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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
IMC-Chicago, LLC12,680$744K0.01%-25,11013F-HRTimeline
Oceanic Investment Management LTD12,553$737K0.63%-13,43513F-HRTimeline
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…12,497$733K<0.01%new13F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP14,677$729K<0.01%+14,44313F-HRTimelineGroup
KLP KAPITALFORVALTNING AS12,400$728K<0.01%+40013F-HRTimeline
CHESAPEAKE ASSET MANAGEMENT LLC12,260$720K0.58%-75513F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND12,163$714K0.01%-3913F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …12,029$706K<0.01%+10,48713F-HRTimelineGroup
Pathstone Holdings, LLCin group Pathstone Holdings, LLC11,840$695K<0.01%+64213F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP11,754$690K<0.01%+4,84213F-HRTimelineGroup
Counterpoint Mutual Funds LLC11,586$680K0.1%new13F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC11,073$650K<0.01%+1,21313F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC10,999$646K0.01%-58413F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV10,688$627K<0.01%+1,54813F-HRTimeline
GSA CAPITAL PARTNERS LLP10,650$625K0.04%-35,95913F-HRTimeline
AXQ CAPITAL, LP10,627$624K0.08%new13F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…10,465$614K<0.01%new13F-HRTimeline
FCG Investment Co10,409$611K0.27%13F-HRTimeline
Polymer Capital Management (US) LLC10,000$587K0.09%-20,00013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC9,943$584K<0.01%new13F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC9,828$577K<0.01%new13F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP10,584$564K<0.01%+97813F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…9,587$563K<0.01%+7313F-HRTimelineGroup
Rossby Financial, LCC8,700$553K0.12%-35013F-HRTimeline
ARISTEIA CAPITAL, L.L.C.9,339$548K0.01%-7,18313F-HRTimeline
Optimist Retirement Group LLC9,037$530K0.23%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.9,020$529K<0.01%-7,25513F-HRTimelineGroup
ProShare Advisors LLC8,812$517K<0.01%-1,45713F-HRTimeline
INDEPENDENT FINANCIAL GROUP, LLC8,350$490K0.01%new13F-HR/ATimeline
Caitong International Asset Management …8,005$470K0.09%new13F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC7,947$464K<0.01%new13F-HRTimelineGroup
Summit Global Investmentsin group Summit Global Investments7,866$462K0.03%+24113F-HRTimelineGroup
Maryland State Retirement & Pension Sys…7,757$455K0.01%013F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…7,707$452K0.03%new13F-HRTimelineGroup
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP7,647$449K<0.01%-89713F-HRTimelineGroup
HighTower Advisors, LLC7,593$446K<0.01%new13F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…7,471$438K<0.01%new13F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC7,437$436K<0.01%new13F-HRTimelineGroup
RENAISSANCE GROUP LLC7,415$435K0.02%new13F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…7,161$420K<0.01%new13F-HRTimelineGroup
Numerai GP LLC7,100$417K0.04%-4,23313F-HRTimeline
Empowered Funds, LLC6,880$404K<0.01%new13F-HR/ATimeline
Savant Capital, LLCin group Savant Capital, LLC6,802$399K<0.01%+52313F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…6,721$394K0.01%+3,20813F-HRTimelineGroup
HIGHLAND CAPITAL MANAGEMENT, LLC6,382$375K0.02%new13F-HRTimeline
JOURNEY STRATEGIC WEALTH LLC6,347$373K0.01%+7213F-HRTimeline
Systematic Alpha Investments, LLC6,200$364K0.01%013F-HRTimeline
EP Wealth Advisors, LLC6,148$361K<0.01%+36213F-HRTimeline
ANB BANK6,106$358K0.14%-9713F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…6,089$357K<0.01%+813F-HRTimelineGroup
Everhart Financial Group, Inc.5,970$350K0.03%+4313F-HRTimeline
Brooklyn Investment Group5,961$350K0.01%new13F-HRTimeline
AE Wealth Management LLC5,812$341K<0.01%+45113F-HRTimeline
Sequoia Financial Advisors, LLC5,750$337K<0.01%new13F-HRTimeline
Baird Financial Group, Inc.in group Baird Financial Group, Inc.5,473$321K<0.01%-235,13713F-HRTimelineGroup
