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Disclosery

WDC WESTERN DIGITAL CORP

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COM (common), issuer CIK 106040

1,142 managers (1,175 13F filers) reported a position in WDC shares at 2025-12-31, 341,890,134 shares in all. 239 filers opened a position and 71 filers sold out during the quarter.

Managers
1,142
13F filers
1,175
New
239
Added
407
Reduced
360
Sold out
71
Shares held by filers
341,890,134

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

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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
CWM, LLCin group CWM, LLC102,527$17.7M0.05%+20,21813F-HRTimelineGroup
Caption Management, LLC102,200$17.6M0.78%+6,00013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC101,484$17.5M0.06%+1,41613F-HRTimeline
Melqart Asset Management (UK) Ltd99,431$17.1M1.71%-88,19113F-HRTimeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …98,062$17.1M0.01%+29,06013F-HRTimelineGroup
Parallax Volatility Advisers, L.P.97,217$16.7M0.52%+60,18613F-HRTimeline
Mediolanum International Funds Ltd95,094$16.7M0.17%+31,97113F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…74,859$16.7M0.02%+9,11213F-HRTimeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…96,743$16.7M0.13%+5,29613F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM95,602$16.5M0.09%-7,41113F-HRTimeline
NISSAY ASSET MANAGEMENT CORP /JAPAN95,175$16.4M0.09%+49,25613F-HRTimeline
Cetera Investment Advisers94,554$16.3M0.02%+21,83213F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\94,122$16.2M0.02%-62713F-HRTimelineGroup
Pacer Advisors, Inc.93,775$16.2M0.04%+28,44313F-HR/ATimeline
HIGHLAND PEAK CAPITAL, LLC93,454$16.1M6.21%-63,79813F-HRTimeline
Engineers Gate Manager LP92,344$15.9M0.19%+61,91013F-HRTimeline
Ensign Peak Advisors, Inc90,607$15.6M0.03%-20,33513F-HR/ATimeline
Czech National Bank90,154$15.5M0.1%+2,04313F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…89,997$15.5M0.03%-2,07913F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC111,481$15.4M0.05%+14,88513F-HRTimeline
Meridiem Capital Partners LP87,524$15.1M0.95%new13F-HRTimeline
Sienna Gestion85,981$15.1M0.89%013F-HRTimeline
iA Global Asset Management Inc.86,911$15M0.19%+37,96913F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.86,612$14.9M0.02%+21,57313F-HRTimelineGroup
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.86,613$14.9M0.05%+27,15613F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC85,741$14.8M0.02%+66,10713F-HRTimeline
ROBOTTI ROBERTin group ROBOTTI ROBERT84,833$14.6M2.62%-1,07213F-HR/ATimelineGroup
Zweig-DiMenna Associates LLC83,138$14.3M1.02%-5,86213F-HRTimeline
ODDO BHF ASSET MANAGEMENT SAS82,610$14.2M0.53%+39,67213F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Cavalier Investments, LLC81,980$14.1M4.39%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…81,932$14.1M0.07%-4,12913F-HRTimelineGroup
Belvedere Trading LLC81,704$14.1M2.61%+75,47213F-HRTimeline
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.81,173$14M0.1%-3,46113F-HRTimeline
Harvest Fund Management Co., Ltdin group Harvest Fund Management Co., …86,264$13.8M0.52%+66,04413F-HRTimelineGroup
Permit Capital, LLCin group Permit Capital, LLC80,000$13.8M4.29%-20,00013F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC79,810$13.7M0.35%-26,00413F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…79,528$13.7M0.07%-3,78113F-HRTimeline
CHAPIN DAVIS, INC.78,389$13.5M3.16%-2,34313F-HRTimeline
MML INVESTORS SERVICES, LLC78,261$13.5M0.03%+16,99713F-HRTimeline
FIL Ltdin group FIL Ltd76,882$13.2M0.01%-774,05813F-HRTimelineGroup
Varma Mutual Pension Insurance Co76,100$13.1M0.08%new13F-HRTimeline
Parkwood LLC74,540$12.8M1.09%new13F-HRTimeline
