CENTURY ALUMINUM COMPANY (CENX) Institutional Shareholders
CENTURY ALUMINUM COMPANY (CENX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $5.38B in CENX holdings during the latest filing period.
Glencore Plc is currently the largest disclosed institutional shareholder of CENX tracked by InsiderSet, reporting ownership valued at approximately $1.37B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.33B, representing an estimated loss of -2.70% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% of the total disclosed CENX value among the investors covered in this analysis. Major shareholders include Glencore Plc, Blackrock, Inc., State Street Corp, and several other long-term asset managers with concentrated positions in CENTURY ALUMINUM COMPANY (CENX).
This page ranks the largest institutional CENX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
391
Total Reported Value
$5.38B
Largest Holder
Glencore Plc
Largest Position
$1.37B
Insider Transactions (90d)
6
Latest Filing Quarter
Q2 2026
New Institutional Positions
103
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Glencore Plc | 28.07% | 29,690,702 | $1,366,069,199 | $1,329,252,729 | -$36,816,470 | -2.70% | |
| Blackrock, Inc. | 0.01% | 9,010,379 | $528,819,144 | $403,394,668 | -$125,424,476 | -23.72% | |
| State Street Corp | 0.01% | 4,667,540 | $273,937,923 | $208,965,766 | -$64,972,157 | -23.72% | |
| Vanguard Portfolio Management Llc | 0.01% | 4,241,557 | $248,936,980 | $189,894,507 | -$59,042,473 | -23.72% | |
| Sourcerock Group Llc | 6.63% | 2,687,249 | $157,714,644 | $120,308,138 | -$37,406,506 | -23.72% | |
| Fmr Llc | 0.01% | 2,660,054 | $156,118,594 | $119,090,618 | -$37,027,976 | -23.72% | |
| Vanguard Capital Management Llc | 0.00% | 2,586,107 | $151,778,620 | $115,780,010 | -$35,998,610 | -23.72% | |
| Dimensional Fund Advisors Lp | 0.03% | 2,190,922 | $128,552,239 | $98,087,578 | -$30,464,661 | -23.70% | |
| Invesco Ltd. | 0.02% | 2,076,528 | $121,871,428 | $92,966,159 | -$28,905,269 | -23.72% | |
| Millennium Management Llc | 0.09% | 1,987,625 | $116,653,711 | $88,985,971 | -$27,667,740 | -23.72% | |
| Morgan Stanley | 0.01% | 1,585,230 | $93,037,241 | $70,970,747 | -$22,066,494 | -23.72% | |
| Encompass Capital Advisors Llc | 3.71% | 1,551,362 | $91,049,436 | $69,454,477 | -$21,594,959 | -23.72% | |
| Geode Capital Management, Llc | 0.01% | 1,540,212 | $90,414,207 | $68,955,291 | -$21,458,916 | -23.73% | |
| D. E. Shaw & Co., Inc. | 0.07% | 1,433,369 | $84,124,427 | $64,171,930 | -$19,952,497 | -23.72% | |
| Jane Street Group, Llc | 0.08% | 1,320,942 | $77,526,086 | $59,138,573 | -$18,387,513 | -23.72% | |
| Citadel Advisors Llc | 0.05% | 1,320,867 | $77,521,684 | $59,135,216 | -$18,386,468 | -23.72% | |
| Assenagon Asset Management S.A. | 0.09% | 1,531,167 | $70,448,994 | $68,550,347 | -$1,898,647 | -2.70% | |
| Impala Asset Management Llc | 26.66% | 975,000 | $57,222,750 | $43,650,750 | -$13,572,000 | -23.72% | |
| Fisher Asset Management, Llc | 0.02% | 851,301 | $49,962,854 | $38,112,746 | -$11,850,108 | -23.72% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.06% | 800,131 | $46,949,162 | $35,821,865 | -$11,127,297 | -23.70% | |
| Bridgewater Associates, Lp | 0.19% | 732,517 | $42,991,423 | $32,794,786 | -$10,196,637 | -23.72% | |
| Voloridge Investment Management, Llc | 0.17% | 720,735 | $42,299,937 | $32,267,306 | -$10,032,631 | -23.72% | |
