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 |
|---|---|---|---|---|---|
| Glencore plc | 29,690,702 | $1.74B | 29.46% | −6,315,245−17.5% | Reduced |
| BlackRock, Inc. | 9,010,379 | $528.8M | 0.01% | −474,188−5.0% | Reduced |
| State Street Corp | 4,667,540 | $273.9M | 0.01% | +371,829+8.7% | Added |
| Vanguard Portfolio Management LLC | 4,241,557 | $248.9M | 0.01% | +4,241,557 | New |
| Sourcerock Group LLC | 2,687,249 | $157.7M | 6.63% | −934,735−25.8% | Reduced |
| FMR LLC | 2,660,054 | $156.1M | 0.01% | +2,651,348+30,454.3% | Added |
| Vanguard Capital Management LLC | 2,586,107 | $151.8M | 0.00% | +2,586,107 | New |
| Dimensional Fund Advisors LP | 2,190,922 | $128.6M | 0.03% | −574,210−20.8% | Reduced |
| Invesco Ltd. | 2,076,528 | $121.9M | 0.01% | +1,447,116+229.9% | Added |
| Millennium Management LLC | 1,987,625 | $116.7M | 0.09% | +569,593+40.2% | Added |
| Assenagon Asset Management S.A. | 1,830,324 | $107.4M | 0.17% | +957,571+109.7% | Added |
| Morgan Stanley | 1,585,230 | $93.0M | 0.01% | −23,863−1.5% | Reduced |
| Encompass Capital Advisors LLC | 1,551,362 | $91.0M | 3.71% | +1,051,525+210.4% | Added |
| Geode Capital Management, LLC | 1,540,212 | $90.4M | 0.01% | +221,709+16.8% | Added |
| D. E. Shaw & Co., Inc. | 1,433,369 | $84.1M | 0.07% | +242,432+20.4% | Added |
| Jane Street Group, LLC | 1,320,942 | $77.5M | 0.08% | +1,279,424+3,081.6% | Added |
| Citadel Advisors LLC | 1,320,867 | $77.5M | 0.05% | +623,650+89.4% | Added |
| Impala Asset Management LLC | 975,000 | $57.2M | 26.66% | +117,195+13.7% | Added |
| Fisher Asset Management, LLC | 851,301 | $50.0M | 0.02% | −15,643−1.8% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 800,131 | $46.9M | 0.06% | −693,692−46.4% | Reduced |
| Bridgewater Associates, LP | 732,517 | $43.0M | 0.19% | +460,719+169.5% | Added |
| Voloridge Investment Management, LLC | 720,735 | $42.3M | 0.17% | −219,590−23.4% | Reduced |
| Bank of America Corp | 608,794 | $35.7M | 0.00% | +301,268+98.0% | Added |
| Allspring Global Investments Holdings, LLC | 562,030 | $35.7M | 0.06% | +106,154+23.3% | Added |
| Deutsche Bank AG | 598,025 | $35.1M | 0.01% | +489,747+452.3% | Added |
| Qube Research & Technologies Ltd | 589,928 | $34.6M | 0.05% | −136,264−18.8% | Reduced |
| UBS Group AG | 586,766 | $34.4M | 0.01% | −524,507−47.2% | Reduced |
| Mountaineer Partners Management, LLC | 583,997 | $34.3M | 17.02% | −24,478−4.0% | Reduced |
| Point72 Asset Management, L.P. | 569,451 | $33.4M | 0.06% | +397,043+230.3% | Added |
| Northern Trust Corp | 548,744 | $32.2M | 0.00% | +26,982+5.2% | Added |
| Charles Schwab Investment Management Inc | 544,511 | $32.0M | 0.00% | +8,587+1.6% | Added |
| Bornite Capital Management LP | 542,000 | $31.8M | 5.35% | +292,000+116.8% | Added |
| Kinetic Partners Management, LP | 531,700 | $31.2M | 1.75% | +531,700 | New |
| Merewether Investment Management, LP | 514,800 | $30.2M | 0.58% | +514,800 | New |
| Jefferies Financial Group Inc. | 484,193 | $28.4M | 0.35% | +377,493+353.8% | Added |
| JPMorgan Chase & Co | 516,623 | $27.5M | 0.00% | +302,450+141.2% | Added |
| Rokos Capital Management LLP | 436,688 | $25.6M | 0.46% | +436,688 | New |
| Squarepoint Ops LLC | 410,093 | $24.1M | 0.05% | +372,874+1,001.8% | Added |
| Goldman Sachs Group Inc | 379,148 | $22.3M | 0.00% | −286,554−43.0% | Reduced |
| Wellington Management Group LLP | 378,447 | $22.2M | 0.00% | +180,604+91.3% | Added |
| Vanguard Fiduciary Trust Co | 378,295 | $22.2M | 0.01% | +378,295 | New |
| Westend Capital Management, LLC | 378,073 | $22.2M | 6.66% | +3,799+1.0% | Added |
| Bank of New York Mellon Corp | 335,864 | $19.7M | 0.00% | +463+0.1% | Added |
| Boston Partners | 309,896 | $18.2M | 0.02% | −290,341−48.4% | Reduced |
| Nuveen, LLC | 308,977 | $18.1M | 0.00% | +191,667+163.4% | Added |
| BW Gestao de Investimentos Ltda. | 308,758 | $18.1M | 0.81% | +125,089+68.1% | Added |
| Engineers Gate Manager LP | 297,509 | $17.5M | 0.22% | +247,985+500.7% | Added |
| Picton Mahoney Asset Management | 295,330 | $17.3M | 0.18% | +295,330 | New |
| Nicholas Investment Partners, LP | 292,402 | $17.2M | 1.24% | +1,442+0.5% | Added |
