |
| CSM Advisors, LLC | 155,684 | $9.14M | 0.22% | −68,496−30.6% | Reduced |
| Systematic Financial Management LP | 157,722 | $9.26M | 0.21% | −8,805−5.3% | Reduced |
| Rhumbline Advisers | 158,208 | $9.29M | 0.01% | +6,859+4.5% | Added |
| CIBC World Markets Inc. | 160,632 | $9.43M | 0.02% | +160,632 | New |
| First Eagle Investment Management, LLC | 163,087 | $9.57M | 0.02% | −138,525−45.9% | Reduced |
| AQR Capital Management LLC | 166,233 | $9.76M | 0.00% | +100,928+154.5% | Added |
| Icon Advisers Inc | 173,200 | $10.2M | 2.35% | −68,800−28.4% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 184,061 | $10.8M | 0.02% | +126,461+219.6% | Added |
| HRT Financial LP | 195,992 | $11.5M | 0.03% | +122,490+166.6% | Added |
| Yaupon Capital Management LP | 211,201 | $12.4M | 0.61% | +211,201 | New |
| Bank of Montreal | 227,736 | $13.4M | 0.01% | +193,267+560.7% | Added |
| American Century Companies Inc | 232,034 | $13.6M | 0.01% | −742,207−76.2% | Reduced |
| Public Sector Pension Investment Board | 243,897 | $14.3M | 0.04% | +59,554+32.3% | Added |
| CDC Financial, Inc. | 246,680 | $14.5M | 11.99% | −97,520−28.3% | Reduced |
| Congress Asset Management Co | 253,435 | $14.9M | 0.11% | +46,996+22.8% | Added |
| Wealth High Governance Asset Management Ltda. | 259,475 | $15.2M | 2.38% | +106,909+70.1% | Added |
| Principal Financial Group Inc | 260,426 | $15.3M | 0.01% | −140,211−35.0% | Reduced |
| Royce & Associates LP | 264,341 | $15.5M | 0.15% | −49,948−15.9% | Reduced |
| Great West Life Assurance Co | 275,405 | $16.2M | 0.03% | +158,894+136.4% | Added |
| Steamboat Capital Partners, LLC | 276,248 | $16.2M | 4.03% | −147,560−34.8% | Reduced |
| Tudor Investment Corp Et Al | 279,161 | $16.4M | 0.09% | −86,696−23.7% | Reduced |
| Drummond Knight Asset Management Pty Ltd | 281,092 | $16.5M | 5.84% | −32,284−10.3% | Reduced |
| Nicholas Investment Partners, LP | 292,402 | $17.2M | 1.24% | +1,442+0.5% | Added |
| Picton Mahoney Asset Management | 295,330 | $17.3M | 0.18% | +295,330 | New |
| Engineers Gate Manager LP | 297,509 | $17.5M | 0.22% | +247,985+500.7% | Added |
| BW Gestao de Investimentos Ltda. | 308,758 | $18.1M | 0.81% | +125,089+68.1% | Added |
| Nuveen, LLC | 308,977 | $18.1M | 0.00% | +191,667+163.4% | Added |
| Boston Partners | 309,896 | $18.2M | 0.02% | −290,341−48.4% | Reduced |
| Bank of New York Mellon Corp | 335,864 | $19.7M | 0.00% | +463+0.1% | Added |
| Westend Capital Management, LLC | 378,073 | $22.2M | 6.66% | +3,799+1.0% | Added |
| Vanguard Fiduciary Trust Co | 378,295 | $22.2M | 0.01% | +378,295 | New |
| Wellington Management Group LLP | 378,447 | $22.2M | 0.00% | +180,604+91.3% | Added |
| Goldman Sachs Group Inc | 379,148 | $22.3M | 0.00% | −286,554−43.0% | Reduced |
| Squarepoint Ops LLC | 410,093 | $24.1M | 0.05% | +372,874+1,001.8% | Added |
| Rokos Capital Management LLP | 436,688 | $25.6M | 0.46% | +436,688 | New |
| JPMorgan Chase & Co | 516,623 | $27.5M | 0.00% | +302,450+141.2% | Added |
| Jefferies Financial Group Inc. | 484,193 | $28.4M | 0.35% | +377,493+353.8% | Added |
| Merewether Investment Management, LP | 514,800 | $30.2M | 0.58% | +514,800 | New |
| Kinetic Partners Management, LP | 531,700 | $31.2M | 1.75% | +531,700 | New |
| Bornite Capital Management LP | 542,000 | $31.8M | 5.35% | +292,000+116.8% | Added |
| Charles Schwab Investment Management Inc | 544,511 | $32.0M | 0.00% | +8,587+1.6% | Added |
