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 |
|---|---|---|---|---|---|
| Brinker Capital Investments, LLC | 3,593 | $210.9K | 0.00% | +3,593 | New |
| Wiley Bros.-Aintree Capital, LLC | 3,608 | $211.8K | 0.00% | +3,608 | New |
| Madrona Financial Services, LLC | 3,680 | $216.0K | 0.05% | −3,570−49.2% | Reduced |
| Leavell Investment Management, Inc. | 3,765 | $221.0K | 0.01% | +3,765 | New |
| CI Private Wealth, LLC | 3,775 | $221.6K | 0.00% | +3,775 | New |
| Cambridge Investment Research Advisors, Inc. | 3,909 | $229.0K | 0.00% | −10,296−72.5% | Reduced |
| Keebeck Alpha, LP | 3,915 | $229.8K | 0.70% | +3,915 | New |
| CIBC Asset Management Inc | 4,040 | $237.1K | 0.00% | +4,040 | New |
| Moran Wealth Management, LLC | 4,248 | $249.3K | 0.01% | +4,248 | New |
| GAMMA Investing LLC | 4,373 | $256.7K | 0.01% | −22−0.5% | Reduced |
| Vise Technologies, Inc. | 6,616 | $259.2K | 0.01% | 00.0% | Unchanged |
| Crossmark Global Holdings, Inc. | 4,471 | $262.4K | 0.00% | +4,471 | New |
| GWM Advisors LLC | 4,513 | $264.9K | 0.00% | +4,283+1,862.2% | Added |
| Compagnie Lombard Odier SCmA | 4,540 | $266.5K | 0.00% | +4,540 | New |
| Marex Group plc | 4,600 | $270.0K | 0.00% | +4,600 | New |
| Ameritas Investment Partners, Inc. | 4,656 | $273.3K | 0.01% | +242+5.5% | Added |
| Guggenheim Capital LLC | 4,834 | $283.7K | 0.00% | +4,834 | New |
| Twinbeech Capital LP | 4,908 | $288.1K | 0.03% | +4,908 | New |
| Aigen Investment Management, LP | 5,014 | $294.3K | 0.08% | +5,014 | New |
| Oxford Asset Management LLP | 5,079 | $298.1K | 0.12% | −4,536−47.2% | Reduced |
| Belpointe Asset Management LLC | 5,080 | $298.1K | 0.01% | +5,080 | New |
| The PNC Financial Services Group, Inc. | 5,090 | $298.7K | 0.00% | −284−5.3% | Reduced |
| Kraft, Davis & Associates, LLC | 5,058 | $302.3K | 0.06% | +58+1.2% | Added |
| Xponance, Inc. | 5,262 | $308.8K | 0.00% | +5,262 | New |
| RSM US Wealth Management LLC | 5,386 | $316.1K | 0.00% | +178+3.4% | Added |
| Baird Financial Group, Inc. | 5,473 | $321.2K | 0.00% | −235,137−97.7% | Reduced |
| Sequoia Financial Advisors, LLC | 5,750 | $337.5K | 0.00% | +5,750 | New |
| AE Wealth Management LLC | 5,812 | $341.1K | 0.00% | +451+8.4% | Added |
| Skopos Labs, Inc. | 5,961 | $349.9K | 0.01% | +5,961 | New |
| Everhart Financial Group, Inc. | 5,970 | $350.4K | 0.03% | +43+0.7% | Added |
| Mutual of America Capital Management LLC | 6,089 | $357.4K | 0.00% | +8+0.1% | Added |
| Anb Bank | 6,106 | $358.4K | 0.14% | −97−1.6% | Reduced |
| EP Wealth Advisors, LLC | 6,148 | $360.8K | 0.00% | +362+6.3% | Added |
| Systematic Alpha Investments, LLC | 6,200 | $363.9K | 0.01% | 00.0% | Unchanged |
| Journey Strategic Wealth LLC | 6,347 | $372.5K | 0.01% | +72+1.1% | Added |
| Highland Capital Management, LLC | 6,382 | $374.6K | 0.02% | +6,382 | New |
| Tower Research Capital LLC (TRC) | 6,721 | $394.5K | 0.01% | +3,208+91.3% | Added |
| Savant Capital, LLC | 6,802 | $399.2K | 0.00% | +523+8.3% | Added |
| Empowered Funds, LLC | 6,880 | $403.8K | 0.00% | +6,880 | New |
| Numerai GP LLC | 7,100 | $416.7K | 0.04% | −4,233−37.4% | Reduced |
| Swiss Life Asset Management Ltd | 7,161 | $420.3K | 0.00% | +7,161 | New |
| Renaissance Group LLC | 7,415 | $435.2K | 0.02% | +7,415 | New |
| Magnetar Financial LLC | 7,437 | $436.5K | 0.00% | +7,437 | New |
| Hudson Bay Capital Management LP | 7,471 | $438.5K | 0.00% | +7,471 | New |
| HighTower Advisors, LLC | 7,593 | $445.6K | 0.00% | +7,593 | New |
| Stifel Financial Corp | 7,647 | $448.8K | 0.00% | −897−10.5% | Reduced |
| Landscape Capital Management, L.L.C. | 7,707 | $452.3K | 0.03% | +7,707 | New |
| Maryland State Retirement & Pension System | 7,757 | $455.3K | 0.01% | 00.0% | Unchanged |
| Summit Global Investments | 7,866 | $462.0K | 0.03% | +241+3.2% | Added |
| Acadian Asset Management LLC | 7,947 | $464.0K | 0.00% | +7,947 | New |
| Caitong International Asset Management Co., Ltd | 8,005 | $469.8K | 0.09% | +8,005 | New |
