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 |
|---|---|---|---|---|---|
| Franklin Resources Inc | 46,548 | $1.37M | 0.00% | +1,624+3.6% | Added |
| Great West Life Assurance Co | 44,856 | $1.32M | 0.00% | −3,353−7.0% | Reduced |
| Schonfeld Strategic Advisors LLC | 44,348 | $1.30M | 0.01% | +44,348 | New |
| Squarepoint Ops LLC | 44,292 | $1.30M | 0.00% | −208,039−82.4% | Reduced |
| SummerHaven Investment Management, LLC | 43,479 | $1.28M | 0.74% | +43,479 | New |
| Segall Bryant & Hamill, LLC | 41,569 | $1.22M | 0.02% | +41,569 | New |
| Parallax Volatility Advisers, L.P. | 39,616 | $1.16M | 0.03% | +39,616 | New |
| Thrivent Financial for Lutherans | 38,382 | $1.13M | 0.00% | −38−0.1% | Reduced |
| Occudo Quantitative Strategies LP | 36,739 | $1.08M | 0.13% | +36,739 | New |
| Numerai GP LLC | 33,997 | $998.2K | 0.14% | +12,472+57.9% | Added |
| Quantbot Technologies LP | 33,829 | $993.2K | 0.03% | −7,551−18.2% | Reduced |
| New Century Financial Group, LLC | 33,623 | $987.2K | 1.75% | +33,623 | New |
| Teacher Retirement System of Texas | 33,249 | $976.2K | 0.00% | −6,381−16.1% | Reduced |
| Group One Trading, L.P. | 32,275 | $947.6K | 0.03% | +32,275 | New |
| Convergence Investment Partners, LLC | 32,078 | $941.8K | 0.21% | +32,078 | New |
| MetLife Investment Management | 31,298 | $918.9K | 0.00% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 30,163 | $884.0K | 0.01% | −961−3.1% | Reduced |
| Omers Administration Corp | 30,100 | $883.7K | 0.01% | +30,100 | New |
| Cambria Investment Management, L.P. | 29,842 | $876.2K | 0.05% | +5,967+25.0% | Added |
| Bank of Montreal | 29,822 | $875.6K | 0.00% | −10,337−25.7% | Reduced |
| Illinois Municipal Retirement Fund | 27,376 | $803.8K | 0.01% | +4,661+20.5% | Added |
| Standard Life Aberdeen plc | 27,297 | $801.4K | 0.00% | +14,253+109.3% | Added |
| Entropy Technologies, LP | 26,123 | $767.0K | 0.06% | +26,123 | New |
| PFG Advisors | 25,911 | $760.7K | 0.03% | +25,911 | New |
| Manufacturers Life Insurance Company, The | 25,174 | $739.1K | 0.00% | +5,686+29.2% | Added |
| HSBC Holdings PLC | 24,890 | $731.0K | 0.00% | −27,509−52.5% | Reduced |
| Quarry LP | 24,701 | $725.2K | 0.18% | +24,449+9,702.0% | Added |
| Louisiana State Employees Retirement System | 24,500 | $719.3K | 0.01% | +100+0.4% | Added |
| Lighthouse Investment Partners, LLC | 24,479 | $718.7K | 0.03% | −49,133−66.7% | Reduced |
| CenterBook Partners LP | 24,003 | $704.7K | 0.03% | +24,003 | New |
| State Board of Administration of Florida Retirement System | 23,219 | $681.7K | 0.00% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 22,906 | $672.4K | 0.00% | 00.0% | Unchanged |
| Gotham Asset Management, LLC | 22,586 | $663.1K | 0.00% | +5,939+35.7% | Added |
| Sheets Smith Investment Management | 22,196 | $651.7K | 0.42% | +22,196 | New |
| Allspring Global Investments Holdings, LLC | 21,779 | $640.3K | 0.00% | +21,779 | New |
| Wolverine Trading, LLC | 21,227 | $624.0K | 0.01% | +21,227 | New |
| SG Americas Securities, LLC | 20,637 | $606.0K | 0.00% | +10,997+114.1% | Added |
| Gsa Capital Partners LLP | 20,057 | $589.0K | 0.05% | −7,723−27.8% | Reduced |
| XTX Topco Ltd | 20,054 | $588.8K | 0.03% | +8,588+74.9% | Added |
| Hodges Capital Management Inc. | 20,000 | $587.2K | 0.05% | 00.0% | Unchanged |
| Natixis Advisors, L.P. | 19,859 | $583.0K | 0.00% | +799+4.2% | Added |
| Perennial Advisors, LLC | 19,368 | $568.6K | 0.10% | −10,000−34.1% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 17,678 | $519.0K | 0.00% | +5,107+40.6% | Added |
| Scientech Research LLC | 17,660 | $518.5K | 0.18% | +17,660 | New |
| Massar Capital Management, LP | 17,250 | $506.5K | 0.18% | +17,250 | New |
| Citigroup Inc | 16,849 | $494.7K | 0.00% | −29,184−63.4% | Reduced |
| Virginia Retirement Systems Et Al | 16,700 | $490.3K | 0.00% | −9,700−36.7% | Reduced |
| Arizona State Retirement System | 16,562 | $486.3K | 0.00% | +411+2.5% | Added |
