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 |
|---|---|---|---|---|---|
| Voya Investment Management LLC | 15,176 | $890.7K | 0.00% | +5,724+60.6% | Added |
| Himension Fund | 15,276 | $896.5K | 0.07% | −9,974−39.5% | Reduced |
| Amalgamated Bank | 15,307 | $898.0K | 0.01% | −140−0.9% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 15,344 | $900.5K | 0.01% | +878+6.1% | Added |
| Arizona State Retirement System | 15,382 | $902.8K | 0.01% | −281−1.8% | Reduced |
| Integrated Wealth Concepts LLC | 15,962 | $936.8K | 0.01% | +15,962 | New |
| OP Asset Management Ltd | 17,683 | $1.04M | 0.01% | +17,683 | New |
| Concurrent Investment Advisors, LLC | 17,929 | $1.05M | 0.01% | −5,006−21.8% | Reduced |
| State Board of Administration of Florida Retirement System | 18,408 | $1.08M | 0.00% | 00.0% | Unchanged |
| Fieldview Capital Management, LLC | 19,000 | $1.12M | 0.33% | +19,000 | New |
| Winton Group Ltd | 19,600 | $1.15M | 0.04% | −23,014−54.0% | Reduced |
| 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 |
| XTX Topco Ltd | 20,166 | $1.18M | 0.02% | +11,069+121.7% | Added |
| Scientech Research LLC | 20,487 | $1.20M | 1.00% | −4,193−17.0% | Reduced |
| Truist Financial Corp | 20,687 | $1.21M | 0.00% | +12,743+160.4% | Added |
| MML Investors Services, LLC | 20,728 | $1.22M | 0.00% | −2,439−10.5% | Reduced |
| State of Tennessee, Treasury Department | 21,072 | $1.24M | 0.00% | +2,300+12.3% | Added |
| Sigma Planning Corp | 22,158 | $1.30M | 0.04% | −9,712−30.5% | Reduced |
| Riverwater Partners LLC | 22,650 | $1.33M | 0.44% | +22,650 | New |
| Janus Henderson Group PLC | 22,906 | $1.35M | 0.00% | 00.0% | Unchanged |
| Lighthouse Investment Partners, LLC | 23,416 | $1.37M | 0.05% | −11,584−33.1% | Reduced |
| Louisiana State Employees Retirement System | 23,600 | $1.39M | 0.02% | −800−3.3% | Reduced |
| Illinois Municipal Retirement Fund | 24,204 | $1.42M | 0.02% | −4,322−15.2% | Reduced |
| Vanguard Global Advisers, LLC | 24,720 | $1.45M | 0.00% | +24,720 | New |
| Standard Life Aberdeen plc | 25,591 | $1.50M | 0.00% | −4,231−14.2% | Reduced |
| Harvest Investment Services, LLC | 25,720 | $1.51M | 0.28% | +25,720 | New |
| Citigroup Inc | 26,272 | $1.54M | 0.00% | −111−0.4% | Reduced |
| Teachers Retirement System of the State of Kentucky | 26,898 | $1.58M | 0.01% | +13,633+102.8% | Added |
| CoreCommodity Management, LLC | 27,031 | $1.59M | 0.29% | −42,353−61.0% | Reduced |
| Royal Bank of Canada | 27,802 | $1.63M | 0.00% | −9,387−25.2% | Reduced |
| Manufacturers Life Insurance Company, The | 27,920 | $1.64M | 0.00% | +2,230+8.7% | Added |
| Canada Pension Plan Investment Board | 28,500 | $1.67M | 0.00% | +23,800+506.4% | Added |
| Schonfeld Strategic Advisors LLC | 28,892 | $1.70M | 0.01% | −99,065−77.4% | Reduced |
| Creative Planning | 29,230 | $1.72M | 0.00% | +9,157+45.6% | Added |
| State of Alaska, Department of Revenue | 29,763 | $1.75M | 0.02% | −841−2.7% | Reduced |
| Brevan Howard Capital Management LP | 30,169 | $1.77M | 0.02% | +30,169 | New |
| South Dakota Investment Council | 30,487 | $1.79M | 0.03% | −286,874−90.4% | Reduced |
| PVG Asset Management Corp | 33,098 | $1.81M | 1.07% | +27,854+531.2% | Added |
| MetLife Investment Management | 31,026 | $1.82M | 0.01% | +1,511+5.1% | Added |
| Occudo Quantitative Strategies LP | 31,518 | $1.87M | 0.10% | +2,970+10.4% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 32,055 | $1.88M | 0.00% | +5,785+22.0% | Added |
| Advisory Services Network, LLC | 33,265 | $1.95M | 0.03% | +33,265 | New |
| DRW Securities, LLC | 34,884 | $2.05M | 0.11% | +34,884 | New |
| Thrivent Financial for Lutherans | 35,514 | $2.08M | 0.00% | −1,046−2.9% | Reduced |
| Natixis Advisors, L.P. | 36,951 | $2.17M | 0.00% | +13,036+54.5% | Added |
| Algert Global LLC | 38,039 | $2.23M | 0.03% | −11,554−23.3% | Reduced |
| Walleye Capital LLC | 38,959 | $2.29M | 0.01% | −69,792−64.2% | Reduced |
| Prelude Capital Management, LLC | 39,486 | $2.32M | 0.18% | +16,308+70.4% | Added |
| Sagefield Capital LP | 39,566 | $2.32M | 0.17% | +39,566 | New |