| Independent Financial Group, LLC | 8,350 | $490.1K | 0.01% | +8,350 | New |
| ProShare Advisors LLC | 8,812 | $517.2K | 0.00% | −1,457−14.2% | Reduced |
| Advisor Group Holdings, Inc. | 9,020 | $529.4K | 0.00% | −7,255−44.6% | Reduced |
| Optimist Retirement Group LLC | 9,037 | $530.4K | 0.23% | +9,037 | New |
| Aristeia Capital LLC | 9,339 | $548.1K | 0.01% | −7,183−43.5% | Reduced |
| Rossby Financial, LCC | 8,700 | $552.5K | 0.12% | −350−3.9% | Reduced |
| Pictet Asset Management Holding SA | 9,587 | $562.7K | 0.00% | +73+0.8% | Added |
| Schroder Investment Management Group | 10,584 | $563.6K | 0.00% | +978+10.2% | Added |
| Toroso Investments, LLC | 9,828 | $576.8K | 0.00% | +9,828 | New |
| Cerity Partners LLC | 9,943 | $583.5K | 0.00% | +9,943 | New |
| Polymer Capital Management (US) LLC | 10,000 | $586.9K | 0.09% | −20,000−66.7% | Reduced |
| FCG Investment Co | 10,409 | $610.9K | 0.27% | +10,409 | New |
| Public Employees Retirement Association of Colorado | 10,465 | $614.0K | 0.00% | +10,465 | New |
| Axq Capital, LP | 10,627 | $623.7K | 0.08% | +10,627 | New |
| Gsa Capital Partners LLP | 10,650 | $625.0K | 0.04% | −35,959−77.2% | Reduced |
| Mercer Global Advisors Inc | 10,688 | $627.3K | 0.00% | +1,548+16.9% | Added |
| Park Avenue Securities LLC | 10,999 | $646.0K | 0.01% | −584−5.0% | Reduced |
| Commonwealth Equity Services, LLC | 11,073 | $649.9K | 0.00% | +1,213+12.3% | Added |
| Counterpoint Mutual Funds LLC | 11,586 | $680.0K | 0.10% | +11,586 | New |
| Marshall Wace, LLP | 11,754 | $689.8K | 0.00% | +4,842+70.1% | Added |
| Pathstone Holdings, LLC | 11,840 | $694.9K | 0.00% | +642+5.7% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 12,029 | $706.0K | 0.00% | +10,487+680.1% | Added |
| Oregon Public Employees Retirement Fund | 12,163 | $713.8K | 0.01% | −39−0.3% | Reduced |
| Chesapeake Asset Management LLC | 12,260 | $719.5K | 0.58% | −755−5.8% | Reduced |
| KLP Kapitalforvaltning AS | 12,400 | $727.8K | 0.00% | +400+3.3% | Added |
| Jones Financial Companies LLLP | 14,677 | $728.7K | 0.00% | +14,443+6,172.2% | Added |
| Massachusetts Financial Services Co | 12,497 | $733.4K | 0.00% | +12,497 | New |
| Oceanic Investment Management LTD | 12,553 | $736.7K | 0.63% | −13,435−51.7% | Reduced |
| IMC-Chicago, LLC | 12,680 | $744.2K | 0.01% | −25,110−66.4% | Reduced |
| Perennial Advisors, LLC | 12,868 | $755.2K | 0.13% | −6,500−33.6% | Reduced |
| Quantinno Capital Management LP | 12,996 | $762.7K | 0.00% | +2,601+25.0% | Added |
| Lido Advisors, LLC | 13,091 | $768.3K | 0.00% | +180+1.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 13,157 | $772.2K | 0.00% | −15−0.1% | Reduced |
| JustInvest LLC | 13,273 | $779.0K | 0.01% | +2,712+25.7% | Added |
| Vanguard Investments Australia, Ltd. | 13,368 | $784.6K | 0.00% | +13,368 | New |
| SG Americas Securities, LLC | 13,528 | $794.0K | 0.00% | −7,204−34.7% | Reduced |
| Allstate Corp | 13,570 | $796.4K | 0.01% | +13,570 | New |
| Virginia Retirement Systems Et Al | 14,000 | $821.7K | 0.01% | +800+6.1% | Added |
| Yousif Capital Management, LLC | 14,208 | $833.9K | 0.01% | −75−0.5% | Reduced |
| Fifth Third Bancorp | 14,248 | $836.2K | 0.00% | +14,036+6,620.8% | Added |
| Callan Family Office, LLC | 14,304 | $839.5K | 0.02% | −415−2.8% | Reduced |
| Los Angeles Capital Management LLC | 14,367 | $843.2K | 0.00% | +14,026+4,113.2% | Added |
| Quantbot Technologies LP | 14,383 | $844.1K | 0.03% | −98,583−87.3% | Reduced |
| Northwest & Ethical Investments L.P. | 13,175 | $850.8K | 0.02% | +13,175 | New |
| Entropy Technologies, LP | 14,589 | $856.2K | 0.04% | −12,364−45.9% | Reduced |
| Sheets Smith Wealth Management | 14,594 | $856.5K | 0.10% | −63−0.4% | Reduced |
| ExodusPoint Capital Management, LP | 14,604 | $857.1K | 0.01% | −140,483−90.6% | Reduced |
| HSBC Holdings PLC | 14,499 | $860.1K | 0.00% | +2,767+23.6% | Added |
| Virtu Financial LLC | 14,998 | $880.0K | 0.04% | −13,616−47.6% | Reduced |