CHOREO, LLC5,386$316K<0.01%+17813F-HRTimeline
XPONANCE LLC5,262$309K<0.01%new13F-HRTimeline
Kraft, Davis & Associates, LLC5,058$302K0.06%+5813F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…5,090$299K<0.01%-28413F-HRTimelineGroup
Belpointe Asset Management LLC5,080$298K0.01%new13F-HRTimeline
OXFORD ASSET MANAGEMENT LLP5,079$298K0.12%-4,53613F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Aigen Investment Management, LP5,014$294K0.08%new13F-HRTimeline
TWINBEECH CAPITAL LP4,908$288K0.03%new13F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC4,834$284K<0.01%new13F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,656$273K0.01%+24213F-HRTimelineGroup
Marex Group Ltdin group Marex Group Ltd4,600$270K<0.01%new13F-HRTimelineGroup
Compagnie Lombard Odier SCmA4,540$266K<0.01%new13F-HRTimeline
NewEdge Advisors, LLC4,513$265K<0.01%+4,28313F-HR/ATimeline
Crossmark Global Holdings, Inc.4,471$262K<0.01%new13F-HRTimeline
Vise Technologies, Inc.6,616$259K0.01%013F-HRTimeline
GAMMA Investing LLC4,373$257K0.01%-2213F-HRTimeline
Moran Wealth Management, LLC4,248$249K0.01%new13F-HRTimeline
CIBC Asset Management Inc4,040$237K<0.01%new13F-HRTimeline
Olympiad Research LP3,915$230K0.7%new13F-HRTimeline
Cambridge Investment Research Advisors,…3,909$229K<0.01%-10,29613F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP3,775$222K<0.01%new13F-HRTimelineGroup
LEAVELL INVESTMENT MANAGEMENT, INC.3,765$221K0.01%new13F-HRTimeline
Madrona Financial Services, LLC3,680$216K0.05%-3,57013F-HRTimeline
&PARTNERS3,608$212K<0.01%new13F-HRTimeline
Orion Porfolio Solutions, LLC3,593$211K<0.01%new13F-HRTimeline
PRAXIS INVESTMENT MANAGEMENT INC3,551$208K0.01%-4,19913F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC3,477$204K<0.01%new13F-HRTimeline
CWM, LLCin group CWM, LLC2,525$148K<0.01%+90613F-HRTimelineGroup
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…2,431$143K0.01%+1,42113F-HRTimelineGroup
MEEDER ASSET MANAGEMENT INCin group Meeder Advisory Services, Inc.2,213$130K0.01%-2,27413F-HRTimelineGroup
KBC Group NVin group KBC Group NV2,199$129K<0.01%new13F-HRTimelineGroup
Vestcor Inc2,062$121K<0.01%new13F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,684$98.8K<0.01%+79713F-HRTimelineGroup
SIGNATUREFD, LLC1,542$90.5K<0.01%+6313F-HRTimeline
Erste Asset Management GmbHin group Erste Asset Management GmbH1,637$87.2K<0.01%013F-HRTimelineGroup
HANTZ FINANCIAL SERVICES, INC.1,455$85K<0.01%+23713F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
New Age Alpha Advisors, LLC1,437$84.3K<0.01%-2613F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…1,419$83.3K<0.01%+29713F-HR/ATimelineGroup
Farther Finance Advisors, LLC1,290$81.9K<0.01%+5113F-HRTimeline
CoreCap Advisors, LLC1,387$81.4K<0.01%-1,26513F-HRTimeline
NISA INVESTMENT ADVISORS, LLC1,360$79.8K<0.01%+44413F-HRTimeline
Covestor Ltd1,306$76K0.05%-6,67413F-HRTimeline
Signature Equity Partners, LLC1,263$74.1K0.04%-4013F-HRTimeline
Pinnacle Wealth Planning Services, Inc.1,234$72.4K0.01%+3213F-HRTimeline
QUADRANT CAPITAL GROUP LLC1,190$69.8K<0.01%+40913F-HR/ATimeline
Leonteq Securities AG1,144$67.1K<0.01%new13F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…965$56.6K<0.01%+16513F-HRTimelineGroup
Larson Financial Group LLC869$51K<0.01%+27813F-HRTimeline
IFP Advisors, Inc852$50K<0.01%+84013F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC838$49.2K<0.01%-1713F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.817$48K<0.01%+59413F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK800$47K<0.01%013F-HRTimelineGroup
STRS OHIO800$47K<0.01%new13F-HRTimeline
SUMMIT SECURITIES GROUP LLC717$42.1K0.02%new13F-HRTimeline
Salomon & Ludwin, LLC660$41.3K<0.01%+28613F-HRTimeline
Versant Capital Management, Inc512$30K<0.01%+413F-HRTimeline
HOLLENCREST CAPITAL MANAGEMENT500$29.3K<0.01%new13F-HRTimeline
MAI Capital Management477$28K<0.01%-1613F-HRTimeline
PRIVATE TRUST CO NA470$27.6K<0.01%-25013F-HRTimeline
