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Disclosery

CENX CENTURY ALUM CO

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COM (common), issuer CIK 949157

380 managers (387 13F filers) reported a position in CENX shares at 2026-03-31, 100,969,894 shares in all. 100 filers opened a position and 41 filers sold out during the quarter.

Managers
380
13F filers
387
New
100
Added
130
Reduced
122
Sold out
41
Shares held by filers
100,969,894

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Glencore plcin group Glencore plc29,690,702$1.74B29.46%-6,315,24513F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.9,010,379$529M0.01%-474,18813F-HRTimelineGroup
VANGUARD GROUP INCgroup of 7 filers holding7,308,892$429M+7,298,331Timeline
STATE STREET CORPin group STATE STREET CORP4,667,540$274M0.01%+371,82913F-HRTimelineGroup
Sourcerock Group LLC2,687,249$158M6.63%-934,73513F-HRTimeline
FMR LLCin group FMR LLC2,660,054$156M0.01%+2,651,34813F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP2,190,922$129M0.03%-574,21013F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.2,076,528$122M0.01%+1,447,11613F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,987,625$117M0.09%+569,59313F-HRTimelineGroup
Assenagon Asset Management S.A.1,830,324$107M0.17%+957,57113F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY1,585,230$93M0.01%-23,86313F-HRTimelineGroup
Encompass Capital Advisors LLCin group Encompass Capital Advisors LLC1,551,362$91M3.71%+1,051,52513F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,540,212$90.4M0.01%+221,70913F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,433,369$84.1M0.07%+242,43213F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC1,320,942$77.5M0.08%+1,279,42413F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,320,867$77.5M0.05%+623,65013F-HRTimelineGroup
Impala Asset Management LLC975,000$57.2M26.66%+117,19513F-HRTimeline
Fisher Asset Management, LLC851,301$50M0.02%-15,64313F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…800,131$46.9M0.06%-693,69213F-HRTimelineGroup
Bridgewater Associates, LP732,517$43M0.19%+460,71913F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC720,735$42.3M0.17%-219,59013F-HRTimeline
UBS Group AGgroup of 2 filers holding683,083$40.1M-1,175,277Timeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/608,794$35.7M<0.01%+301,26813F-HRTimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …562,030$35.7M0.06%+106,15413F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\598,025$35.1M0.01%+489,74713F-HRTimelineGroup
Qube Research & Technologies Ltd589,928$34.6M0.05%-136,26413F-HRTimeline
Mountaineer Partners Management, LLC583,997$34.3M17.02%-24,47813F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.569,451$33.4M0.06%+397,04313F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP548,744$32.2M<0.01%+26,98213F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co544,511$32M<0.01%+8,58713F-HRTimelineGroup
Bornite Capital Management LP542,000$31.8M5.35%+292,00013F-HRTimeline
Kinetic Partners Management, LP531,700$31.2M1.75%new13F-HRTimeline
Merewether Investment Management, LP514,800$30.2M0.58%new13F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.484,193$28.4M0.35%+377,49313F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO516,623$27.5M<0.01%+302,45013F-HR/ATimelineGroup
Rokos Capital Management LLPin group Rokos Capital Management LLP436,688$25.6M0.46%new13F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC410,093$24.1M0.05%+372,87413F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC379,148$22.3M<0.01%-286,55413F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…378,447$22.2M<0.01%+180,60413F-HRTimelineGroup
Westend Capital Management, LLC378,073$22.2M6.66%+3,79913F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp335,864$19.7M<0.01%+46313F-HRTimelineGroup
Boston Partnersin group Boston Trust Walden Corp309,896$18.2M0.02%-290,34113F-HRTimelineGroup
