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Disclosery

WDC WESTERN DIGITAL CORP

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COM (common), issuer CIK 106040

935 managers (962 13F filers) reported a position in WDC shares at 2025-09-30, 345,934,015 shares in all. 277 filers opened a position and 67 filers sold out during the quarter.

Managers
935
13F filers
962
New
277
Added
353
Reduced
236
Sold out
67
Shares held by filers
345,934,015

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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
KNIGHTSBRIDGE ASSET MANAGEMENT, LLC107,713$12.9M2.19%-3,76613F-HRTimeline
Trexquant Investment LP107,328$12.9M0.13%+60,24213F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC105,814$12.7M0.32%-40,96013F-HRTimeline
ASSETMARK, INCin group ASSETMARK, INC105,373$12.7M0.03%+2,94313F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM103,013$12.4M0.07%+1,98813F-HRTimeline
Concentric Capital Strategies, LP101,834$12.2M0.58%new13F-HRTimeline
Qsemble Capital Management, LP101,703$12.2M1.2%+86,29013F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC101,067$12.1M0.15%new13F-HR/ATimelineGroup
NISA INVESTMENT ADVISORS, LLC100,068$12M0.05%+11,95313F-HRTimeline
Permit Capital, LLCin group Permit Capital, LLC100,000$12M3.76%-13,05013F-HRTimelineGroup
SeaTown Holdings Pte. Ltd.in group Temasek Holdings (Private) Ltd100,000$12M6.92%new13F-HRTimelineGroup
Handelsbanken Fonder AB99,800$12M0.04%+13,30013F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC96,596$11.6M0.04%new13F-HRTimeline
PDT Partners, LLC96,400$11.6M0.73%new13F-HRTimeline
Caption Management, LLC96,200$11.5M0.67%new13F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\94,749$11.4M0.01%+21,57213F-HRTimelineGroup
Man Group plcin group Man Group plc94,202$11.3M0.02%new13F-HRTimelineGroup
Caisse de depot et placement du Quebec93,786$11.3M0.02%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…92,076$11.1M0.03%-3,30113F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding91,681$11M-60,839Timeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…91,447$11M0.09%+19,08213F-HRTimelineGroup
Munich Reinsurance Co Stock Corp in Mun…91,145$10.9M0.27%13F-HRTimeline
ProShare Advisors LLC90,702$10.9M0.02%-5,98813F-HRTimeline
Vinva Investment Management Ltd91,590$10.7M0.21%+80,65413F-HRTimeline
Zweig-DiMenna Associates LLC89,000$10.7M0.83%new13F-HRTimeline
Czech National Bank88,111$10.6M0.07%+2,83313F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…86,061$10.3M0.05%-2,78613F-HRTimelineGroup
ROBOTTI ROBERTin group ROBOTTI ROBERT85,905$10.3M1.79%-49013F-HRTimelineGroup
Federation des caisses Desjardins du Qu…84,849$10.2M0.04%+38,76213F-HRTimeline
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.84,634$10.1M0.08%+11,33013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…83,309$10M0.05%-2,25513F-HRTimeline
CWM, LLCin group CWM, LLC82,309$9.88M0.03%+27,38613F-HRTimelineGroup
CHAPIN DAVIS, INC.80,732$9.69M2.38%new13F-HRTimeline
S&T Bank/PA80,119$9.62M2.7%-17,74413F-HRTimeline
Creative Planningin group Creative Planning79,542$9.55M0.01%+17,26313F-HRTimelineGroup
Sienna Gestion85,981$9.41M0.66%new13F-HRTimeline
UniSuper Management Pty Ltd77,717$9.33M0.06%-9,47113F-HRTimeline
Arax Advisory Partners76,894$9.23M0.13%+75,70013F-HRTimeline
Achmea Investment Management B.V.in group Achmea Investment Management …76,371$9.17M0.11%+11,62513F-HRTimelineGroup
JOHN G ULLMAN & ASSOCIATES INC76,058$9.13M1.23%-16,48513F-HRTimeline
Mariner, LLCin group Mariner, LLC75,989$9.12M0.01%+21,94113F-HRTimelineGroup
Retirement Systems of Alabama74,004$8.88M0.03%-85813F-HRTimeline
Sound Income Strategies, LLC73,546$8.8M0.48%-12,91613F-HRTimeline
Cetera Investment Advisers72,722$8.73M0.01%+27,61013F-HRTimeline
