DaveManuel.com · Institutional Ownership · Who Owns It
CENTURY ALUM CO (CENX)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
424
Reporting holders
$5.1B
Reported value
107.2%
Of shares outstanding
2.8%
Calls
0.9%
Puts
+28
Holder change
Institutions report 106,158,486 shares against 98,993,295 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Glencore plc | $1.4B | 29,690,702 | 28.07% | 7q | HELD |
| BlackRock, Inc. | $474.1M | 10,304,905 | 0.01% | 8q | +14.4%+$59.6M |
| STATE STREET CORP | $255.0M | 5,542,720 | 0.01% | 31q | +18.8%+$40.3M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $219.6M | 4,773,720 | 0.01% | 2q | +12.5%+$24.5M |
| Assenagon Asset Management S.A. | $140.9M | 3,062,334 | 0.09% | 22q | +67.3%+$56.7M |
| VANGUARD CAPITAL MANAGEMENT LLC | $136.8M | 2,972,532 | 0.00% | 2q | +14.9%+$17.8M |
| Invesco Ltd. | $111.2M | 2,417,794 | 0.01% | 31q | +16.4%+$15.7M |
| Sourcerock Group LLC | $104.3M | 2,266,085 | 5.42% | 8q | -15.7%-$19.4M |
| DIMENSIONAL FUND ADVISORS LP | $101.8M | 2,211,502 | 0.02% | 31q | +0.9%+$946.9K |
| UBS Group AG | $92.8M incl. $52.9M options CALL | 866,821 | 0.01% | 25q | +47.7%+$30.0M |
| FMR LLC | $90.2M | 1,960,353 | 0.00% | 19q | -26.3%-$32.2M |
| GEODE CAPITAL MANAGEMENT, LLC | $85.0M | 1,846,800 | 0.00% | 31q | +19.9%+$14.1M |
| Fisher Asset Management, LLC | $70.6M | 1,534,405 | 0.02% | 31q | +80.2%+$31.4M |
| MORGAN STANLEY | $69.5M | 1,510,756 | 0.00% | 35q | -4.7%-$3.4M |
| Impala Asset Management LLC | $54.5M incl. $6.9M options OPT | 1,185,000 | 30.91% | 11q | +21.5%+$9.7M |
| MILLENNIUM MANAGEMENT LLC | $51.8M incl. $487.7K options CALL | 1,116,217 | 0.02% | 23q | -43.8%-$40.5M |
| GOLDMAN SACHS GROUP INC | $48.3M | 1,049,276 | 0.00% | 31q | +176.7%+$30.8M |
| Encompass Capital Advisors LLC | $41.4M | 900,000 | 1.47% | 6q | -42.0%-$30.0M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $40.1M | 870,850 | 0.05% | 9q | +8.8%+$3.3M |
| Boston Partners | $39.3M | 854,095 | 0.03% | 6q | +175.6%+$25.0M |
| Qube Research & Technologies Ltd | $39.0M | 847,459 | 0.04% | 8q | +43.7%+$11.8M |
| D. E. Shaw & Co., Inc. | $37.0M incl. $418.7K options CALL | 795,738 | 0.02% | 28q | -44.5%-$29.7M |
| Kinetic Partners Management, LP | $35.7M | 776,700 | 0.85% | 2q | +46.1%+$11.3M |
| Allspring Global Investments Holdings, LLC | $35.6M | 827,031 | 0.05% | 4q | +47.2%+$11.4M |
| JANE STREET GROUP, LLC | $35.5M incl. $31.8M options CALL+PUT | 81,564 | 0.00% | 22q | -93.8%-$540.0M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $35.5M incl. $27.2M options CALL+PUT | 179,384 | 0.00% | 31q | +128.6%+$20.0M |
| Balyasny Asset Management L.P. | $34.9M | 759,603 | 0.04% | 3q | +699.0%+$30.6M |