IFM Investors Pty Ltd72,988$12.6M0.1%+2,33713F-HRTimeline
Retirement Systems of Alabama72,734$12.5M0.04%-1,27013F-HRTimeline
KNIGHTSBRIDGE ASSET MANAGEMENT, LLC72,415$12.5M2.01%-35,29813F-HRTimeline
Bridgewater Associates, LP72,339$12.5M0.05%+20,37613F-HRTimeline
Twin Tree Management, LP70,982$12.2M1.25%-96,22013F-HRTimeline
Rakuten Group, Inc.group of 2 filers holding67,798$12.2M-60,451Timeline
GROUP ONE TRADING LLC68,783$11.8M0.35%+45,80513F-HRTimeline
MIG Capital, LLC67,406$11.6M1.97%013F-HRTimeline
AMALGAMATED BANK67,281$11.6M0.08%+1,51713F-HRTimeline
UniSuper Management Pty Ltd66,777$11.5M0.07%-10,94013F-HRTimeline
S&T Bank/PA66,592$11.5M3.63%-13,52713F-HRTimeline
MACQUARIE GROUP LTDin group MACQUARIE GROUP LTD66,491$11.5M0.05%-496,90013F-HRTimelineGroup
DNB Asset Management ASin group DNB Asset Management AS66,485$11.5M0.04%-851,97813F-HRTimelineGroup
JUPITER ASSET MANAGEMENT LTDin group JUPITER ASSET MANAGEMENT LTD66,193$11.4M0.09%new13F-HRTimelineGroup
JOHN G ULLMAN & ASSOCIATES INC64,308$11.1M1.48%-11,75013F-HRTimeline
Federation des caisses Desjardins du Qu…64,099$11M0.04%-20,75013F-HRTimeline
Focus Partners Wealthgroup of 2 filers holding63,781$11M+29,648Timeline
Corient Private Wealth LPgroup of 2 filers holding62,179$10.7M+1,409Timeline
BRITISH COLUMBIA INVESTMENT MANAGEMENT …61,561$10.6M0.06%+11,42513F-HRTimeline
FORA Capital, LLC61,385$10.6M1.28%+38,39113F-HRTimeline
Deeter Investments LLP61,314$10.6M2.28%13F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.61,138$10.5M0.12%+39,92613F-HRTimeline
Polymer Capital Management (HK) LTD60,883$10.5M1.63%-101,67913F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…60,620$10.4M0.01%+3,21413F-HRTimelineGroup
Weiss Asset Management LPin group Weiss Asset Management LP60,510$10.4M0.15%+48,42013F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
American Assets Investment Management, …in group American Assets Investment Ma…60,000$10.3M0.71%013F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.59,919$10.3M0.18%-5,27413F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A58,847$10.1M0.03%-83,14613F-HRTimelineGroup
L & S Advisors Inc56,934$9.81M0.91%-59,41113F-HRTimeline
Utah Retirement Systems56,756$9.78M0.09%-24813F-HRTimeline
XPONANCE LLC56,513$9.74M0.07%+1,38313F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…56,391$9.71M0.02%+9,61513F-HR/ATimelineGroup
Entropy Technologies, LP56,381$9.71M0.53%+5,74913F-HRTimeline
PensionDanmark Pensionsforsikringsaktie…55,593$9.58M0.09%13F-HRTimeline
Sanctuary Advisors, LLC54,939$9.46M0.05%+8,91313F-HRTimeline
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…54,466$9.38M0.08%-60013F-HRTimeline
COMERICA BANK53,608$9.24M0.04%-10,73113F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC53,016$9.13M0.04%-3,34713F-HRTimelineGroup
Banque Cantonale Vaudoisein group Banque Cantonale Vaudoise52,882$9.11M0.33%+33,15813F-HRTimelineGroup
Police & Firemen's Retirement System of…52,145$8.98M0.07%-3,64113F-HRTimeline
CIBC WORLD MARKET INC.51,887$8.94M0.02%+5,15313F-HRTimeline
Grand Alliance Asset Management Ltd51,000$8.79M6.39%+34,00013F-HRTimeline
Public Sector Pension Investment Board50,058$8.62M0.03%-243,18213F-HRTimeline
Munich Reinsurance Co Stock Corp in Mun…47,940$8.44M0.21%-43,20513F-HRTimeline
Empirical Financial Services, LLC d.b.a…48,461$8.35M0.15%-7,13013F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC37,303$8.32M0.09%-3,62013F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …43,392$8.14M0.01%+26,53113F-HRTimelineGroup
NORDEN GROUP LLC47,255$8.14M0.8%new13F-HRTimeline
New York Life Investment Management LLCin group New York Life Investment Mana…46,784$8.06M0.07%-22613F-HRTimelineGroup
GATEWAY INVESTMENT ADVISERS LLC46,776$8.06M0.07%+7013F-HRTimeline
Erste Asset Management GmbHin group Erste Asset Management GmbH42,747$7.97M0.07%+41,88213F-HRTimelineGroup
