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, Q2 2026
Institutional positions in Century Aluminum Co as of Jun 30, 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
- 416
- +33 vs. Q1 2026
- Shares held
- 104.1M
- +3.15M (+3.1%) vs. Q1 2026
- Total value
- $4.79B
- −$1.13B (−19.1%) vs. Q1 2026
- New holders
- 92
- 173 more added
- Sold out
- 59
- 111 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Century Aluminum Co; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| New York State Teachers Retirement System | 61,131 | $2.81M | 0.01% | +3,947+6.9% | Added |
| Thrivent Financial for Lutherans | 61,131 | $2.81M | 0.00% | +25,617+72.1% | Added |
| Vanguard Asset Management, Ltd | 62,243 | $2.86M | 0.00% | +10,671+20.7% | Added |
| Wexford Capital LP | 67,900 | $3.12M | 0.43% | +12,000+21.5% | Added |
| Segall Bryant & Hamill, LLC | 68,023 | $3.13M | 0.04% | −4,062−5.6% | Reduced |
| Himension Fund | 70,667 | $3.25M | 0.20% | +55,391+362.6% | Added |
| Marnell Management LLC | 71,516 | $3.29M | 1.67% | +26,218+57.9% | Added |
| LPL Financial LLC | 72,548 | $3.34M | 0.00% | +26,897+58.9% | Added |
| IMC-Chicago, LLC | 74,506 | $3.43M | 0.03% | +61,826+487.6% | Added |
| California State Teachers Retirement System | 76,827 | $3.53M | 0.00% | +12,883+20.1% | Added |
| Citigroup Inc | 77,032 | $3.54M | 0.00% | +50,760+193.2% | Added |
| Edgestream Partners, L.P. | 77,775 | $3.58M | 0.11% | −27,964−26.4% | Reduced |
| Lighthouse Investment Partners, LLC | 79,343 | $3.65M | 0.11% | +55,927+238.8% | Added |
| Jane Street Group, LLC | 81,564 | $3.75M | 0.00% | −1,239,378−93.8% | Reduced |
| Orion Resource Partners LP | 83,768 | $3.85M | 1.76% | +14,931+21.7% | Added |
| Price T Rowe Associates Inc | 85,846 | $3.95M | 0.00% | +23,346+37.4% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 87,917 | $4.05M | 0.00% | +75,888+630.9% | Added |
| Van Eck Associates Corp | 89,352 | $4.11M | 0.00% | +89,352 | New |
| Prudential Financial Inc | 91,083 | $4.19M | 0.00% | +18,005+24.6% | Added |
| Renaissance Technologies LLC | 94,299 | $4.34M | 0.01% | −45,200−32.4% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 96,141 | $4.42M | 0.09% | +5,741+6.4% | Added |
| Hudson Bay Capital Management LP | 100,000 | $4.60M | 0.02% | +92,529+1,238.5% | Added |
| UBS Asset Management Americas Inc | 100,220 | $4.61M | 0.00% | +3,903+4.1% | Added |
| Raymond James Financial Inc | 101,421 | $4.67M | 0.00% | −8,171−7.5% | Reduced |
| Bessemer Group Inc | 102,496 | $4.72M | 0.01% | 00.0% | Unchanged |
| Cinctive Capital Management LP | 107,201 | $4.93M | 0.20% | +59,036+122.6% | Added |
| State of Wisconsin Investment Board | 109,502 | $5.04M | 0.01% | +9,260+9.2% | Added |
| Envestnet Asset Management Inc | 115,267 | $5.30M | 0.00% | +32,445+39.2% | Added |
| Renaissance Group LLC | 118,147 | $5.44M | 0.22% | +110,732+1,493.4% | Added |
| Legal & General Group Plc | 123,069 | $5.66M | 0.00% | +10,506+9.3% | Added |