Nuveen, LLCin group TIAA308,977$18.1M<0.01%+191,66713F-HRTimelineGroup
BW Gestao de Investimentos Ltda.308,758$18.1M0.81%+125,08913F-HRTimeline
Engineers Gate Manager LP297,509$17.5M0.22%+247,98513F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT295,330$17.3M0.18%new13F-HRTimeline
Nicholas Investment Partners, LP292,402$17.2M1.24%+1,44213F-HRTimeline
Drummond Knight Asset Management Pty Ltd281,092$16.5M5.84%-32,28413F-HRTimeline
TUDOR INVESTMENT CORP ET AL279,161$16.4M0.09%-86,69613F-HRTimeline
Steamboat Capital Partners, LLC276,248$16.2M4.03%-147,56013F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co275,405$16.2M0.03%+158,89413F-HRTimelineGroup
ROYCE & ASSOCIATES LP264,341$15.5M0.15%-49,94813F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC260,426$15.3M0.01%-140,21113F-HRTimelineGroup
Wealth High Governance Asset Management…259,475$15.2M2.38%+106,90913F-HR/ATimeline
CONGRESS ASSET MANAGEMENT CO253,435$14.9M0.11%+46,99613F-HRTimeline
CDC Financial, Inc.246,680$14.5M11.99%-97,52013F-HRTimeline
Public Sector Pension Investment Board243,897$14.3M0.04%+59,55413F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC232,034$13.6M0.01%-742,20713F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/227,736$13.4M0.01%+193,26713F-HRTimelineGroup
Yaupon Capital Management LP211,201$12.4M0.61%new13F-HRTimeline
HRT FINANCIAL LP195,992$11.5M0.03%+122,49013F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…184,061$10.8M0.02%+126,46113F-HRTimeline
ICON ADVISERS INC/CO173,200$10.2M2.35%-68,80013F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC166,233$9.76M<0.01%+100,92813F-HRTimelineGroup
First Eagle Investment Management, LLCin group First Eagle Investment Manage…163,087$9.57M0.02%-138,52513F-HR/ATimelineGroup
CIBC WORLD MARKET INC.160,632$9.43M0.02%new13F-HRTimeline
RHUMBLINE ADVISERS158,208$9.29M0.01%+6,85913F-HRTimeline
SYSTEMATIC FINANCIAL MANAGEMENT LP157,722$9.26M0.21%-8,80513F-HRTimeline
CSM Advisors, LLC155,684$9.14M0.22%-68,49613F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN151,938$8.92M<0.01%-54,75313F-HR/ATimelineGroup
Burkehill Global Management, LP150,000$8.8M0.44%-350,00013F-HRTimeline
Insight Wealth Strategies, LLC146,024$8.57M0.96%-8,04213F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC143,299$8.41M<0.01%+38,48013F-HRTimelineGroup
Wealth High Governance Capital Ltda140,525$8.25M2.48%+43,09113F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC139,499$8.19M0.01%+21,50013F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources124,816$7.33M<0.01%+77,43613F-HRTimelineGroup
COHEN & STEERS, INC.in group COHEN & STEERS, INC.118,183$6.94M0.01%-24,58613F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS113,252$6.65M<0.01%+14,17313F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc112,563$6.61M<0.01%-12,84113F-HRTimelineGroup
Swiss National Bank110,450$6.48M<0.01%013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC109,592$6.43M<0.01%-20,66713F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.159,508$6.25M<0.01%+84,19013F-HRTimeline
Edgestream Partners, L.P.105,739$6.21M0.2%-51,68513F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC102,496$6.02M0.01%+10313F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC100,631$5.91M<0.01%+3,08113F-HR/ATimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD100,242$5.88M0.01%-73,69713F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management95,068$5.58M0.01%new13F-HRTimelineGroup
Portolan Capital Management, LLCin group Portolan Capital Management, …95,039$5.58M0.3%new13F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd90,400$5.31M0.1%-50,80013F-HRTimeline
CAXTON ASSOCIATES LLP88,690$5.21M0.12%-12,75913F-HRTimeline
Informed Momentum Co LLC85,714$5.03M0.58%-8,91313F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC82,945$4.87M0.11%-64,85013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC82,822$4.86M<0.01%+7,69713F-HRTimelineGroup
MOORE CAPITAL MANAGEMENT, LP82,752$4.86M0.18%new13F-HRTimeline
