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 |
|---|---|---|---|---|---|
| Prudential Financial Inc | 73,078 | $4.29M | 0.01% | +22,805+45.4% | Added |
| Segall Bryant & Hamill, LLC | 72,085 | $4.23M | 0.06% | −27,443−27.6% | Reduced |
| Russell Investments Group, Ltd. | 69,449 | $4.08M | 0.00% | −78,343−53.0% | Reduced |
| Orion Resource Partners LP | 68,837 | $4.04M | 1.85% | +68,837 | New |
| First Trust Advisors LP | 65,666 | $3.85M | 0.00% | −31,753−32.6% | Reduced |
| Voleon Capital Management LP | 64,884 | $3.81M | 0.08% | −32,906−33.6% | Reduced |
| California State Teachers Retirement System | 63,944 | $3.75M | 0.00% | +12,719+24.8% | Added |
| Victory Capital Management Inc | 63,829 | $3.75M | 0.00% | −43,161−40.3% | Reduced |
| Riggs Asset Managment Co. Inc. | 63,292 | $3.71M | 0.76% | +63,292 | New |
| Price T Rowe Associates Inc | 62,500 | $3.67M | 0.00% | +10,775+20.8% | Added |
| Axiom Investors LLC | 58,610 | $3.44M | 0.04% | +58,610 | New |
| Aldebaran Capital, LLC | 57,570 | $3.38M | 2.58% | −130−0.2% | Reduced |
| Aquatic Capital Management LLC | 57,380 | $3.37M | 0.10% | +57,380 | New |
| New York State Teachers Retirement System | 57,184 | $3.36M | 0.01% | −23,987−29.6% | Reduced |
| SummitTX Capital, L.P. | 57,074 | $3.35M | 0.11% | +57,074 | New |
| Wexford Capital LP | 55,900 | $3.28M | 0.54% | −188,749−77.2% | Reduced |
| Quadrature Capital Ltd | 54,645 | $3.21M | 0.04% | +32,564+147.5% | Added |
| Federated Hermes, Inc. | 54,196 | $3.18M | 0.01% | +3,764+7.5% | Added |
| SEI Investments Co | 54,162 | $3.18M | 0.00% | +1,310+2.5% | Added |
| Jump Financial, LLC | 51,676 | $3.03M | 0.04% | +51,676 | New |
| Vanguard Asset Management, Ltd | 51,572 | $3.03M | 0.00% | +51,572 | New |
| New York State Common Retirement Fund | 50,901 | $2.99M | 0.00% | +1,780+3.6% | Added |
| Hartree Partners, LP | 50,000 | $2.93M | 0.64% | −166,688−76.9% | Reduced |
| Ruffer LLP | 49,850 | $2.93M | 0.12% | +25,999+109.0% | Added |
| CAPROCK Group, Inc. | 49,141 | $2.88M | 0.07% | +49,141 | New |
| Headlands Technologies LLC | 48,903 | $2.87M | 0.33% | −28,529−36.8% | Reduced |
| Cinctive Capital Management LP | 48,165 | $2.83M | 0.19% | +48,165 | New |
| FORA Capital, LLC | 46,442 | $2.73M | 0.20% | +46,442 | New |
| LPL Financial LLC | 45,651 | $2.68M | 0.00% | −22,873−33.4% | Reduced |
| Marnell Management LLC | 45,298 | $2.66M | 1.77% | −61,758−57.7% | Reduced |
| Trexquant Investment LP | 44,268 | $2.60M | 0.02% | −62,448−58.5% | Reduced |
| Cetera Investment Advisers | 43,612 | $2.56M | 0.00% | +36,469+510.6% | Added |
| State of Wyoming | 43,532 | $2.55M | 0.30% | −13,397−23.5% | Reduced |
| State of New Jersey Common Pension Fund D | 42,837 | $2.51M | 0.01% | +42,837 | New |
| Intech Investment Management LLC | 41,657 | $2.44M | 0.02% | −7,692−15.6% | Reduced |
| SummerHaven Investment Management, LLC | 41,364 | $2.43M | 1.49% | −2,115−4.9% | Reduced |
| Legato Capital Management LLC | 40,954 | $2.40M | 0.22% | −190.0% | Reduced |
| Sagefield Capital LP | 39,566 | $2.32M | 0.17% | +39,566 | New |
| Prelude Capital Management, LLC | 39,486 | $2.32M | 0.18% | +16,308+70.4% | Added |
| Walleye Capital LLC | 38,959 | $2.29M | 0.01% | −69,792−64.2% | Reduced |
| Algert Global LLC | 38,039 | $2.23M | 0.03% | −11,554−23.3% | Reduced |
| Natixis Advisors, L.P. | 36,951 | $2.17M | 0.00% | +13,036+54.5% | Added |
| Thrivent Financial for Lutherans | 35,514 | $2.08M | 0.00% | −1,046−2.9% | Reduced |
| DRW Securities, LLC | 34,884 | $2.05M | 0.11% | +34,884 | New |
| Advisory Services Network, LLC | 33,265 | $1.95M | 0.03% | +33,265 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 32,055 | $1.88M | 0.00% | +5,785+22.0% | Added |
| Occudo Quantitative Strategies LP | 31,518 | $1.87M | 0.10% | +2,970+10.4% | Added |
| MetLife Investment Management | 31,026 | $1.82M | 0.01% | +1,511+5.1% | Added |
| PVG Asset Management Corp | 33,098 | $1.81M | 1.07% | +27,854+531.2% | Added |
| South Dakota Investment Council | 30,487 | $1.79M | 0.03% | −286,874−90.4% | Reduced |
