CENTURY ALUM CO (CENX)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
392
Reporting holders
$5.0B
Reported value
106.4%
Of shares outstanding
3.9%
Held as options
+30
Holder change
Institutions report 105,351,893 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.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
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 | 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 | 1,185,000 | 30.91% | 11q | +21.5%+$9.7M |
| MILLENNIUM MANAGEMENT LLC | $51.8M | 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 | 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 | 81,564 | 0.00% | 22q | -93.8%-$540.0M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $35.5M | 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 |
| 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 | 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 |
| Sixth Street Partners Management Company, L.P. | $27.4M | 594,927 | 0.00% | new | NEW |
| 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 | 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 |
| Public Sector Pension Investment Board | $20.5M | 445,996 | 0.03% | 31q | +82.9%+$9.3M |
| 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 | 74,506 | 0.00% | 11q | +487.6%+$14.7M |
| Point72 Asset Management, L.P. | $17.2M | 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 |
| First Eagle Investment Management, LLC | $16.7M | 362,360 | 0.03% | 20q | +122.2%+$9.2M |
| 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 | 212,149 | 0.00% | 31q | -30.2%-$6.0M |
| 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 |
| 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 |
| 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 | -25.8%-$2.4M |
| 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 |
| 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 |
| 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 |
| PRUDENTIAL FINANCIAL INC | $4.2M | 91,083 | 0.00% | 31q | +24.6%+$828.4K |
| GROUP ONE TRADING LLC | $4.2M | 133 | 0.01% | 28q | HELD |
| VAN ECK ASSOCIATES CORP | $4.1M | 89,352 | 0.00% | new | NEW |
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 |
|---|---|---|---|
| 2026-08-07 | 13G | STATE STREET CORPORATION | 5.6% |
| 2026-07-27 | 13G/A | BlackRock, Inc. | 9.5% |
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 |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 392 | $5.0B | 105,351,893 | 83 | 154 | 103 | 3.9% |
| Q1 2026 | 362 | $6.1B | 99,845,829 | 97 | 114 | 104 | 3.5% |
| Q4 2025 | 303 | $4.1B | 98,753,102 | 89 | 92 | 79 | 6.4% |
| Q3 2025 | 240 | $3.0B | 95,753,210 | 64 | 71 | 69 | 6.9% |
| Q2 2025 | 208 | $1.8B | 94,540,285 | 43 | 75 | 61 | 5.6% |
| Q1 2025 | 204 | $1.8B | 91,558,451 | 46 | 59 | 72 | 4.1% |
| Q4 2024 | 209 | $1.8B | 91,771,684 | 40 | 65 | 62 | 4.9% |
| Q3 2024 | 187 | $954.2M | 55,565,932 | 42 | 54 | 64 | 5.6% |
| Q2 2024 | 179 | $987.5M | 55,271,624 | 36 | 53 | 60 | 6.5% |
| Q1 2024 | 166 | $892.8M | 57,258,556 | 31 | 39 | 66 | 2.6% |
| Q4 2023 | 152 | $734.8M | 57,397,409 | 29 | 52 | 47 | 5.3% |
| Q3 2023 | 140 | $375.5M | 51,103,236 | 17 | 51 | 47 | 2.2% |
| Q2 2023 | 143 | $434.6M | 48,909,165 | 16 | 40 | 52 | 1.8% |
| Q1 2023 | 142 | $508.4M | 49,873,960 | 18 | 43 | 55 | 1.9% |
| Q4 2022 | 128 | $356.8M | 42,374,994 | 23 | 45 | 37 | 3.0% |
| Q3 2022 | 168 | $277.3M | 50,861,611 | 26 | 56 | 58 | 2.8% |
| Q2 2022 | 167 | $438.2M | 56,474,911 | 27 | 67 | 53 | 5.1% |
| Q1 2022 | 192 | $1.5B | 53,576,873 | 48 | 53 | 70 | 4.2% |
| Q4 2021 | 165 | $871.9M | 51,402,331 | 28 | 45 | 56 | 2.7% |
| Q3 2021 | 147 | $702.3M | 50,175,054 | 26 | 42 | 52 | 3.9% |
| Q2 2021 | 144 | $681.3M | 52,246,599 | 27 | 44 | 45 | 1.2% |
| Q1 2021 | 138 | $832.3M | 46,676,276 | 25 | 42 | 51 | 1.1% |
| Q4 2020 | 132 | $519.9M | 46,808,383 | 18 | 39 | 47 | 0.6% |
| Q3 2020 | 130 | $345.1M | 48,493,336 | 22 | 37 | 41 | 0.6% |
| Q2 2020 | 119 | $326.0M | 45,435,220 | 21 | 29 | 46 | 0.6% |
| Q1 2020 | 128 | $174.4M | 46,369,138 | 19 | 43 | 36 | 3.8% |
| Q4 2019 | 140 | $393.5M | 50,464,749 | 19 | 46 | 37 | 3.7% |
| Q3 2019 | 141 | $318.5M | 47,026,313 | 13 | 50 | 44 | 2.0% |
| Q2 2019 | 147 | $340.4M | 48,351,115 | 19 | 53 | 40 | 1.9% |
| Q1 2019 | 149 | $431.1M | 47,747,049 | 9 | 60 | 42 | 1.7% |
| Q4 2018 | 153 | $371.9M | 49,843,261 | 3 | 6 | 1 | 2.0% |