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 |
|---|---|---|---|---|---|
| SG Americas Securities, LLC | 13,528 | $794.0K | 0.00% | −7,204−34.7% | Reduced |
| Vanguard Investments Australia, Ltd. | 13,368 | $784.6K | 0.00% | +13,368 | New |
| JustInvest LLC | 13,273 | $779.0K | 0.01% | +2,712+25.7% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 13,157 | $772.2K | 0.00% | −15−0.1% | Reduced |
| Lido Advisors, LLC | 13,091 | $768.3K | 0.00% | +180+1.4% | Added |
| Quantinno Capital Management LP | 12,996 | $762.7K | 0.00% | +2,601+25.0% | Added |
| Perennial Advisors, LLC | 12,868 | $755.2K | 0.13% | −6,500−33.6% | Reduced |
| IMC-Chicago, LLC | 12,680 | $744.2K | 0.01% | −25,110−66.4% | Reduced |
| Oceanic Investment Management LTD | 12,553 | $736.7K | 0.63% | −13,435−51.7% | Reduced |
| Massachusetts Financial Services Co | 12,497 | $733.4K | 0.00% | +12,497 | New |
| Jones Financial Companies LLLP | 14,677 | $728.7K | 0.00% | +14,443+6,172.2% | Added |
| KLP Kapitalforvaltning AS | 12,400 | $727.8K | 0.00% | +400+3.3% | Added |
| Chesapeake Asset Management LLC | 12,260 | $719.5K | 0.58% | −755−5.8% | Reduced |
| Oregon Public Employees Retirement Fund | 12,163 | $713.8K | 0.01% | −39−0.3% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 12,029 | $706.0K | 0.00% | +10,487+680.1% | Added |
| Pathstone Holdings, LLC | 11,840 | $694.9K | 0.00% | +642+5.7% | Added |
| Marshall Wace, LLP | 11,754 | $689.8K | 0.00% | +4,842+70.1% | Added |
| Counterpoint Mutual Funds LLC | 11,586 | $680.0K | 0.10% | +11,586 | New |
| Commonwealth Equity Services, LLC | 11,073 | $649.9K | 0.00% | +1,213+12.3% | Added |
| Park Avenue Securities LLC | 10,999 | $646.0K | 0.01% | −584−5.0% | Reduced |
| Mercer Global Advisors Inc | 10,688 | $627.3K | 0.00% | +1,548+16.9% | Added |
| Gsa Capital Partners LLP | 10,650 | $625.0K | 0.04% | −35,959−77.2% | Reduced |
| Axq Capital, LP | 10,627 | $623.7K | 0.08% | +10,627 | New |
| Public Employees Retirement Association of Colorado | 10,465 | $614.0K | 0.00% | +10,465 | New |
| FCG Investment Co | 10,409 | $610.9K | 0.27% | +10,409 | New |
| Polymer Capital Management (US) LLC | 10,000 | $586.9K | 0.09% | −20,000−66.7% | Reduced |
| Cerity Partners LLC | 9,943 | $583.5K | 0.00% | +9,943 | New |
| Toroso Investments, LLC | 9,828 | $576.8K | 0.00% | +9,828 | New |
| Schroder Investment Management Group | 10,584 | $563.6K | 0.00% | +978+10.2% | Added |
| Pictet Asset Management Holding SA | 9,587 | $562.7K | 0.00% | +73+0.8% | Added |
| Rossby Financial, LCC | 8,700 | $552.5K | 0.12% | −350−3.9% | Reduced |
| Aristeia Capital LLC | 9,339 | $548.1K | 0.01% | −7,183−43.5% | Reduced |
| Optimist Retirement Group LLC | 9,037 | $530.4K | 0.23% | +9,037 | New |
| Advisor Group Holdings, Inc. | 9,020 | $529.4K | 0.00% | −7,255−44.6% | Reduced |
| ProShare Advisors LLC | 8,812 | $517.2K | 0.00% | −1,457−14.2% | Reduced |
| Independent Financial Group, LLC | 8,350 | $490.1K | 0.01% | +8,350 | New |
| Caitong International Asset Management Co., Ltd | 8,005 | $469.8K | 0.09% | +8,005 | New |
| Acadian Asset Management LLC | 7,947 | $464.0K | 0.00% | +7,947 | New |
| Summit Global Investments | 7,866 | $462.0K | 0.03% | +241+3.2% | Added |
| Maryland State Retirement & Pension System | 7,757 | $455.3K | 0.01% | 00.0% | Unchanged |
| Landscape Capital Management, L.L.C. | 7,707 | $452.3K | 0.03% | +7,707 | New |
| Stifel Financial Corp | 7,647 | $448.8K | 0.00% | −897−10.5% | Reduced |
| HighTower Advisors, LLC | 7,593 | $445.6K | 0.00% | +7,593 | New |
| Hudson Bay Capital Management LP | 7,471 | $438.5K | 0.00% | +7,471 | New |
| Magnetar Financial LLC | 7,437 | $436.5K | 0.00% | +7,437 | New |
| Renaissance Group LLC | 7,415 | $435.2K | 0.02% | +7,415 | New |
| Swiss Life Asset Management Ltd | 7,161 | $420.3K | 0.00% | +7,161 | New |
| Numerai GP LLC | 7,100 | $416.7K | 0.04% | −4,233−37.4% | Reduced |