Gunderson Capital Management LLC44,801$7.72M3.48%new13F-HRTimeline
SHELTON CAPITAL MANAGEMENT43,889$7.56M0.15%+41,97313F-HRTimeline
Summit Trail Advisors, LLC43,701$7.53M0.13%-8,51813F-HRTimeline
State of Alaska, Department of Revenue43,539$7.5M0.08%-3,25513F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC43,124$7.43M0.06%+34,11613F-HRTimeline
Elo Mutual Pension Insurance Co41,896$7.22M0.11%+2,54613F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC41,797$7.2M0.09%-59,27013F-HRTimelineGroup
Cambridge Investment Research Advisors,…41,497$7.15M0.02%+27,54713F-HRTimeline
PINNBROOK CAPITAL MANAGEMENT LP41,323$7.12M1.84%-27,97013F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC40,917$7.05M0.52%+8,46613F-HRTimeline
Louisiana State Employees Retirement Sy…40,400$6.96M0.12%+22,20013F-HRTimeline
NewEdge Advisors, LLC40,379$6.96M0.03%+21,84113F-HRTimeline
CSS LLC/IL39,823$6.86M0.39%+1,07013F-HRTimeline
Greenwich Wealth Management LLC39,532$6.81M0.3%-11213F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND39,167$6.75M0.09%-50013F-HRTimeline
PANAGORA ASSET MANAGEMENT INC38,474$6.63M0.02%new13F-HRTimeline
Arkadios Wealth Advisors38,319$6.6M0.13%-14213F-HRTimeline
ASR Vermogensbeheer N.V.38,242$6.59M0.08%+7,27913F-HRTimeline
OP Asset Management Ltd37,747$6.5M0.08%+1,25613F-HR/ATimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC37,407$6.44M0.01%-875,52913F-HRTimelineGroup
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP37,012$6.38M0.01%-4,05313F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…36,708$6.32M0.07%-89213F-HRTimelineGroup
OpenArc Corporate Advisory, LLC36,179$6.23M0.1%13F-HRTimeline
WEDBUSH SECURITIES INC35,944$6.19M0.18%+4,65913F-HRTimeline
Assenagon Asset Management S.A.35,900$6.18M0.01%-24,52313F-HRTimeline
HighTower Advisors, LLC35,293$6.08M0.01%+10,70013F-HRTimeline
SteelPeak Wealth, LLC35,065$6.04M0.2%+33,18013F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson35,045$6.04M<0.01%-4,42413F-HRTimelineGroup
BANK OF HAWAII34,651$5.97M0.29%-10,50313F-HRTimeline
Composition Wealth, LLC34,426$5.93M0.09%+19113F-HRTimeline
Ethic Inc.34,426$5.93M0.09%-60113F-HRTimeline
Clearline Capital LP34,215$5.89M0.44%013F-HRTimeline
Lombard Odier Asset Management (Switzer…34,129$5.88M0.25%-7,34313F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…34,079$5.87M0.02%013F-HRTimeline
HighPoint Advisor Group LLC33,696$5.8M0.13%+26,27613F-HRTimeline
Wealthfront Advisers LLC33,346$5.74M0.01%+6,82413F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…33,031$5.69M0.38%-38,05813F-HRTimelineGroup
B. Metzler seel. Sohn & Co. AGin group B. Metzler seel. Sohn & Co. AG32,836$5.66M0.05%-23,35113F-HRTimelineGroup
Caprock Group, LLC32,691$5.63M0.12%+10,92113F-HRTimeline
CAPTRUST FINANCIAL ADVISORS32,637$5.62M0.01%+5,23913F-HRTimeline
PROFUND ADVISORS LLC32,109$5.53M0.17%+26,18713F-HRTimeline
Cinctive Capital Management LP32,099$5.53M0.32%-7,25613F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC31,482$5.42M0.02%+5,67713F-HRTimelineGroup
Norinchukin Bank, Thein group Norinchukin Bank, The31,436$5.42M0.06%+12,39013F-HRTimelineGroup
NewEdge Wealth, LLC31,397$5.41M0.06%+16,52613F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…31,193$5.37M<0.01%+1,40413F-HRTimelineGroup
Dana Investment Advisors, Inc.31,120$5.36M0.16%-2,44613F-HRTimeline
Kentucky Retirement Systemsgroup of 2 filers holding30,840$5.31M0Timeline
SORA INVESTORS LLC30,349$5.23M0.45%-41,61013F-HRTimeline
Lansforsakringar Fondforvaltning AB (pu…30,075$5.18M0.03%-2,00013F-HRTimeline
KINGDON CAPITAL MANAGEMENT, L.L.C.30,000$5.17M0.79%-30,00013F-HRTimeline
RITHOLTZ WEALTH MANAGEMENT29,916$5.15M0.09%+23,53913F-HRTimeline