| Drummond Knight Asset Management Pty Ltd | 281,092 | $16.5M | 5.84% | −32,284−10.3% | Reduced |
| Tudor Investment Corp Et Al | 279,161 | $16.4M | 0.09% | −86,696−23.7% | Reduced |
| Steamboat Capital Partners, LLC | 276,248 | $16.2M | 4.03% | −147,560−34.8% | Reduced |
| Great West Life Assurance Co | 275,405 | $16.2M | 0.03% | +158,894+136.4% | Added |
| Royce & Associates LP | 264,341 | $15.5M | 0.15% | −49,948−15.9% | Reduced |
| Principal Financial Group Inc | 260,426 | $15.3M | 0.01% | −140,211−35.0% | Reduced |
| Wealth High Governance Asset Management Ltda. | 259,475 | $15.2M | 2.38% | +106,909+70.1% | Added |
| Congress Asset Management Co | 253,435 | $14.9M | 0.11% | +46,996+22.8% | Added |
| CDC Financial, Inc. | 246,680 | $14.5M | 11.99% | −97,520−28.3% | Reduced |
| Public Sector Pension Investment Board | 243,897 | $14.3M | 0.04% | +59,554+32.3% | Added |
| American Century Companies Inc | 232,034 | $13.6M | 0.01% | −742,207−76.2% | Reduced |
| Bank of Montreal | 227,736 | $13.4M | 0.01% | +193,267+560.7% | Added |
| Yaupon Capital Management LP | 211,201 | $12.4M | 0.61% | +211,201 | New |
| HRT Financial LP | 195,992 | $11.5M | 0.03% | +122,490+166.6% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 184,061 | $10.8M | 0.02% | +126,461+219.6% | Added |
| Icon Advisers Inc | 173,200 | $10.2M | 2.35% | −68,800−28.4% | Reduced |
| AQR Capital Management LLC | 166,233 | $9.76M | 0.00% | +100,928+154.5% | Added |
| First Eagle Investment Management, LLC | 163,087 | $9.57M | 0.02% | −138,525−45.9% | Reduced |
| CIBC World Markets Inc. | 160,632 | $9.43M | 0.02% | +160,632 | New |
| Rhumbline Advisers | 158,208 | $9.29M | 0.01% | +6,859+4.5% | Added |
| Systematic Financial Management LP | 157,722 | $9.26M | 0.21% | −8,805−5.3% | Reduced |
| CSM Advisors, LLC | 155,684 | $9.14M | 0.22% | −68,496−30.6% | Reduced |
| Wells Fargo & Company | 151,938 | $8.92M | 0.00% | −54,753−26.5% | Reduced |
| Burkehill Global Management, LP | 150,000 | $8.80M | 0.44% | −350,000−70.0% | Reduced |
| Insight Wealth Strategies, LLC | 146,024 | $8.57M | 0.96% | −8,042−5.2% | Reduced |
| Barclays PLC | 143,299 | $8.41M | 0.00% | +38,480+36.7% | Added |
| Wealth High Governance Capital Ltda | 140,525 | $8.25M | 2.48% | +43,091+44.2% | Added |
| Renaissance Technologies LLC | 139,499 | $8.19M | 0.01% | +21,500+18.2% | Added |
| Franklin Resources Inc | 124,816 | $7.33M | 0.00% | +77,436+163.4% | Added |
| Cohen & Steers, Inc. | 118,183 | $6.94M | 0.01% | −24,586−17.2% | Reduced |
| BNP Paribas Arbitrage, SA | 113,252 | $6.65M | 0.00% | +14,173+14.3% | Added |
| Legal & General Group Plc | 112,563 | $6.61M | 0.00% | −12,841−10.2% | Reduced |
| Swiss National Bank | 110,450 | $6.48M | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 109,592 | $6.43M | 0.00% | −20,667−15.9% | Reduced |
| Alliancebernstein L.P. | 159,508 | $6.25M | 0.00% | +84,190+111.8% | Added |
| Edgestream Partners, L.P. | 105,739 | $6.21M | 0.20% | −51,685−32.8% | Reduced |
| Bessemer Group Inc | 102,496 | $6.02M | 0.01% | +103+0.1% | Added |
| Ameriprise Financial Inc | 100,631 | $5.91M | 0.00% | +3,081+3.2% | Added |
| State of Wisconsin Investment Board | 100,242 | $5.88M | 0.01% | −73,697−42.4% | Reduced |
| UBS Asset Management Americas Inc | 96,317 | $5.65M | 0.00% | −650,770−87.1% | Reduced |
| Balyasny Asset Management LLC | 95,068 | $5.58M | 0.01% | +95,068 | New |
| Portolan Capital Management, LLC | 95,039 | $5.58M | 0.30% | +95,039 | New |
| Y-Intercept (Hong Kong) Ltd | 90,400 | $5.31M | 0.10% | −50,800−36.0% | Reduced |
| Caxton Associates LLP | 88,690 | $5.21M | 0.12% | −12,759−12.6% | Reduced |
| EAM Investors, LLC | 85,714 | $5.03M | 0.58% | −8,913−9.4% | Reduced |
| Boothbay Fund Management, LLC | 82,945 | $4.87M | 0.11% | −64,850−43.9% | Reduced |
| Envestnet Asset Management Inc | 82,822 | $4.86M | 0.00% | +7,697+10.2% | Added |
| Moore Capital Management, LP | 82,752 | $4.86M | 0.18% | +82,752 | New |
| GeoSphere Capital Management, LLC | 82,000 | $4.81M | 2.90% | +82,000 | New |
| Susquehanna International Group, LLP | 78,472 | $4.61M | 0.01% | −132,011−62.7% | Reduced |
| Neuberger Berman Group LLC | 73,151 | $4.29M | 0.00% | +60,345+471.2% | Added |