| First Eagle Investment Management, LLC | $33.3M | 724,720 | 0.03% | 20q | +344.4%+$25.8M |
| Merewether Investment Management, LP | $31.9M | 693,537 | 0.60% | 2q | +34.7%+$8.2M |
| NORTHERN TRUST CORP | $31.4M | 682,075 | 0.00% | 31q | +24.3%+$6.1M |
| Squarepoint Ops LLC | $31.3M | 679,205 | 0.03% | 8q | +65.6%+$12.4M |
| CITADEL ADVISORS LLC | $30.0M incl. $16.7M options CALL+PUT | 290,031 | 0.00% | 31q | -78.0%-$106.7M |
| Woodline Partners LP | $28.8M | 626,772 | 0.09% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $27.7M | 602,232 | 0.00% | 31q | -1.1%-$301.9K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $27.4M | 594,927 | 0.00% | 31q | +9.3%+$2.3M |
| WELLINGTON MANAGEMENT GROUP LLP | $25.3M | 548,898 | 0.00% | 20q | +45.0%+$7.8M |
| BW Gestao de Investimentos Ltda. | $24.1M | 523,162 | 0.48% | 4q | +69.4%+$9.9M |
| Caption Management, LLC | $23.7M CALL+PUT | options only | 0.11% | 11q | OPTIONS |
| Mountaineer Partners Management, LLC | $23.2M | 503,309 | 16.84% | 15q | -13.8%-$3.7M |
| Jefferies Financial Group Inc. | $22.4M | 486,175 | 0.15% | 4q | HELD |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $22.3M | 456,244 | 0.01% | 2q | +3550.8%+$21.7M |
| Bridgewater Associates, LP | $21.8M | 473,928 | 0.09% | 3q | -35.3%-$11.9M |
| Driehaus Capital Management LLC | $21.0M | 455,982 | 0.12% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $19.7M | 427,306 | 0.00% | 2q | +13.0%+$2.3M |
| Bank of New York Mellon Corp | $18.6M | 403,628 | 0.00% | 31q | +20.2%+$3.1M |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $18.1M | 392,989 | 0.08% | 21q | -45.5%-$15.1M |
| Capital World Investors | $18.0M | 391,417 | 0.00% | new | NEW |
| IMC-Chicago, LLC | $17.7M incl. $14.3M options CALL+PUT | 74,506 | 0.00% | 11q | +487.6%+$14.7M |
| Point72 Asset Management, L.P. | $17.2M incl. $3.6M options CALL+PUT | 294,555 | 0.02% | 3q | -48.3%-$16.0M |
| ROYCE & ASSOCIATES LP | $17.1M | 372,044 | 0.14% | 4q | +40.7%+$5.0M |
| CANADA PENSION PLAN INVESTMENT BOARD | $16.8M | 365,400 | 0.01% | 3q | +1182.1%+$15.5M |
| Rokos Capital Management LLP | $16.3M | 355,002 | 0.06% | 2q | -18.7%-$3.8M |
| JPMORGAN CHASE & CO | $16.3M | 347,166 | 0.00% | 31q | -32.8%-$8.0M |
| Nuveen, LLC | $15.7M | 341,970 | 0.00% | 6q | +10.7%+$1.5M |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $15.0M | 326,500 | 0.02% | 3q | +77.4%+$6.6M |
| WELLS FARGO & COMPANY/MN | $14.0M incl. $4.2M options CALL | 212,149 | 0.00% | 31q | +39.6%+$4.0M |
| Steamboat Capital Partners, LLC | $13.6M | 296,666 | 2.92% | 11q | +7.4%+$939.4K |
| PRINCIPAL FINANCIAL GROUP INC | $12.7M | 276,827 | 0.01% | 31q | +6.3%+$754.6K |