SORA INVESTORS LLC71,959$8.64M0.8%new13F-HRTimeline
ING GROEP NV71,849$8.63M0.05%-34,85713F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…71,089$8.53M0.54%+28,07813F-HRTimelineGroup
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …69,002$8.35M0.01%+38,56813F-HRTimelineGroup
PINNBROOK CAPITAL MANAGEMENT LP69,293$8.32M1.54%new13F-HRTimeline
MIG Capital, LLC67,406$8.09M1.19%+15,86713F-HRTimeline
AMALGAMATED BANK65,764$7.9M0.06%-1,54113F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…65,747$7.88M0.01%+9,68913F-HRTimeline
Pacer Advisors, Inc.65,332$7.84M0.02%-1,315,16813F-HRTimeline
GF FUND MANAGEMENT CO. LTD.65,193$7.83M0.14%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…64,773$7.78M0.11%-15,99013F-HRTimelineGroup
COMERICA BANK64,339$7.72M0.03%-76,12213F-HRTimeline
IFM Investors Pty Ltd70,651$7.55M0.07%+7,51813F-HRTimeline
Mediolanum International Funds Ltd63,123$7.37M0.08%new13F-HRTimeline
MML INVESTORS SERVICES, LLC61,264$7.36M0.02%+36,54613F-HRTimeline
Corient Private Wealth LPgroup of 2 filers holding60,770$7.3M+11,212Timeline
Assenagon Asset Management S.A.60,423$7.25M0.01%-10,64713F-HRTimeline
KINGDON CAPITAL MANAGEMENT, L.L.C.60,000$7.2M1.13%-70,00013F-HRTimeline
American Assets Investment Management, …in group American Assets Investment Ma…60,000$7.2M0.53%013F-HRTimelineGroup
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.59,457$7.14M0.02%+1,92513F-HRTimelineGroup
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…58,990$7.08M0.06%+39,47913F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS57,888$6.95M0.03%+5,38613F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…57,406$6.89M<0.01%+2,70913F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC57,093$6.85M0.01%+56,38813F-HRTimelineGroup
Utah Retirement Systems57,004$6.84M0.07%013F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC56,730$6.81M0.04%+32,31413F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.65,039$6.78M0.01%+42,57913F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC56,363$6.77M0.03%+11,21113F-HRTimelineGroup
B. Metzler seel. Sohn & Co. AGin group B. Metzler seel. Sohn & Co. AG56,187$6.75M0.06%+22,20913F-HRTimelineGroup
ALERUS FINANCIAL NA55,955$6.72M0.34%-13,48513F-HRTimeline
Police & Firemen's Retirement System of…55,786$6.7M0.05%+3,11513F-HRTimeline
Empirical Financial Services, LLC d.b.a…55,591$6.67M0.13%new13F-HRTimeline
AXA Investment Managers S.A.55,330$6.64M0.02%13F-HRTimeline
XPONANCE LLC55,130$6.62M0.05%-3,45413F-HRTimeline
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…55,066$6.61M0.06%+2,90013F-HRTimeline
COBALT CAPITAL MANAGEMENT, INC.in group COBALT CAPITAL MANAGEMENT, IN…55,000$6.6M3.03%-105,00013F-HRTimelineGroup
Summit Trail Advisors, LLC52,219$6.27M0.09%+7,04913F-HRTimeline
Bridgewater Associates, LP51,963$6.24M0.02%new13F-HRTimeline
Lombard Odier Asset Management (Switzer…41,472$6.16M0.28%+21,97313F-HRTimeline
Oak Thistle LLC50,736$6.09M0.93%+18,65413F-HRTimeline
Entropy Technologies, LP50,632$6.08M0.45%+2313F-HRTimeline
BRITISH COLUMBIA INVESTMENT MANAGEMENT …50,136$6.02M0.03%-4,25213F-HRTimeline
iA Global Asset Management Inc.48,942$5.88M0.08%new13F-HRTimeline
WOLVERINE TRADING, LLC49,930$5.83M0.12%new13F-HRTimeline
CIBC Asset Management Inc47,566$5.71M0.02%+11613F-HRTimeline
New York Life Investment Management LLCin group New York Life Investment Mana…47,010$5.64M0.05%-1,01413F-HRTimelineGroup
State of Alaska, Department of Revenue46,794$5.62M0.06%-2,41813F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…46,776$5.62M0.01%-4,55013F-HRTimelineGroup
CIBC WORLD MARKET INC.46,734$5.61M0.01%+2,74613F-HRTimeline
GATEWAY INVESTMENT ADVISERS LLC46,706$5.61M0.05%-56,00013F-HRTimeline
Sanctuary Advisors, LLC46,026$5.53M0.03%+12,19413F-HR/ATimeline