| Picton Mahoney Asset Management | 125,902 | $5.79M | 0.05% | −169,428−57.4% | Reduced |
| Cohen & Steers, Inc. | 126,118 | $5.80M | 0.01% | +7,935+6.7% | Added |
| CIBC World Markets Inc. | 132,202 | $6.08M | 0.01% | −28,430−17.7% | Reduced |
| Boothbay Fund Management, LLC | 133,461 | $6.14M | 0.12% | +50,516+60.9% | Added |
| Neuberger Berman Group LLC | 133,927 | $6.16M | 0.00% | +60,776+83.1% | Added |
| Swiss National Bank | 134,050 | $6.17M | 0.00% | +23,600+21.4% | Added |
| Insight Wealth Strategies, LLC | 143,472 | $6.17M | 0.60% | −2,552−1.7% | Reduced |
| Icon Advisers Inc | 140,500 | $6.46M | 1.22% | −32,700−18.9% | Reduced |
| Franklin Resources Inc | 144,112 | $6.63M | 0.00% | +19,296+15.5% | Added |
| CSM Advisors, LLC | 146,212 | $6.73M | 0.14% | −9,472−6.1% | Reduced |
| Ameriprise Financial Inc | 149,372 | $6.87M | 0.00% | +48,741+48.4% | Added |
| Rhumbline Advisers | 153,617 | $7.07M | 0.01% | −4,591−2.9% | Reduced |
| Russell Investments Group, Ltd. | 157,703 | $7.26M | 0.01% | +88,254+127.1% | Added |
| Drummond Knight Asset Management Pty Ltd | 162,274 | $7.47M | 1.37% | −118,818−42.3% | Reduced |
| Counterpoint Mutual Funds LLC | 166,967 | $7.68M | 0.76% | +155,381+1,341.1% | Added |
| Victory Capital Management Inc | 177,069 | $8.15M | 0.00% | +113,240+177.4% | Added |
| Alliancebernstein L.P. | 140,313 | $8.23M | 0.00% | −19,195−12.0% | Reduced |
| Susquehanna International Group, LLP | 179,384 | $8.25M | 0.01% | +100,912+128.6% | Added |
| CDC Financial, Inc. | 181,430 | $8.35M | 6.41% | −65,250−26.5% | Reduced |
| AQR Capital Management LLC | 188,232 | $8.66M | 0.00% | +21,999+13.2% | Added |
| Nicholas Investment Partners, LP | 197,999 | $9.11M | 0.51% | −94,403−32.3% | Reduced |
| First Trust Advisors LP | 201,727 | $9.28M | 0.01% | +136,061+207.2% | Added |
| Barclays PLC | 209,641 | $9.65M | 0.00% | +66,342+46.3% | Added |
| Wells Fargo & Company | 212,149 | $9.76M | 0.00% | +60,211+39.6% | Added |
| Public Sector Pension Investment Board | 222,998 | $10.3M | 0.03% | −20,899−8.6% | Reduced |
| Yaupon Capital Management LP | 223,861 | $10.3M | 0.34% | +12,660+6.0% | Added |
| Bank of Montreal | 228,556 | $10.5M | 0.00% | +820+0.4% | Added |
| Great West Life Assurance Co | 244,346 | $11.2M | 0.02% | −31,059−11.3% | Reduced |
| Systematic Financial Management LP | 252,249 | $11.6M | 0.23% | +94,527+59.9% | Added |
| Congress Asset Management Co | 255,636 | $11.8M | 0.07% | +2,201+0.9% | Added |
| Deutsche Bank AG | 263,726 | $12.1M | 0.00% | −334,299−55.9% | Reduced |
| BNP Paribas Arbitrage, SA | 269,169 | $12.4M | 0.01% | +155,917+137.7% | Added |
| Weiss Asset Management LP | 269,881 | $12.4M | 0.14% | +269,881 | New |
| Principal Financial Group Inc | 276,827 | $12.7M | 0.01% | +16,401+6.3% | Added |
| Citadel Advisors LLC | 290,031 | $13.3M | 0.01% | −1,030,836−78.0% | Reduced |
