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 |
|---|---|---|---|---|---|
| Farther Finance Advisors, LLC | 1,290 | $81.9K | 0.00% | +51+4.1% | Added |
| CoreCap Advisors, LLC | 1,387 | $81.4K | 0.00% | −1,265−47.7% | Reduced |
| Nisa Investment Advisors, LLC | 1,360 | $79.8K | 0.00% | +444+48.5% | Added |
| Covestor Ltd | 1,306 | $76.0K | 0.05% | −6,674−83.6% | Reduced |
| Signature Equity Partners, LLC | 1,263 | $74.1K | 0.04% | −40−3.1% | Reduced |
| Pinnacle Wealth Planning Services, Inc. | 1,234 | $72.4K | 0.01% | +32+2.7% | Added |
| Quadrant Capital Group LLC | 1,190 | $69.8K | 0.00% | +409+52.4% | Added |
| Leonteq Securities AG | 1,144 | $67.1K | 0.00% | +1,144 | New |
| Northwestern Mutual Wealth Management Co | 965 | $56.6K | 0.00% | +165+20.6% | Added |
| Larson Financial Group LLC | 869 | $51.0K | 0.00% | +278+47.0% | Added |
| IFP Advisors, Inc | 852 | $50.0K | 0.00% | +840+7,000.0% | Added |
| Assetmark, Inc | 838 | $49.2K | 0.00% | −17−2.0% | Reduced |
| Harbour Investments, Inc. | 817 | $48.0K | 0.00% | +594+266.4% | Added |
| Huntington National Bank | 800 | $47.0K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 800 | $47.0K | 0.00% | +800 | New |
| Clear Street Markets LLC | 717 | $42.1K | 0.02% | +717 | New |
| Salomon & Ludwin, LLC | 660 | $41.3K | 0.00% | +286+76.5% | Added |
| Versant Capital Management, Inc | 512 | $30.0K | 0.00% | +4+0.8% | Added |
| Hollencrest Capital Management | 500 | $29.3K | 0.00% | +500 | New |
| MAI Capital Management | 477 | $28.0K | 0.00% | −16−3.2% | Reduced |
| Private Trust Co NA | 470 | $27.6K | 0.00% | −250−34.7% | Reduced |
| Kemnay Advisory Services Inc. | 470 | $27.6K | 0.00% | +470 | New |
| US Bancorp | 461 | $27.1K | 0.00% | −454−49.6% | Reduced |
| Grove Bank & Trust | 457 | $26.8K | 0.00% | 00.0% | Unchanged |
| Delos Wealth Advisors, LLC | 425 | $24.9K | 0.01% | +425 | New |
| Sterling Capital Management LLC | 369 | $21.7K | 0.00% | +18+5.1% | Added |
| SRS Capital Advisors, Inc. | 365 | $21.4K | 0.00% | −536−59.5% | Reduced |
| NBC Securities, Inc. | 349 | $20.5K | 0.00% | −191−35.4% | Reduced |
| Whittier Trust Co of Nevada Inc | 310 | $20.0K | 0.00% | +310 | New |
| Umb Bank N A | 337 | $19.8K | 0.00% | +6+1.8% | Added |
| Allworth Financial LP | 331 | $19.4K | 0.00% | +231+231.0% | Added |
| Smartleaf Asset Management LLC | 278 | $14.8K | 0.00% | −907−76.5% | Reduced |
| Financial Consulate, Inc | 250 | $14.7K | 0.00% | 00.0% | Unchanged |
| Carolina Wealth Advisors, LLC | 243 | $14.3K | 0.01% | +243 | New |
| First Horizon Corp | 232 | $13.6K | 0.00% | 00.0% | Unchanged |
| WPG Advisers, LLC | 230 | $13.5K | 0.01% | 00.0% | Unchanged |
| Fortitude Family Office, LLC | 203 | $11.9K | 0.00% | +79+63.7% | Added |
| Cassaday & Co Wealth Management LLC | 186 | $10.9K | 0.00% | +186 | New |
| Parallel Advisors, LLC | 174 | $10.2K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 169 | $9.92K | 0.00% | +142+525.9% | Added |
| Twin Peaks Wealth Advisors, LLC | 164 | $9.63K | 0.00% | +164 | New |
| Sound Income Strategies, LLC | 146 | $9.27K | 0.00% | 00.0% | Unchanged |
| Harbor Capital Advisors, Inc. | 159 | $9.00K | 0.00% | +12+8.2% | Added |