GeoSphere Capital Management, LLC82,000$4.81M2.9%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…78,472$4.61M0.01%-132,01113F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC73,151$4.29M<0.01%+60,34513F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC73,078$4.29M0.01%+22,80513F-HRTimelineGroup
SEGALL BRYANT & HAMILL, LLC72,085$4.23M0.06%-27,44313F-HR/ATimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…69,449$4.08M<0.01%-78,34313F-HRTimelineGroup
Orion Resource Partners LPin group Orion Resource Partners LP68,837$4.04M1.85%new13F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP65,666$3.85M<0.01%-31,75313F-HRTimelineGroup
Voleon Capital Management LP64,884$3.81M0.08%-32,90613F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…63,944$3.75M<0.01%+12,71913F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC63,829$3.75M<0.01%-43,16113F-HRTimeline
Riggs Asset Managment Co. Inc.63,292$3.71M0.76%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/62,500$3.67M<0.01%+10,77513F-HRTimeline
AXIOM INVESTORS LLC /DE58,610$3.44M0.04%new13F-HRTimeline
Aldebaran Capital, LLC57,570$3.38M2.58%-13013F-HRTimeline
Aquatic Capital Management LLC57,380$3.37M0.1%new13F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…57,184$3.36M0.01%-23,98713F-HRTimeline
SummitTX Capital, L.P.57,074$3.35M0.11%new13F-HRTimeline
WEXFORD CAPITAL LP55,900$3.28M0.54%-188,74913F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd54,645$3.21M0.04%+32,56413F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.54,196$3.18M0.01%+3,76413F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO54,162$3.18M<0.01%+1,31013F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC51,676$3.03M0.04%new13F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND50,901$2.99M<0.01%+1,78013F-HRTimeline
Hartree Partners, LP50,000$2.93M0.64%-166,68813F-HRTimeline
Ruffer LLP49,850$2.93M0.12%+25,99913F-HRTimeline
Caprock Group, LLC49,141$2.88M0.07%new13F-HRTimeline
Headlands Technologies LLC48,903$2.87M0.33%-28,52913F-HRTimeline
Cinctive Capital Management LP48,165$2.83M0.19%new13F-HRTimeline
FORA Capital, LLC46,442$2.73M0.2%new13F-HRTimeline
LPL Financial LLC45,651$2.68M<0.01%-22,87313F-HRTimeline
Marnell Management LLC45,298$2.66M1.77%-61,75813F-HRTimeline
Trexquant Investment LP44,268$2.6M0.02%-62,44813F-HRTimeline
Cetera Investment Advisers43,612$2.56M<0.01%+36,46913F-HRTimeline
State of Wyoming43,532$2.55M0.3%-13,39713F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…42,837$2.51M0.01%new13F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC41,657$2.44M0.02%-7,69213F-HRTimeline
SummerHaven Investment Management, LLC41,364$2.43M1.49%-2,11513F-HRTimeline
Legato Capital Management LLC40,954$2.4M0.22%-1913F-HRTimeline
Sagefield Capital LPin group Sagefield Capital LP39,566$2.32M0.17%new13F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC39,486$2.32M0.18%+16,30813F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding38,959$2.29M-320,354Timeline
ALGERT GLOBAL LLC38,039$2.23M0.03%-11,55413F-HR/ATimeline
Natixis Investment Managersgroup of 2 filers holding36,951$2.17M-15,040Timeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…35,514$2.08M<0.01%-1,04613F-HRTimelineGroup
DRW Securities, LLC34,884$2.05M0.11%new13F-HRTimeline
Advisory Services Network, LLC33,265$1.95M0.03%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…32,055$1.88M<0.01%+5,78513F-HRTimeline
OCCUDO QUANTITATIVE STRATEGIES LP31,518$1.87M0.1%+2,97013F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…31,026$1.82M0.01%+1,51113F-HRTimelineGroup
PVG ASSET MANAGEMENT CORP33,098$1.81M1.07%+27,85413F-HRTimeline
South Dakota Investment Council30,487$1.79M0.03%-286,87413F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…30,169$1.77M0.02%new13F-HRTimelineGroup
State of Alaska, Department of Revenue29,763$1.75M0.02%-84113F-HRTimeline
Creative Planningin group Creative Planning29,230$1.72M<0.01%+9,15713F-HRTimelineGroup