| Point72 Asset Management, L.P. | 294,555 | $13.6M | 0.02% | −274,896−48.3% | Reduced |
| Steamboat Capital Partners, LLC | 296,666 | $13.6M | 2.92% | +20,418+7.4% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 326,500 | $15.0M | 0.02% | +142,439+77.4% | Added |
| Nuveen, LLC | 341,970 | $15.7M | 0.00% | +32,993+10.7% | Added |
| JPMorgan Chase & Co | 347,166 | $16.3M | 0.00% | −169,457−32.8% | Reduced |
| Rokos Capital Management LLP | 355,002 | $16.3M | 0.21% | −81,686−18.7% | Reduced |
| First Eagle Investment Management, LLC | 362,360 | $16.7M | 0.03% | +199,273+122.2% | Added |
| Canada Pension Plan Investment Board | 365,400 | $16.8M | 0.01% | +336,900+1,182.1% | Added |
| Royce & Associates LP | 372,044 | $17.1M | 0.14% | +107,703+40.7% | Added |
| Capital World Investors | 391,417 | $18.0M | 0.00% | +391,417 | New |
| Voloridge Investment Management, LLC | 392,989 | $18.1M | 0.08% | −327,746−45.5% | Reduced |
| Bank of New York Mellon Corp | 403,628 | $18.6M | 0.00% | +67,764+20.2% | Added |
| Vanguard Fiduciary Trust Co | 427,306 | $19.7M | 0.00% | +49,011+13.0% | Added |
| Driehaus Capital Management LLC | 455,982 | $21.0M | 0.12% | +455,982 | New |
| Bridgewater Associates, LP | 473,928 | $21.8M | 0.09% | −258,589−35.3% | Reduced |
| Massachusetts Financial Services Co | 456,244 | $22.3M | 0.01% | +443,747+3,550.8% | Added |
| Jefferies Financial Group Inc. | 486,175 | $22.4M | 0.21% | +1,982+0.4% | Added |
| Mountaineer Partners Management, LLC | 503,309 | $23.2M | 16.84% | −80,688−13.8% | Reduced |
| BW Gestao de Investimentos Ltda. | 523,162 | $24.1M | 0.58% | +214,404+69.4% | Added |
| Wellington Management Group LLP | 548,898 | $25.3M | 0.00% | +170,451+45.0% | Added |
| Charles Schwab Investment Management Inc | 594,927 | $27.4M | 0.00% | +50,416+9.3% | Added |
| Bank of America Corp | 602,232 | $27.7M | 0.00% | −6,562−1.1% | Reduced |
| Woodline Partners LP | 626,772 | $28.8M | 0.09% | +626,772 | New |
| Squarepoint Ops LLC | 679,205 | $31.3M | 0.06% | +269,112+65.6% | Added |
| Northern Trust Corp | 682,075 | $31.4M | 0.00% | +133,331+24.3% | Added |
| Merewether Investment Management, LP | 693,537 | $31.9M | 0.60% | +178,737+34.7% | Added |
| Balyasny Asset Management LLC | 759,603 | $34.9M | 0.06% | +664,535+699.0% | Added |
| Allspring Global Investments Holdings, LLC | 827,031 | $35.6M | 0.05% | +265,001+47.2% | Added |
| Kinetic Partners Management, LP | 776,700 | $35.7M | 0.85% | +245,000+46.1% | Added |
| D. E. Shaw & Co., Inc. | 795,738 | $36.6M | 0.02% | −637,631−44.5% | Reduced |
| Qube Research & Technologies Ltd | 847,459 | $39.0M | 0.04% | +257,531+43.7% | Added |
| Boston Partners | 854,095 | $39.3M | 0.03% | +544,199+175.6% | Added |
| UBS Group AG | 866,821 | $39.9M | 0.01% | +280,055+47.7% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 870,850 | $40.1M | 0.05% | +70,719+8.8% | Added |
| Encompass Capital Advisors LLC | 900,000 | $41.4M | 1.79% | −651,362−42.0% | Reduced |