| Weiss Asset Management LP | $12.4M | 269,881 | 0.13% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $12.4M | 269,169 | 0.00% | 31q | +137.7%+$7.2M |
| DEUTSCHE BANK AG\ | $12.1M | 263,726 | 0.00% | 34q | -55.9%-$15.4M |
| CONGRESS ASSET MANAGEMENT CO | $11.8M | 255,636 | 0.07% | 18q | +0.9%+$101.3K |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | $11.6M | 252,249 | 0.23% | 3q | +59.9%+$4.3M |
| CANADA LIFE ASSURANCE Co | $11.2M | 244,346 | 0.02% | 27q | -11.3%-$1.4M |
| BANK OF MONTREAL /CAN/ | $10.5M | 228,556 | 0.00% | 31q | HELD |
| Yaupon Capital Management LP | $10.3M | 223,861 | 0.20% | 2q | +6.0%+$582.5K |
| Public Sector Pension Investment Board | $10.3M | 222,998 | 0.03% | 31q | -8.6%-$961.6K |
| BARCLAYS PLC | $9.6M | 209,641 | 0.00% | 31q | +46.3%+$3.1M |
| FIRST TRUST ADVISORS LP | $9.3M | 201,727 | 0.01% | 3q | +207.2%+$6.3M |
| Nicholas Investment Partners, LP | $9.1M | 197,999 | 0.51% | 3q | -32.3%-$4.3M |
| AQR CAPITAL MANAGEMENT LLC | $8.7M | 188,232 | 0.00% | 10q | +13.2%+$1.0M |
| CDC Financial, Inc. | $8.3M | 181,430 | 3.50% | 3q | -26.5%-$3.0M |
| ALLIANCEBERNSTEIN L.P. | $8.2M | 140,313 | 0.00% | 31q | -12.0%-$1.1M |
| VICTORY CAPITAL MANAGEMENT INC | $8.1M | 177,069 | 0.00% | 6q | +177.4%+$5.2M |
| Counterpoint Mutual Funds LLC | $7.7M | 166,967 | 0.76% | 2q | +1341.1%+$7.1M |
| Drummond Knight Asset Management Pty Ltd | $7.5M | 162,274 | 1.37% | 3q | -42.3%-$5.5M |
| Russell Investments Group, Ltd. | $7.3M | 157,703 | 0.01% | 11q | +127.1%+$4.1M |
| RHUMBLINE ADVISERS | $7.1M | 153,617 | 0.01% | 31q | -2.9%-$211.2K |
| AMERIPRISE FINANCIAL INC | $6.9M | 149,372 | 0.00% | 31q | +48.4%+$2.2M |
| CSM Advisors, LLC | $6.7M | 146,212 | 0.14% | 5q | -6.1%-$435.8K |
| FRANKLIN RESOURCES INC | $6.6M | 144,112 | 0.00% | 13q | +15.5%+$887.8K |
| ICON ADVISERS INC/CO | $6.5M | 140,500 | 1.22% | 5q | -18.9%-$1.5M |
| Insight Wealth Strategies, LLC | $6.2M | 143,472 | 0.60% | 3q | -1.7%-$109.8K |
| Swiss National Bank | $6.2M | 134,050 | 0.00% | 31q | +21.4%+$1.1M |
| NEUBERGER BERMAN GROUP LLC | $6.2M | 133,927 | 0.00% | 6q | +83.1%+$2.8M |
| BOOTHBAY FUND MANAGEMENT, LLC | $6.1M | 133,461 | 0.08% | 8q | +60.9%+$2.3M |
| CIBC WORLD MARKET INC. | $6.1M | 132,202 | 0.01% | 2q | -17.7%-$1.3M |
| COHEN & STEERS, INC. | $5.8M | 126,118 | 0.01% | 7q | +6.7%+$365.1K |
| PICTON MAHONEY ASSET MANAGEMENT | $5.8M | 125,902 | 0.04% | 2q | -57.4%-$7.8M |
| Legal & General Group Plc | $5.7M | 123,069 | 0.00% | 31q | +9.3%+$483.4K |
| RENAISSANCE GROUP LLC | $5.4M | 118,147 | 0.22% | 2q | +1493.4%+$5.1M |
| ENVESTNET ASSET MANAGEMENT INC | $5.3M | 115,267 | 0.00% | 3q | +39.2%+$1.5M |
| STATE OF WISCONSIN INVESTMENT BOARD | $5.0M | 109,502 | 0.01% | 10q | +9.2%+$426.1K |