Schonfeld Strategic Advisors LLC28,892$1.7M0.01%-99,06513F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD28,500$1.67M<0.01%+23,80013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …27,920$1.64M<0.01%+2,23013F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA27,802$1.63M<0.01%-9,38713F-HRTimelineGroup
CoreCommodity Management, LLC27,031$1.59M0.29%-42,35313F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…26,898$1.58M0.01%+13,63313F-HRTimeline
CITIGROUP INCin group CITIGROUP INC26,272$1.54M<0.01%-11113F-HRTimelineGroup
Harvest Investment Services, LLC25,720$1.51M0.28%new13F-HRTimeline
Aberdeen Group plcin group Aberdeen Group plc25,591$1.5M<0.01%-4,23113F-HRTimelineGroup
Illinois Municipal Retirement Fund24,204$1.42M0.02%-4,32213F-HRTimeline
Louisiana State Employees Retirement Sy…23,600$1.39M0.02%-80013F-HRTimeline
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…23,416$1.37M0.05%-11,58413F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson22,906$1.35M<0.01%013F-HR/ATimelineGroup
Riverwater Partners LLC22,650$1.33M0.44%new13F-HRTimeline
Sigma Planning Corp22,158$1.3M0.04%-9,71213F-HRTimeline
State of Tennessee, Department of Treas…21,072$1.24M<0.01%+2,30013F-HRTimeline
MML INVESTORS SERVICES, LLC20,728$1.22M<0.01%-2,43913F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP20,687$1.21M<0.01%+12,74313F-HRTimelineGroup
Scientech Research LLC20,487$1.2M1%-4,19313F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd20,166$1.18M0.02%+11,06913F-HRTimelineGroup
Hodges Capital Management Inc.20,000$1.17M0.1%013F-HRTimeline
Alphadyne Asset Management LP20,000$1.17M0.15%new13F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd19,600$1.15M0.04%-23,01413F-HRTimelineGroup
Fieldview Capital Management, LLC19,000$1.12M0.33%new13F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…18,408$1.08M<0.01%013F-HRTimeline
Concurrent Investment Advisors, LLCin group Concurrent Investment Advisor…17,929$1.05M0.01%-5,00613F-HRTimelineGroup
OP Asset Management Ltd17,683$1.04M0.01%new13F-HR/ATimeline
Integrated Wealth Concepts LLC15,962$937K0.01%new13F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM15,382$903K0.01%-28113F-HRTimeline
Police & Firemen's Retirement System of…15,344$901K0.01%+87813F-HRTimeline
AMALGAMATED BANK15,307$898K0.01%-14013F-HRTimeline
HIMENSION CAPITAL (SINGAPORE) PTE. LTD.15,276$897K0.07%-9,97413F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC15,176$891K<0.01%+5,72413F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC14,998$880K0.04%-13,61613F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC14,499$860K<0.01%+2,76713F-HRTimelineGroup
ExodusPoint Capital Management, LP14,604$857K0.01%-140,48313F-HRTimeline
SHEETS SMITH WEALTH MANAGEMENT14,594$857K0.1%-6313F-HRTimeline
Entropy Technologies, LP14,589$856K0.04%-12,36413F-HRTimeline
Northwest & Ethical Investments L.P.13,175$851K0.02%new13F-HRTimeline
Quantbot Technologies LP14,383$844K0.03%-98,58313F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC14,367$843K<0.01%+14,02613F-HRTimeline
Callan Family Office, LLCin group Callan Family Office, LLC14,304$840K0.02%-41513F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…14,248$836K<0.01%+14,03613F-HRTimelineGroup
YOUSIF CAPITAL MANAGEMENT, LLC14,208$834K0.01%-7513F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al14,000$822K0.01%+80013F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP13,570$796K0.01%new13F-HRTimelineGroup
SG Americas Securities, LLC13,528$794K<0.01%-7,20413F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…13,157$772K<0.01%-1513F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC13,091$768K<0.01%+18013F-HRTimelineGroup
Quantinno Capital Management LP12,996$763K<0.01%+2,60113F-HRTimeline
Perennial Advisors, LLC12,868$755K0.13%-6,50013F-HRTimeline

Events

  • BlackRock, Inc. reported 10,395,973 CENX shares, 10.5% of the class, as of 2026-09-30, in a 13G/A filed 2026-10-05. 0002012383-26-003330

    Accepted , ingested