| Yousif Capital Management, LLC | 16,453 | $483.1K | 0.01% | −2,934−15.1% | Reduced |
| Comerica Bank | 16,216 | $476.1K | 0.00% | −2,632−14.0% | Reduced |
| Integrated Wealth Concepts LLC | 16,106 | $472.9K | 0.00% | −1,536−8.7% | Reduced |
| Federated Hermes, Inc. | 15,416 | $452.6K | 0.00% | −7,038−31.3% | Reduced |
| Amalgamated Bank | 15,376 | $451.0K | 0.00% | +548+3.7% | Added |
| New York State Common Retirement Fund | 15,344 | $450.5K | 0.00% | 00.0% | Unchanged |
| Oxford Asset Management LLP | 15,108 | $443.6K | 0.15% | +15,108 | New |
| Teachers Retirement System of the State of Kentucky | 14,827 | $435.0K | 0.00% | −3,109−17.3% | Reduced |
| Callan Family Office, LLC | 14,706 | $431.8K | 0.01% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 14,466 | $424.7K | 0.00% | +2,521+21.1% | Added |
| Jump Financial, LLC | 14,409 | $423.0K | 0.01% | −50,486−77.8% | Reduced |
| Neuberger Berman Group LLC | 13,612 | $399.6K | 0.00% | −365−2.6% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 13,549 | $397.8K | 0.00% | +134+1.0% | Added |
| Lido Advisors, LLC | 12,715 | $373.3K | 0.00% | +141+1.1% | Added |
| Three Seasons Wealth, LLC | 12,639 | $371.1K | 0.04% | −12,397−49.5% | Reduced |
| State of Tennessee, Treasury Department | 12,620 | $370.5K | 0.00% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 12,002 | $352.4K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 11,163 | $327.7K | 0.00% | +11,163 | New |
| Pathstone Holdings, LLC | 11,152 | $327.4K | 0.00% | +11,152 | New |
| KLP Kapitalforvaltning AS | 10,900 | $320.0K | 0.00% | 00.0% | Unchanged |
| JustInvest LLC | 10,669 | $313.2K | 0.00% | −588−5.2% | Reduced |
| Park Avenue Securities LLC | 10,236 | $301.0K | 0.00% | −10,889−51.5% | Reduced |
| Quantinno Capital Management LP | 10,168 | $298.5K | 0.00% | +10,168 | New |
| Commonwealth Equity Services, LLC | 10,032 | $295.0K | 0.00% | +10,032 | New |
| Quest Partners LLC | 9,984 | $293.1K | 0.02% | −966−8.8% | Reduced |
| ProShare Advisors LLC | 9,961 | $292.5K | 0.00% | −1,705−14.6% | Reduced |
| PharVision Advisers, LLC | 9,879 | $290.0K | 0.16% | +9,879 | New |
| Voya Investment Management LLC | 9,452 | $277.5K | 0.00% | −4,918−34.2% | Reduced |
| Sheets Smith Wealth Management | 9,349 | $274.5K | 0.03% | +9,349 | New |
| Polymer Capital Management (US) LLC | 9,297 | $273.0K | 0.04% | −14,203−60.4% | Reduced |
| Mercer Global Advisors Inc | 9,296 | $272.9K | 0.00% | +9,296 | New |
| Guggenheim Capital LLC | 9,254 | $271.7K | 0.00% | +9,254 | New |
| Cerity Partners LLC | 9,226 | $270.9K | 0.00% | +9,226 | New |
| Covestor Ltd | 7,899 | $232.0K | 0.13% | −2,384−23.2% | Reduced |
| Everence Capital Management Inc | 7,750 | $228.0K | 0.01% | +7,750 | New |
| Maryland State Retirement & Pension System | 7,613 | $223.5K | 0.00% | −7,568−49.9% | Reduced |
| Journey Strategic Wealth LLC | 7,550 | $221.7K | 0.01% | +7,550 | New |
| Fox Run Management, L.L.C. | 7,324 | $215.0K | 0.03% | −28,222−79.4% | Reduced |
| Madrona Financial Services, LLC | 7,250 | $212.9K | 0.05% | +7,250 | New |
| Axq Capital, LP | 7,125 | $209.2K | 0.08% | +7,125 | New |
| FNY Investment Advisers, LLC | 7,140 | $209.0K | 0.07% | +7,140 | New |
| Vise Technologies, Inc. | 7,071 | $207.6K | 0.01% | +7,071 | New |
| EntryPoint Capital, LLC | 7,039 | $206.7K | 0.08% | +7,039 | New |
| GTS Securities LLC | 6,925 | $203.3K | 0.01% | +6,925 | New |
| FMR LLC | 5,921 | $173.9K | 0.00% | +117+2.0% | Added |
| The PNC Financial Services Group, Inc. | 4,527 | $132.9K | 0.00% | +113+2.6% | Added |
| Ameritas Investment Partners, Inc. | 4,414 | $129.6K | 0.00% | −777−15.0% | Reduced |
| GAMMA Investing LLC | 4,182 | $122.8K | 0.01% | −50−1.2% | Reduced |
| Mark Sheptoff Financial Planning, LLC | 4,100 | $120.4K | 0.06% | +4,100 | New |
| Tower Research Capital LLC (TRC) | 3,839 | $112.7K | 0.00% | −8,255−68.3% | Reduced |
| Point72 Asia (Singapore) Pte. Ltd. | 3,823 | $112.3K | 0.02% | +3,823 | New |
| Point72 (DIFC) Ltd | 3,502 | $102.8K | 0.01% | +3,502 | New |