| Brevan Howard Capital Management LP | 30,169 | $1.77M | 0.02% | +30,169 | New |
| State of Alaska, Department of Revenue | 29,763 | $1.75M | 0.02% | −841−2.7% | Reduced |
| Creative Planning | 29,230 | $1.72M | 0.00% | +9,157+45.6% | Added |
| Schonfeld Strategic Advisors LLC | 28,892 | $1.70M | 0.01% | −99,065−77.4% | Reduced |
| Canada Pension Plan Investment Board | 28,500 | $1.67M | 0.00% | +23,800+506.4% | Added |
| Manufacturers Life Insurance Company, The | 27,920 | $1.64M | 0.00% | +2,230+8.7% | Added |
| Royal Bank of Canada | 27,802 | $1.63M | 0.00% | −9,387−25.2% | Reduced |
| CoreCommodity Management, LLC | 27,031 | $1.59M | 0.29% | −42,353−61.0% | Reduced |
| Teachers Retirement System of the State of Kentucky | 26,898 | $1.58M | 0.01% | +13,633+102.8% | Added |
| Citigroup Inc | 26,272 | $1.54M | 0.00% | −111−0.4% | Reduced |
| Harvest Investment Services, LLC | 25,720 | $1.51M | 0.28% | +25,720 | New |
| Standard Life Aberdeen plc | 25,591 | $1.50M | 0.00% | −4,231−14.2% | Reduced |
| Vanguard Global Advisers, LLC | 24,720 | $1.45M | 0.00% | +24,720 | New |
| Illinois Municipal Retirement Fund | 24,204 | $1.42M | 0.02% | −4,322−15.2% | Reduced |
| Louisiana State Employees Retirement System | 23,600 | $1.39M | 0.02% | −800−3.3% | Reduced |
| Lighthouse Investment Partners, LLC | 23,416 | $1.37M | 0.05% | −11,584−33.1% | Reduced |
| Janus Henderson Group PLC | 22,906 | $1.35M | 0.00% | 00.0% | Unchanged |
| Riverwater Partners LLC | 22,650 | $1.33M | 0.44% | +22,650 | New |
| Sigma Planning Corp | 22,158 | $1.30M | 0.04% | −9,712−30.5% | Reduced |
| State of Tennessee, Treasury Department | 21,072 | $1.24M | 0.00% | +2,300+12.3% | Added |
| MML Investors Services, LLC | 20,728 | $1.22M | 0.00% | −2,439−10.5% | Reduced |
| Truist Financial Corp | 20,687 | $1.21M | 0.00% | +12,743+160.4% | Added |
| Scientech Research LLC | 20,487 | $1.20M | 1.00% | −4,193−17.0% | Reduced |
| XTX Topco Ltd | 20,166 | $1.18M | 0.02% | +11,069+121.7% | Added |
| Hodges Capital Management Inc. | 20,000 | $1.17M | 0.10% | 00.0% | Unchanged |
| Alphadyne Asset Management LP | 20,000 | $1.17M | 0.15% | +20,000 | New |
| Winton Group Ltd | 19,600 | $1.15M | 0.04% | −23,014−54.0% | Reduced |
| Fieldview Capital Management, LLC | 19,000 | $1.12M | 0.33% | +19,000 | New |
| State Board of Administration of Florida Retirement System | 18,408 | $1.08M | 0.00% | 00.0% | Unchanged |
| Concurrent Investment Advisors, LLC | 17,929 | $1.05M | 0.01% | −5,006−21.8% | Reduced |
| OP Asset Management Ltd | 17,683 | $1.04M | 0.01% | +17,683 | New |
| Integrated Wealth Concepts LLC | 15,962 | $936.8K | 0.01% | +15,962 | New |
| Arizona State Retirement System | 15,382 | $902.8K | 0.01% | −281−1.8% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 15,344 | $900.5K | 0.01% | +878+6.1% | Added |
| Amalgamated Bank | 15,307 | $898.0K | 0.01% | −140−0.9% | Reduced |
| Himension Fund | 15,276 | $896.5K | 0.07% | −9,974−39.5% | Reduced |
| Voya Investment Management LLC | 15,176 | $890.7K | 0.00% | +5,724+60.6% | Added |
| Virtu Financial LLC | 14,998 | $880.0K | 0.04% | −13,616−47.6% | Reduced |
| HSBC Holdings PLC | 14,499 | $860.1K | 0.00% | +2,767+23.6% | Added |
| ExodusPoint Capital Management, LP | 14,604 | $857.1K | 0.01% | −140,483−90.6% | Reduced |
| Sheets Smith Wealth Management | 14,594 | $856.5K | 0.10% | −63−0.4% | Reduced |
| Entropy Technologies, LP | 14,589 | $856.2K | 0.04% | −12,364−45.9% | Reduced |
| Northwest & Ethical Investments L.P. | 13,175 | $850.8K | 0.02% | +13,175 | New |
| Quantbot Technologies LP | 14,383 | $844.1K | 0.03% | −98,583−87.3% | Reduced |
| Los Angeles Capital Management LLC | 14,367 | $843.2K | 0.00% | +14,026+4,113.2% | Added |
| Callan Family Office, LLC | 14,304 | $839.5K | 0.02% | −415−2.8% | Reduced |
| Fifth Third Bancorp | 14,248 | $836.2K | 0.00% | +14,036+6,620.8% | Added |
| Yousif Capital Management, LLC | 14,208 | $833.9K | 0.01% | −75−0.5% | Reduced |
| Virginia Retirement Systems Et Al | 14,000 | $821.7K | 0.01% | +800+6.1% | Added |
| Allstate Corp | 13,570 | $796.4K | 0.01% | +13,570 | New |