| Legato Capital Management LLC | 40,954 | $2.40M | 0.22% | −190.0% | Reduced |
| SummerHaven Investment Management, LLC | 41,364 | $2.43M | 1.49% | −2,115−4.9% | Reduced |
| Intech Investment Management LLC | 41,657 | $2.44M | 0.02% | −7,692−15.6% | Reduced |
| State of New Jersey Common Pension Fund D | 42,837 | $2.51M | 0.01% | +42,837 | New |
| State of Wyoming | 43,532 | $2.55M | 0.30% | −13,397−23.5% | Reduced |
| Cetera Investment Advisers | 43,612 | $2.56M | 0.00% | +36,469+510.6% | Added |
| Trexquant Investment LP | 44,268 | $2.60M | 0.02% | −62,448−58.5% | Reduced |
| Marnell Management LLC | 45,298 | $2.66M | 1.77% | −61,758−57.7% | Reduced |
| LPL Financial LLC | 45,651 | $2.68M | 0.00% | −22,873−33.4% | Reduced |
| FORA Capital, LLC | 46,442 | $2.73M | 0.20% | +46,442 | New |
| Cinctive Capital Management LP | 48,165 | $2.83M | 0.19% | +48,165 | New |
| Headlands Technologies LLC | 48,903 | $2.87M | 0.33% | −28,529−36.8% | Reduced |
| CAPROCK Group, Inc. | 49,141 | $2.88M | 0.07% | +49,141 | New |
| Ruffer LLP | 49,850 | $2.93M | 0.12% | +25,999+109.0% | Added |
| Hartree Partners, LP | 50,000 | $2.93M | 0.64% | −166,688−76.9% | Reduced |
| New York State Common Retirement Fund | 50,901 | $2.99M | 0.00% | +1,780+3.6% | Added |
| Vanguard Asset Management, Ltd | 51,572 | $3.03M | 0.00% | +51,572 | New |
| Jump Financial, LLC | 51,676 | $3.03M | 0.04% | +51,676 | New |
| SEI Investments Co | 54,162 | $3.18M | 0.00% | +1,310+2.5% | Added |
| Federated Hermes, Inc. | 54,196 | $3.18M | 0.01% | +3,764+7.5% | Added |
| Quadrature Capital Ltd | 54,645 | $3.21M | 0.04% | +32,564+147.5% | Added |
| Wexford Capital LP | 55,900 | $3.28M | 0.54% | −188,749−77.2% | Reduced |
| SummitTX Capital, L.P. | 57,074 | $3.35M | 0.11% | +57,074 | New |
| New York State Teachers Retirement System | 57,184 | $3.36M | 0.01% | −23,987−29.6% | Reduced |
| Aquatic Capital Management LLC | 57,380 | $3.37M | 0.10% | +57,380 | New |
| Aldebaran Capital, LLC | 57,570 | $3.38M | 2.58% | −130−0.2% | Reduced |
| Axiom Investors LLC | 58,610 | $3.44M | 0.04% | +58,610 | New |
| Price T Rowe Associates Inc | 62,500 | $3.67M | 0.00% | +10,775+20.8% | Added |
| Riggs Asset Managment Co. Inc. | 63,292 | $3.71M | 0.76% | +63,292 | New |
| Victory Capital Management Inc | 63,829 | $3.75M | 0.00% | −43,161−40.3% | Reduced |
| California State Teachers Retirement System | 63,944 | $3.75M | 0.00% | +12,719+24.8% | Added |
| Voleon Capital Management LP | 64,884 | $3.81M | 0.08% | −32,906−33.6% | Reduced |
| First Trust Advisors LP | 65,666 | $3.85M | 0.00% | −31,753−32.6% | Reduced |
| Orion Resource Partners LP | 68,837 | $4.04M | 1.85% | +68,837 | New |
| Russell Investments Group, Ltd. | 69,449 | $4.08M | 0.00% | −78,343−53.0% | Reduced |
| Segall Bryant & Hamill, LLC | 72,085 | $4.23M | 0.06% | −27,443−27.6% | Reduced |
| Prudential Financial Inc | 73,078 | $4.29M | 0.01% | +22,805+45.4% | Added |
| Neuberger Berman Group LLC | 73,151 | $4.29M | 0.00% | +60,345+471.2% | Added |
| Susquehanna International Group, LLP | 78,472 | $4.61M | 0.01% | −132,011−62.7% | Reduced |
| GeoSphere Capital Management, LLC | 82,000 | $4.81M | 2.90% | +82,000 | New |
| Moore Capital Management, LP | 82,752 | $4.86M | 0.18% | +82,752 | New |
| Envestnet Asset Management Inc | 82,822 | $4.86M | 0.00% | +7,697+10.2% | Added |
| Boothbay Fund Management, LLC | 82,945 | $4.87M | 0.11% | −64,850−43.9% | Reduced |
| EAM Investors, LLC | 85,714 | $5.03M | 0.58% | −8,913−9.4% | Reduced |
| Caxton Associates LLP | 88,690 | $5.21M | 0.12% | −12,759−12.6% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 90,400 | $5.31M | 0.10% | −50,800−36.0% | Reduced |
| Portolan Capital Management, LLC | 95,039 | $5.58M | 0.30% | +95,039 | New |
| Balyasny Asset Management LLC | 95,068 | $5.58M | 0.01% | +95,068 | New |
| UBS Asset Management Americas Inc | 96,317 | $5.65M | 0.00% | −650,770−87.1% | Reduced |
| State of Wisconsin Investment Board | 100,242 | $5.88M | 0.01% | −73,697−42.4% | Reduced |