| Northern Trust Corp | 548,744 | $32.2M | 0.00% | +26,982+5.2% | Added |
| Point72 Asset Management, L.P. | 569,451 | $33.4M | 0.06% | +397,043+230.3% | Added |
| Mountaineer Partners Management, LLC | 583,997 | $34.3M | 17.02% | −24,478−4.0% | Reduced |
| UBS Group AG | 586,766 | $34.4M | 0.01% | −524,507−47.2% | Reduced |
| Qube Research & Technologies Ltd | 589,928 | $34.6M | 0.05% | −136,264−18.8% | Reduced |
| Deutsche Bank AG | 598,025 | $35.1M | 0.01% | +489,747+452.3% | Added |
| Allspring Global Investments Holdings, LLC | 562,030 | $35.7M | 0.06% | +106,154+23.3% | Added |
| Bank of America Corp | 608,794 | $35.7M | 0.00% | +301,268+98.0% | Added |
| Voloridge Investment Management, LLC | 720,735 | $42.3M | 0.17% | −219,590−23.4% | Reduced |
| Bridgewater Associates, LP | 732,517 | $43.0M | 0.19% | +460,719+169.5% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 800,131 | $46.9M | 0.06% | −693,692−46.4% | Reduced |
| Fisher Asset Management, LLC | 851,301 | $50.0M | 0.02% | −15,643−1.8% | Reduced |
| Impala Asset Management LLC | 975,000 | $57.2M | 26.66% | +117,195+13.7% | Added |
| Citadel Advisors LLC | 1,320,867 | $77.5M | 0.05% | +623,650+89.4% | Added |
| Jane Street Group, LLC | 1,320,942 | $77.5M | 0.08% | +1,279,424+3,081.6% | Added |
| D. E. Shaw & Co., Inc. | 1,433,369 | $84.1M | 0.07% | +242,432+20.4% | Added |
| Geode Capital Management, LLC | 1,540,212 | $90.4M | 0.01% | +221,709+16.8% | Added |
| Encompass Capital Advisors LLC | 1,551,362 | $91.0M | 3.71% | +1,051,525+210.4% | Added |
| Morgan Stanley | 1,585,230 | $93.0M | 0.01% | −23,863−1.5% | Reduced |
| Assenagon Asset Management S.A. | 1,830,324 | $107.4M | 0.17% | +957,571+109.7% | Added |
| Millennium Management LLC | 1,987,625 | $116.7M | 0.09% | +569,593+40.2% | Added |
| Invesco Ltd. | 2,076,528 | $121.9M | 0.01% | +1,447,116+229.9% | Added |
| Dimensional Fund Advisors LP | 2,190,922 | $128.6M | 0.03% | −574,210−20.8% | Reduced |
| Vanguard Capital Management LLC | 2,586,107 | $151.8M | 0.00% | +2,586,107 | New |
| FMR LLC | 2,660,054 | $156.1M | 0.01% | +2,651,348+30,454.3% | Added |
| Sourcerock Group LLC | 2,687,249 | $157.7M | 6.63% | −934,735−25.8% | Reduced |
| Vanguard Portfolio Management LLC | 4,241,557 | $248.9M | 0.01% | +4,241,557 | New |
| State Street Corp | 4,667,540 | $273.9M | 0.01% | +371,829+8.7% | Added |
| BlackRock, Inc. | 9,010,379 | $528.8M | 0.01% | −474,188−5.0% | Reduced |
| Glencore plc | 29,690,702 | $1.74B | 29.46% | −6,315,245−17.5% | Reduced |
| Antipodes Partners Ltd | 0 | $0 | 0.00% | −423,789−100.0% | Sold out |
| BCJ Capital Management, LLC | 0 | $0 | 0.00% | −281,376−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −250,562−100.0% | Sold out |
| Kailix Advisors LLC | 0 | $0 | 0.00% | −146,550−100.0% | Sold out |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −120,000−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −115,294−100.0% | Sold out |
| Thomist Capital Management, LP | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −97,144−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −83,374−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −79,343−100.0% | Sold out |
| Monaco Asset Management SAM | 0 | $0 | 0.00% | −65,000−100.0% | Sold out |
| Parallax Volatility Advisers, L.P. | 0 | $0 | 0.00% | −61,314−100.0% | Sold out |
| Fort Baker Capital Management LP | 0 | $0 | 0.00% | −60,000−100.0% | Sold out |