| Cinctive Capital Management LP | $4.9M | 107,201 | 0.18% | 2q | +122.6%+$2.7M |
| BESSEMER GROUP INC | $4.7M | 102,496 | 0.01% | 8q | HELD |
| RAYMOND JAMES FINANCIAL INC | $4.7M | 101,421 | 0.00% | 6q | -7.5%-$375.9K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $4.6M | 100,220 | 0.00% | 31q | +4.1%+$179.6K |
| Hudson Bay Capital Management LP | $4.6M | 100,000 | 0.01% | 2q | +1238.5%+$4.3M |
| Y-Intercept (Hong Kong) Ltd | $4.4M | 96,141 | 0.09% | 4q | +6.4%+$264.1K |
| RENAISSANCE TECHNOLOGIES LLC | $4.3M | 94,299 | 0.01% | 5q | -32.4%-$2.1M |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-05 | 13G/A | BlackRock, Inc. | 10.5% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 78 | $1.2B | 31,971,047 | 11 | 33 | 15 | 0.0% |
| Q2 2026 | 424 | $5.1B | 106,158,486 | 87 | 170 | 109 | 3.8% |
| Q1 2026 | 396 | $6.1B | 100,981,044 | 101 | 125 | 120 | 3.5% |
| Q4 2025 | 332 | $4.2B | 100,027,911 | 95 | 102 | 88 | 6.4% |
| Q3 2025 | 265 | $3.1B | 96,945,086 | 68 | 80 | 77 | 6.9% |
| Q2 2025 | 232 | $1.8B | 95,777,418 | 48 | 84 | 69 | 5.7% |
| Q1 2025 | 225 | $1.8B | 92,425,030 | 49 | 68 | 79 | 4.2% |
| Q4 2024 | 229 | $1.8B | 92,433,106 | 47 | 69 | 67 | 5.0% |
| Q3 2024 | 204 | $963.3M | 55,941,953 | 45 | 57 | 71 | 5.7% |
| Q2 2024 | 197 | $1.0B | 55,753,346 | 39 | 57 | 65 | 6.6% |
| Q1 2024 | 187 | $907.1M | 57,871,446 | 35 | 43 | 74 | 2.6% |
| Q4 2023 | 173 | $753.4M | 58,457,684 | 33 | 56 | 56 | 5.8% |
| Q3 2023 | 162 | $387.2M | 52,595,748 | 22 | 54 | 56 | 2.3% |
| Q2 2023 | 162 | $447.4M | 50,268,828 | 17 | 48 | 59 | 2.0% |
| Q1 2023 | 171 | $530.1M | 51,793,682 | 26 | 46 | 66 | 2.2% |
| Q4 2022 | 167 | $435.0M | 51,765,602 | 29 | 56 | 54 | 2.6% |
| Q3 2022 | 161 | $293.8M | 53,977,220 | 25 | 55 | 56 | 2.7% |
| Q2 2022 | 161 | $458.4M | 59,222,759 | 27 | 65 | 50 | 4.9% |
| Q1 2022 | 187 | $1.5B | 56,112,822 | 48 | 49 | 69 | 4.0% |
| Q4 2021 | 162 | $1.0B | 60,415,307 | 28 | 44 | 55 | 2.3% |
| Q3 2021 | 144 | $849.3M | 61,104,017 | 26 | 41 | 51 | 3.2% |
| Q2 2021 | 141 | $868.7M | 66,783,928 | 27 | 41 | 45 | 0.9% |
| Q1 2021 | 135 | $1.1B | 59,625,507 | 25 | 41 | 50 | 0.8% |
| Q4 2020 | 129 | $629.9M | 56,779,365 | 18 | 38 | 45 | 0.5% |
| Q3 2020 | 127 | $424.6M | 59,651,123 | 22 | 35 | 41 | 0.5% |
| Q2 2020 | 116 | $444.6M | 62,061,054 | 21 | 29 | 44 | 0.5% |
| Q1 2020 | 126 | $326.0M | 88,229,039 | 19 | 41 | 36 | 2.0% |
| Q4 2019 | 137 | $522.1M | 67,575,830 | 19 | 45 | 36 | 2.8% |
| Q3 2019 | 138 | $386.0M | 57,209,735 | 13 | 50 | 42 | 1.7% |
| Q2 2019 | 144 | $462.8M | 66,061,819 | 19 | 52 | 39 | 1.4% |
| Q1 2019 | 146 | $571.1M | 63,505,700 | 9 | 59 | 42 | 1.3% |
| Q4 2018 | 150 | $789.5M | 106,971,944 | 3 | 4 | 2 | 1.0% |