Kemnay Advisory Services Inc.470$27.6K<0.01%new13F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\461$27.1K<0.01%-45413F-HRTimelineGroup
Grove Bank & Trust457$26.8K<0.01%013F-HRTimeline
Delos Wealth Advisors, LLC425$24.9K0.01%new13F-HRTimeline
Sterling Capital Management LLC369$21.7K<0.01%+1813F-HRTimeline
Arax Advisory Partners365$21.4K<0.01%-53613F-HRTimeline
LANARK FINANCIAL, INC.349$20.5K<0.01%-19113F-HRTimeline
WHITTIER TRUST CO OF NEVADA INC310$20K<0.01%new13F-HRTimeline
UMB Bank, n.a.337$19.8K<0.01%+613F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Allworth Financial LP331$19.4K<0.01%+23113F-HRTimeline
Smartleaf Asset Management LLC278$14.8K<0.01%-90713F-HRTimeline
FINANCIAL CONSULATE, INC250$14.7K<0.01%013F-HRTimeline
Carolina Wealth Advisors, LLC243$14.3K0.01%new13F-HRTimeline
FIRST HORIZON CORP232$13.6K<0.01%013F-HRTimeline
WPG Advisers, LLC230$13.5K0.01%013F-HRTimeline
Fortitude Family Office, LLC203$11.9K<0.01%+7913F-HRTimeline
Cassaday & Co Wealth Management LLC186$10.9K<0.01%new13F-HRTimeline
Parallel Advisors, LLC174$10.2K<0.01%013F-HR/ATimeline
SBI Securities Co., Ltd.169$9.92K<0.01%+14213F-HRTimeline
TWIN PEAKS WEALTH ADVISORS, LLC164$9.62K<0.01%new13F-HRTimeline
Sound Income Strategies, LLC146$9.27K<0.01%013F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.159$9K<0.01%+1213F-HRTimeline
Physician Wealth Advisors, Inc.151$8.86K<0.01%013F-HRTimeline
Annis Gardner Whiting Capital Advisors,…147$8.63K<0.01%+11313F-HRTimeline
ROTHSCHILD INVESTMENT LLC143$8.39K<0.01%+1613F-HRTimeline
Kilter Group LLC130$7.63K<0.01%+213F-HRTimeline
Root Financial Partners, LLC114$6.69K<0.01%new13F-HRTimeline
Parkside Financial Bank & Trust105$6.16K<0.01%+113F-HRTimeline
Keating Financial Advisory Services, In…104$6.1K<0.01%new13F-HRTimeline
Capital Advisors, Ltd. LLC107$6K<0.01%013F-HRTimeline
Steward Partners Investment Advisory, L…100$5.87K<0.01%+5013F-HRTimeline
Financially Speaking Inc93$5.46K0.03%new13F-HRTimeline
MassMutual Private Wealth & Trust, FSB77$4.52K<0.01%+1213F-HRTimeline
Bare Financial Services, Inc77$4.52K<0.01%013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…75$4.4K<0.01%new13F-HRTimeline
CX Institutional62$4K<0.01%013F-HRTimeline
Colonial Trust Co / SCin group Colonial Trust Advisors66$3.53K<0.01%-2713F-HRTimelineGroup
Golden State Wealth Management, LLC50$2.94K<0.01%new13F-HRTimeline
Valued Wealth Advisors LLC48$2.82K<0.01%new13F-HRTimeline
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.48$2.82K<0.01%013F-HRTimelineGroup
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…33$1.94K<0.01%013F-HRTimelineGroup
JPL Wealth Management, LLC32$1.88K<0.01%new13F-HR/ATimeline
JFS WEALTH ADVISORS, LLC23$1.35K<0.01%new13F-HRTimeline
Stone House Investment Management, LLC23$1.35K<0.01%new13F-HRTimeline
Essential Partners LLC22$1.29K<0.01%+113F-HRTimeline
C M BIDWELL & ASSOCIATES LTD21$1.23K<0.01%013F-HRTimeline
CVA Family Office, LLC18$1.06K<0.01%new13F-HRTimeline
Decker Retirement Planning Inc.16$939<0.01%new13F-HRTimeline
Quarry LP11$646<0.01%-1,14013F-HRTimeline
Cedar Mountain Advisors, LLC10$587<0.01%013F-HRTimeline
Basecamp Wealth Advisors LLC10$587<0.01%-9313F-HRTimeline
GILPIN WEALTH MANAGEMENT, LLC9$529<0.01%+513F-HRTimeline
Godfrey Financial Associates, Inc.8$470<0.01%013F-HRTimeline
Vermillion Wealth Management, Inc.7$411<0.01%new13F-HRTimeline
SJS Investment Consulting Inc.7$411<0.01%new13F-HRTimeline
True Wealth Design, LLC7$411<0.01%013F-HRTimeline
TD Capital Management LLC6$352<0.01%013F-HRTimeline
Ankerstar Wealth, LLC6$352<0.01%013F-HRTimeline
Aster Capital Management (DIFC) Ltd16$297<0.01%new13F-HRTimeline
HFM Investment Advisors, LLC4$235<0.01%new13F-HRTimeline
GHP Investment Advisors, Inc.2$118<0.01%new13F-HRTimeline
Tradewinds Capital Management, LLC2$118<0.01%new13F-HRTimeline
Abound Wealth Management2$118<0.01%new13F-HRTimeline
Rialto Wealth Management, LLC2$118<0.01%new13F-HRTimeline
Dunhill Financial, LLC1$59<0.01%013F-HRTimeline
CURIO WEALTH, LLC1$59<0.01%new13F-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