| UMA Financial Services, Inc. | 151 | $8.86K | 0.00% | 00.0% | Unchanged |
| Annis Gardner Whiting Capital Advisors, LLC | 147 | $8.63K | 0.00% | +113+332.4% | Added |
| Rothschild Investment LLC | 143 | $8.39K | 0.00% | +16+12.6% | Added |
| Kilter Group LLC | 130 | $7.63K | 0.00% | +2+1.6% | Added |
| Root Financial Partners, LLC | 114 | $6.69K | 0.00% | +114 | New |
| Parkside Financial Bank & Trust | 105 | $6.16K | 0.00% | +1+1.0% | Added |
| Keating Financial Advisory Services, Inc. | 104 | $6.10K | 0.00% | +104 | New |
| Capital Advisors, Ltd. LLC | 107 | $6.00K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 100 | $5.87K | 0.00% | +50+100.0% | Added |
| Financially Speaking Inc | 93 | $5.46K | 0.03% | +93 | New |
| Bare Financial Services, Inc | 77 | $4.52K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 77 | $4.52K | 0.00% | +12+18.5% | Added |
| Public Employees Retirement System of Ohio | 75 | $4.40K | 0.00% | +75 | New |
| CX Institutional | 62 | $4.00K | 0.00% | 00.0% | Unchanged |
| Colonial Trust Co | 66 | $3.53K | 0.00% | −27−29.0% | Reduced |
| Golden State Wealth Management, LLC | 50 | $2.94K | 0.00% | +50 | New |
| Valued Wealth Advisors LLC | 48 | $2.82K | 0.00% | +48 | New |
| Cullen/Frost Bankers, Inc. | 48 | $2.82K | 0.00% | 00.0% | Unchanged |
| Farmers & Merchants Investments Inc | 33 | $1.94K | 0.00% | 00.0% | Unchanged |
| JPL Wealth Management, LLC | 32 | $1.88K | 0.00% | +32 | New |
| JFS Wealth Advisors, LLC | 23 | $1.35K | 0.00% | +23 | New |
| Stone House Investment Management, LLC | 23 | $1.35K | 0.00% | +23 | New |
| Essential Partners LLC | 22 | $1.29K | 0.00% | +1+4.8% | Added |
| C M Bidwell & Associates Ltd | 21 | $1.23K | 0.00% | 00.0% | Unchanged |
| CVA Family Office, LLC | 18 | $1.06K | 0.00% | +18 | New |
| Decker Retirement Planning Inc. | 16 | $939 | 0.00% | +16 | New |
| Quarry LP | 11 | $646 | 0.00% | −1,140−99.0% | Reduced |
| Basecamp Wealth Advisors LLC | 10 | $587 | 0.00% | −93−90.3% | Reduced |
| Cedar Mountain Advisors, LLC | 10 | $587 | 0.00% | 00.0% | Unchanged |
| Gilpin Wealth Management, LLC | 9 | $529 | 0.00% | +5+125.0% | Added |
| Godfrey Financial Associates, Inc. | 8 | $470 | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 7 | $411 | 0.00% | 00.0% | Unchanged |
| Vermillion Wealth Management, Inc. | 7 | $411 | 0.00% | +7 | New |
| SJS Investment Consulting Inc. | 7 | $411 | 0.00% | +7 | New |
| TD Capital Management LLC | 6 | $352 | 0.00% | 00.0% | Unchanged |
| Ankerstar Wealth, LLC | 6 | $352 | 0.00% | 00.0% | Unchanged |
| Aster Capital Management (DIFC) Ltd | 16 | $297 | 0.00% | +16 | New |
| HFM Investment Advisors, LLC | 4 | $235 | 0.00% | +4 | New |
| GHP Investment Advisors, Inc. | 2 | $118 | 0.00% | +2 | New |
| Tradewinds Capital Management, LLC | 2 | $118 | 0.00% | +2 | New |
| Abound Wealth Management | 2 | $118 | 0.00% | +2 | New |
| Rialto Wealth Management, LLC | 2 | $118 | 0.00% | +2 | New |
| Dunhill Financial, LLC | 1 | $59 | 0.00% | 00.0% | Unchanged |
| Curio Wealth, LLC | 1 | $59 | 0.00% | +1 | New |
| 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 |