NISSAY ASSET MANAGEMENT CORP /JAPAN45,919$5.51M0.03%+1,13913F-HRTimeline
BANK OF HAWAII45,154$5.42M0.27%new13F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.44,903$5.39M0.05%new13F-HRTimelineGroup
DeepCurrents Investment Group LLC43,116$5.18M0.17%-142,37513F-HRTimeline
ODDO BHF ASSET MANAGEMENT SAS42,938$5.16M0.2%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Kerrisdale Advisers, LLC42,454$5.1M2.64%-31,12313F-HRTimeline
PINKERTON WEALTH, LLC42,002$5.04M0.54%new13F-HRTimeline
III Capital Management41,713$5.01M1.21%-41,18713F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP41,065$4.93M0.01%+29,66713F-HRTimelineGroup
YOUSIF CAPITAL MANAGEMENT, LLC40,923$4.91M0.05%-4,19213F-HRTimeline
Alight Capital Management LP40,000$4.8M1.15%new13F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND39,667$4.76M0.06%+9,43013F-HRTimeline
Greenwich Wealth Management LLC39,644$4.76M0.24%-59513F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson39,469$4.74M<0.01%-30013F-HRTimelineGroup
Cinctive Capital Management LP39,355$4.72M0.24%-108,43513F-HRTimeline
Elo Mutual Pension Insurance Co39,350$4.72M0.08%+28,84313F-HRTimeline
NEOS Investment Management LLC38,831$4.66M0.03%+13,23813F-HRTimeline
CSS LLC/IL38,753$4.65M0.28%+25,27313F-HRTimeline
Prospera Financial Services Inc38,579$4.63M0.08%+5,84913F-HRTimeline
Arkadios Wealth Advisors38,461$4.62M0.11%+11,79413F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…37,600$4.51M0.05%-2,40413F-HRTimelineGroup
Edgestream Partners, L.P.37,568$4.51M0.13%new13F-HRTimeline
Tredje AP-fonden37,110$4.46M0.04%+11,84813F-HRTimeline
Inspire Investing, LLCgroup of 2 filers holding37,062$4.45MnewTimeline
Parallax Volatility Advisers, L.P.37,031$4.45M0.13%-47,97113F-HRTimeline
1832 Asset Management L.P.36,972$4.44M0.01%new13F-HRTimeline
OMERS ADMINISTRATION Corp36,795$4.42M0.03%-9,00013F-HRTimeline
Rakuten Group, Inc.group of 2 filers holding128,249$4.42M+127,832Timeline
Focus Partners Wealthgroup of 2 filers holding34,133$4.4M+7,152Timeline
OP Asset Management Ltd36,491$4.38M0.06%+1,53913F-HR/ATimeline
TTP Investments, Inc.32,500$4.27M1.24%new13F-HRTimeline
Night Squared LP35,424$4.25M1.53%new13F-HRTimeline
Lido Advisors, LLCin group Lido Advisors, LLC35,309$4.24M0.02%+24,03113F-HRTimelineGroup
Ethic Inc.35,027$4.21M0.07%+2,23913F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC34,566$4.15M0.03%+14,92913F-HRTimelineGroup
Composition Wealth, LLC34,235$4.11M0.06%-3313F-HRTimeline
Clearline Capital LP34,215$4.11M0.35%-21,35113F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…34,079$4.09M0.02%-14813F-HRTimeline
Dana Investment Advisors, Inc.33,566$4.03M0.12%-1,01113F-HRTimeline
Central Asset Investments & Management …33,428$4.01M2.76%+10,38813F-HRTimeline
CANTOR FITZGERALD, L. P.in group CANTOR FITZGERALD, L. P.32,487$3.9M0.08%+25,98713F-HR/ATimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC32,451$3.9M0.31%-14,29313F-HRTimeline
Lansforsakringar Fondforvaltning AB (pu…32,075$3.85M0.02%-5,06613F-HRTimeline
J. Safra Sarasin Holding AGin group J. Safra Sarasin Holding AG31,302$3.76M0.06%+22,02213F-HRTimelineGroup
WEDBUSH SECURITIES INC31,285$3.76M0.12%-2,02213F-HRTimeline
Soviero Asset Management, LP31,000$3.72M2.3%-40,00013F-HRTimeline
ASR Vermogensbeheer N.V.30,963$3.72M0.05%-7813F-HRTimeline
Kentucky Retirement Systemsgroup of 2 filers holding30,840$3.7M-690Timeline
Engineers Gate Manager LP30,434$3.65M0.04%-10,39913F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC30,162$3.62M0.03%+5,00113F-HRTimelineGroup
ARDSLEY ADVISORY PARTNERS LP30,000$3.6M0.55%new13F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…29,789$3.58M<0.01%-1,13913F-HRTimelineGroup
AIA Group Ltdin group AIA Group Ltd29,265$3.51M0.06%+14,16513F-HRTimelineGroup