PATTON FUND MANAGEMENT, INC.29,828$5.14M0.69%+26,99813F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC38,400$5.06M0.02%+3,09113F-HRTimelineGroup
Investment Management Corp of Ontario29,268$5.04M0.07%+12,87613F-HRTimeline
HBK INVESTMENTS L P28,747$4.95M0.05%-213F-HRTimeline
Sterling Capital Management LLC28,662$4.94M0.08%+7,13613F-HRTimeline
Merit Financial Group, LLC28,139$4.85M0.04%+9,75113F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding27,644$4.76M+11,402Timeline
Advisory Services Network, LLC27,541$4.74M0.07%+9,06513F-HRTimeline
Kestra Advisory Services, LLCgroup of 2 filers holding27,365$4.71M+6,870Timeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…27,100$4.67M0.03%013F-HRTimeline
Callan Family Office, LLC26,826$4.62M0.1%+14,62313F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…26,593$4.58M0.11%+5,99313F-HRTimelineGroup
ALLSTATE CORPin group ALLSTATE CORP26,460$4.56M0.06%+13,31713F-HRTimelineGroup
Orion Porfolio Solutions, LLC26,368$4.54M0.03%+18,99913F-HRTimeline
ZACKS INVESTMENT MANAGEMENT26,190$4.51M0.04%+1,12613F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.26,073$4.49M0.01%+13,15313F-HRTimelineGroup
Estate Counselors, LLC25,587$4.41M0.37%-23413F-HRTimeline
Prospera Financial Services Inc25,575$4.41M0.07%-13,00413F-HRTimeline
Meeder Advisory Services, Inc.group of 2 filers holding25,299$4.36M+15,571Timeline
Qsemble Capital Management, LP25,086$4.32M0.36%-76,61713F-HRTimeline
PINKERTON WEALTH, LLC24,799$4.27M0.44%-17,20313F-HRTimeline
SHARPEPOINT LLC24,612$4.24M2.54%new13F-HRTimeline
Greenland Capital Management LP24,598$4.24M0.61%new13F-HRTimeline
Janney Montgomery Scott LLC24,297$4.19M0.01%+1,06213F-HRTimeline
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC24,895$4.07M0.07%-37313F-HRTimelineGroup
Farther Finance Advisors, LLC23,478$4.04M0.04%+5,36213F-HRTimeline
TORTOISE CAPITAL ADVISORS, L.L.C.23,116$3.98M0.05%+19,79013F-HRTimeline
FIFTH THIRD BANK, NATIONAL ASSOCIATIONgroup of 2 filers holding22,950$3.95M-959Timeline
Attestor Capital Ltdin group Attestor Capital Ltd22,067$3.8M1.8%13F-HRTimelineGroup
Edgestream Partners, L.P.21,940$3.78M0.11%-15,62813F-HRTimeline
OMERS ADMINISTRATION Corp21,795$3.75M0.03%-15,00013F-HRTimeline
Collar Capital Management, LLC21,698$3.74M2.5%-4,26913F-HRTimeline
Horizon Investments, LLC21,695$3.74M0.05%+12,65713F-HRTimeline
TTP Investments, Inc.21,539$3.71M1.21%-10,96113F-HRTimeline
Ardmore Road Asset Management LP20,850$3.59M0.27%new13F-HRTimeline
Blackstone Inc.in group Blackstone Inc.20,605$3.55M0.01%new13F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
Parkway Wealth Management Group, LLC20,496$3.53M0.47%13F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.group of 2 filers holding20,152$3.47M-3,670Timeline
Bleakley Financial Group, LLC20,145$3.47M0.06%new13F-HRTimeline
Atlatl Advisers LLC19,946$3.44M1.32%+53213F-HRTimeline
HARTFORD INVESTMENT MANAGEMENT CO19,759$3.4M0.1%-59313F-HRTimeline
Williamson Legacy Group, LLC19,671$3.39M2.65%new13F-HRTimeline
Decker Retirement Planning Inc.19,653$3.39M1.68%-7,62013F-HRTimeline
Pallas Capital Advisors LLC19,595$3.38M0.11%+1,80513F-HRTimeline
Avanza Fonder AB19,491$3.36M0.09%013F-HRTimeline
Global Retirement Partners, LLC19,204$3.31M0.06%+17,79913F-HRTimeline
North Dakota State Investment Board19,019$3.28M0.12%13F-HRTimeline
BLAIR WILLIAM & CO/IL18,919$3.26M0.01%-21813F-HRTimeline
Dorsey Wright & Associates18,842$3.25M0.7%new13F-HRTimeline
III Capital Management18,506$3.19M0.71%-23,20713F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding18,399$3.17M+15,090Timeline
1832 Asset Management L.P.18,242$3.14M<0.01%-18,73013F-HRTimeline
INDEPENDENT FINANCIAL GROUP, LLC18,221$3.14M0.07%+9,78113F-HRTimeline
M&T Bank Corpin group M&T Bank Corp18,080$3.11M0.01%+3,98913F-HR/ATimelineGroup
J. Goldman & Co LP18,000$3.1M0.12%new13F-HRTimeline