| Empowered Funds, LLC | 6,880 | $403.8K | 0.00% | +6,880 | New |
| Savant Capital, LLC | 6,802 | $399.2K | 0.00% | +523+8.3% | Added |
| Tower Research Capital LLC (TRC) | 6,721 | $394.5K | 0.01% | +3,208+91.3% | Added |
| Highland Capital Management, LLC | 6,382 | $374.6K | 0.02% | +6,382 | New |
| Journey Strategic Wealth LLC | 6,347 | $372.5K | 0.01% | +72+1.1% | Added |
| Systematic Alpha Investments, LLC | 6,200 | $363.9K | 0.01% | 00.0% | Unchanged |
| EP Wealth Advisors, LLC | 6,148 | $360.8K | 0.00% | +362+6.3% | Added |
| Anb Bank | 6,106 | $358.4K | 0.14% | −97−1.6% | Reduced |
| Mutual of America Capital Management LLC | 6,089 | $357.4K | 0.00% | +8+0.1% | Added |
| Everhart Financial Group, Inc. | 5,970 | $350.4K | 0.03% | +43+0.7% | Added |
| Skopos Labs, Inc. | 5,961 | $349.9K | 0.01% | +5,961 | New |
| AE Wealth Management LLC | 5,812 | $341.1K | 0.00% | +451+8.4% | Added |
| Sequoia Financial Advisors, LLC | 5,750 | $337.5K | 0.00% | +5,750 | New |
| Baird Financial Group, Inc. | 5,473 | $321.2K | 0.00% | −235,137−97.7% | Reduced |
| RSM US Wealth Management LLC | 5,386 | $316.1K | 0.00% | +178+3.4% | Added |
| Xponance, Inc. | 5,262 | $308.8K | 0.00% | +5,262 | New |
| Kraft, Davis & Associates, LLC | 5,058 | $302.3K | 0.06% | +58+1.2% | Added |
| The PNC Financial Services Group, Inc. | 5,090 | $298.7K | 0.00% | −284−5.3% | Reduced |
| Belpointe Asset Management LLC | 5,080 | $298.1K | 0.01% | +5,080 | New |
| Oxford Asset Management LLP | 5,079 | $298.1K | 0.12% | −4,536−47.2% | Reduced |
| Aigen Investment Management, LP | 5,014 | $294.3K | 0.08% | +5,014 | New |
| Twinbeech Capital LP | 4,908 | $288.1K | 0.03% | +4,908 | New |
| Guggenheim Capital LLC | 4,834 | $283.7K | 0.00% | +4,834 | New |
| Ameritas Investment Partners, Inc. | 4,656 | $273.3K | 0.01% | +242+5.5% | Added |
| Marex Group plc | 4,600 | $270.0K | 0.00% | +4,600 | New |
| Compagnie Lombard Odier SCmA | 4,540 | $266.5K | 0.00% | +4,540 | New |
| GWM Advisors LLC | 4,513 | $264.9K | 0.00% | +4,283+1,862.2% | Added |
| Crossmark Global Holdings, Inc. | 4,471 | $262.4K | 0.00% | +4,471 | New |
| Vise Technologies, Inc. | 6,616 | $259.2K | 0.01% | 00.0% | Unchanged |
| GAMMA Investing LLC | 4,373 | $256.7K | 0.01% | −22−0.5% | Reduced |
| Moran Wealth Management, LLC | 4,248 | $249.3K | 0.01% | +4,248 | New |
| CIBC Asset Management Inc | 4,040 | $237.1K | 0.00% | +4,040 | New |
| Keebeck Alpha, LP | 3,915 | $229.8K | 0.70% | +3,915 | New |
| Cambridge Investment Research Advisors, Inc. | 3,909 | $229.0K | 0.00% | −10,296−72.5% | Reduced |
| CI Private Wealth, LLC | 3,775 | $221.6K | 0.00% | +3,775 | New |
| Leavell Investment Management, Inc. | 3,765 | $221.0K | 0.01% | +3,765 | New |
| Madrona Financial Services, LLC | 3,680 | $216.0K | 0.05% | −3,570−49.2% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 3,608 | $211.8K | 0.00% | +3,608 | New |
| Brinker Capital Investments, LLC | 3,593 | $210.9K | 0.00% | +3,593 | New |
| Everence Capital Management Inc | 3,551 | $208.0K | 0.01% | −4,199−54.2% | Reduced |
| O'Shaughnessy Asset Management, LLC | 3,477 | $204.1K | 0.00% | +3,477 | New |
| CWM, LLC | 2,525 | $148.2K | 0.00% | +906+56.0% | Added |
| Transamerica Financial Advisors, Inc. | 2,431 | $142.7K | 0.01% | +1,421+140.7% | Added |
| Meeder Asset Management Inc | 2,213 | $129.9K | 0.01% | −2,274−50.7% | Reduced |
| KBC Group NV | 2,199 | $129.0K | 0.00% | +2,199 | New |
| Vestcor Inc | 2,062 | $121.0K | 0.00% | +2,062 | New |
| Rockefeller Capital Management L.P. | 1,684 | $98.8K | 0.00% | +797+89.9% | Added |
| Signaturefd, LLC | 1,542 | $90.5K | 0.00% | +63+4.3% | Added |
| Erste Asset Management GmbH | 1,637 | $87.2K | 0.00% | 00.0% | Unchanged |
| Hantz Financial Services, Inc. | 1,455 | $85.0K | 0.00% | +237+19.5% | Added |
| New Age Alpha Advisors, LLC | 1,437 | $84.3K | 0.00% | −26−1.8% | Reduced |
| EverSource Wealth Advisors, LLC | 1,419 | $83.3K | 0.00% | +297+26.5% | Added |