| Bank Of America Corp | 0.00% | 608,794 | $35,730,120 | $27,255,707 | -$8,474,413 | -23.72% | |
| Allspring Global Investments Holdings, Llc | 0.06% | 562,030 | $35,694,526 | $25,162,083 | -$10,532,443 | -29.51% | |
| Deutsche Bank Ag\ | 0.01% | 598,025 | $35,098,088 | $26,773,579 | -$8,324,509 | -23.72% | |
| Qube Research & Technologies Ltd | 0.05% | 589,928 | $34,622,874 | $26,411,077 | -$8,211,797 | -23.72% | |
| Ubs Group Ag | 0.01% | 586,766 | $34,437,296 | $26,269,514 | -$8,167,782 | -23.72% | |
| Mountaineer Partners Management, Llc | 17.02% | 583,997 | $34,274,784 | $26,145,546 | -$8,129,238 | -23.72% | |
| Point72 Asset Management, L.P. | 0.06% | 569,451 | $33,421,079 | $25,494,321 | -$7,926,758 | -23.72% | |
| Northern Trust Corp | 0.00% | 548,744 | $32,205,785 | $24,567,269 | -$7,638,516 | -23.72% | |
| Charles Schwab Investment Management Inc | 0.00% | 544,511 | $31,957,351 | $24,377,757 | -$7,579,594 | -23.72% | |
| Bornite Capital Management Lp | 5.35% | 542,000 | $31,809,980 | $24,265,340 | -$7,544,640 | -23.72% | |
| Kinetic Partners Management, Lp | 1.75% | 531,700 | $31,205,473 | $23,804,209 | -$7,401,264 | -23.72% | |
| Merewether Investment Management, Lp | 0.58% | 514,800 | $30,213,612 | $23,047,596 | -$7,166,016 | -23.72% | |
| Jefferies Financial Group Inc. | 0.35% | 484,193 | $28,417,287 | $21,677,321 | -$6,739,966 | -23.72% | |
| Rokos Capital Management Llp | 0.46% | 436,688 | $25,635,769 | $19,550,522 | -$6,085,247 | -23.74% | |
| Squarepoint Ops Llc | 0.05% | 410,093 | $24,068,358 | $18,359,864 | -$5,708,494 | -23.72% | |
| Goldman Sachs Group Inc | 0.00% | 379,148 | $22,252,196 | $16,974,456 | -$5,277,740 | -23.72% | |
| Wellington Management Group Llp | 0.00% | 378,447 | $22,211,054 | $16,943,072 | -$5,267,982 | -23.72% | |
| Vanguard Fiduciary Trust Co | 0.01% | 378,295 | $22,202,134 | $16,936,267 | -$5,265,867 | -23.72% | |
| Westend Capital Management, Llc | 6.66% | 378,073 | $22,189,104 | $16,926,328 | -$5,262,776 | -23.72% | |
| Bank Of New York Mellon Corp | 0.00% | 335,864 | $19,711,853 | $15,036,631 | -$4,675,222 | -23.72% | |
| Boston Partners | 0.02% | 309,896 | $18,192,482 | $13,874,044 | -$4,318,438 | -23.74% | |
| Nuveen, Llc | 0.00% | 308,977 | $18,133,860 | $13,832,900 | -$4,300,960 | -23.72% | |
| Bw Gestao De Investimentos Ltda. | 0.81% | 308,758 | $18,121,007 | $13,823,096 | -$4,297,911 | -23.72% | |
| Engineers Gate Manager Lp | 0.22% | 297,509 | $17,460,804 | $13,319,478 | -$4,141,326 | -23.72% | |
| Picton Mahoney Asset Management | 0.18% | 295,330 | $17,332,918 | $13,221,924 | -$4,110,994 | -23.72% | |
| Nicholas Investment Partners, Lp | 1.24% | 292,402 | $17,161,073 | $13,090,838 | -$4,070,235 | -23.72% | |
| Tudor Investment Corp Et Al | 0.09% | 279,161 | $16,383,959 | $12,498,038 | -$3,885,921 | -23.72% | |
| Steamboat Capital Partners, Llc | 4.03% | 276,248 | $16,212,995 | $12,367,623 | -$3,845,372 | -23.72% |
Frequently asked questions about CENX
Who owns the most CENX stock?
The largest holders of CENX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for CENTURY ALUMINUM COMPANY (CENX).
Is CENX widely held by superinvestors?
Many widely followed stocks like CENX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly CENX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.