Quantbot Technologies LP28,869$3.47M0.09%new13F-HRTimeline
Volterra Technologies LP28,855$3.46M2.3%new13F-HRTimeline
HBK INVESTMENTS L P28,749$3.45M0.05%+2,70813F-HRTimeline
CAPTRUST FINANCIAL ADVISORS27,398$3.29M0.01%+2,65713F-HRTimeline
Decker Retirement Planning Inc.27,273$3.27M1.8%new13F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…27,100$3.25M0.02%013F-HRTimeline
Wealthfront Advisers LLC26,522$3.18M0.01%+10,20013F-HRTimeline
Collar Capital Management, LLC25,967$3.12M2.19%-3,68813F-HRTimeline
Estate Counselors, LLC25,821$3.1M0.27%new13F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC25,805$3.1M0.01%+5,55513F-HRTimelineGroup
ZACKS INVESTMENT MANAGEMENT25,064$3.01M0.02%new13F-HRTimeline
HighTower Advisors, LLC24,593$2.95M<0.01%-16,92513F-HRTimeline
Banco BTG Pactual S.A.24,105$2.89M0.42%new13F-HRTimeline
FIFTH THIRD BANK, NATIONAL ASSOCIATIONgroup of 2 filers holding23,909$2.87M+2,808Timeline
OPPENHEIMER ASSET MANAGEMENT INC.group of 2 filers holding23,822$2.86M+18,419Timeline
Generali Asset Management SPA SGR23,720$2.85M0.06%-9,89513F-HRTimeline
Janney Montgomery Scott LLC23,235$2.79M0.01%-3,67013F-HRTimeline
FORA Capital, LLC22,994$2.76M0.49%new13F-HRTimeline
GROUP ONE TRADING LLC22,978$2.76M0.08%-40,17313F-HRTimeline
Donoghue Forlines LLC22,851$2.74M0.85%new13F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP22,395$2.69M0.1%new13F-HR/ATimeline
Clear Harbor Asset Management, LLC21,750$2.61M0.18%-1,72813F-HR/ATimeline
Sterling Capital Management LLC21,526$2.58M0.04%-58,42713F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd21,391$2.57M0.1%-127,54713F-HRTimelineGroup
Machina Capital S.A.S.21,387$2.57M0.45%new13F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.21,212$2.55M0.03%+16,74713F-HRTimeline
LECAP ASSET MANAGEMENT LTD20,674$2.48M0.86%+14,53113F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…20,600$2.47M0.07%+6,59513F-HRTimelineGroup
Kestra Advisory Services, LLCgroup of 2 filers holding20,495$2.46M+2,027Timeline
HARTFORD INVESTMENT MANAGEMENT CO20,352$2.44M0.07%-67213F-HRTimeline
Metis Global Partners, LLC20,227$2.43M0.06%+23513F-HRTimeline
Harvest Fund Management Co., Ltdin group Harvest Fund Management Co., …20,220$2.43M0.1%+11,27713F-HRTimelineGroup
SPX Gestao de Recursos Ltdain group SPX Gestao de Recursos Ltda20,000$2.4M0.2%new13F-HRTimelineGroup
Counterpoint Mutual Funds LLC19,895$2.39M0.19%new13F-HRTimeline
ROMANO BROTHERS AND COMPANY19,882$2.39M0.27%-25013F-HRTimeline
NewEdge Wealth, LLC14,871$2.38M0.03%-1,11013F-HRTimeline
Penserra Capital Management LLCin group Penserra Capital Management L…19,809$2.38M0.03%+3,73013F-HRTimelineGroup
Banque Cantonale Vaudoisein group Banque Cantonale Vaudoise19,724$2.37M0.09%-7,06413F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC19,634$2.36M<0.01%+8,05513F-HRTimeline
Avanza Fonder AB19,491$2.34M0.06%-5,76713F-HRTimeline
Lifestyle Asset Management, Inc.19,439$2.33M0.8%-1,37313F-HRTimeline
Atlatl Advisers LLC19,414$2.33M0.93%new13F-HRTimeline
BLAIR WILLIAM & CO/IL19,137$2.3M0.01%-26513F-HRTimeline
Norinchukin Bank, Thein group Norinchukin Bank, The19,046$2.29M0.03%+1,19813F-HRTimelineGroup
FNY Investment Advisers, LLC18,605$2.23M0.72%+17,93713F-HRTimeline
NewEdge Advisors, LLC18,538$2.23M0.01%+8,34413F-HRTimeline
Advisory Services Network, LLC18,476$2.22M0.03%+10,34813F-HRTimeline
Merit Financial Group, LLC18,388$2.21M0.02%+7,40413F-HR/ATimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …16,861$2.2M<0.01%-40513F-HRTimelineGroup
Louisiana State Employees Retirement Sy…18,200$2.19M0.04%-20013F-HRTimeline
Ancora Advisors LLCin group Ancora Advisors LLC18,196$2.18M0.04%-44013F-HRTimelineGroup
Richard Bernstein Advisors LLC18,160$2.18M0.06%-21,13113F-HRTimeline