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Disclosery

WDC WESTERN DIGITAL CORP

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COM (common), issuer CIK 106040

1,378 managers (1,422 13F filers) reported a position in WDC shares at 2026-03-31, 334,822,214 shares in all. 336 filers opened a position and 103 filers sold out during the quarter.

Managers
1,378
13F filers
1,422
New
336
Added
450
Reduced
491
Sold out
103
Shares held by filers
334,822,214

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, 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
NewEdge Advisors, LLC99,548$26.9M0.1%+59,16913F-HR/ATimeline
Zurcher Kantonalbank (Zurich Cantonalba…97,488$26.4M0.06%+7,49113F-HRTimeline
NISSAY ASSET MANAGEMENT CORP /JAPAN97,121$26.3M0.14%+1,94613F-HRTimeline
Nationale-Nederlanden Powszechne Towarz…96,947$26.2M2.22%-130,37813F-HRTimeline
PANAGORA ASSET MANAGEMENT INC96,741$26.2M0.1%+58,26713F-HRTimeline
SEB Asset Management AB95,487$25.8M0.11%13F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…94,398$25.6M0.06%+19,53913F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\93,840$25.4M0.03%-28213F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM93,674$25.3M0.15%-1,92813F-HRTimeline
Czech National Bank92,336$25M0.16%+2,18213F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC90,848$24.6M0.08%+37,83213F-HRTimelineGroup
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.90,560$24.5M0.07%+3,94713F-HRTimelineGroup
UNICOM Systems, Inc.90,500$24.5M2.51%new13F-HRTimeline
Swiss Life Asset Management Ltdin group Swiss Life Asset Management L…89,969$24.3M0.12%-36,57113F-HRTimelineGroup
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC89,468$24.2M0.19%-18,96113F-HRTimelineGroup
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…89,416$24.2M0.13%+34,95013F-HRTimeline
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.88,462$23.8M0.17%+7,28913F-HRTimeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…87,304$23.6M0.19%-9,43913F-HRTimelineGroup
LOOMIS SAYLES & CO L Pin group LOOMIS SAYLES & CO L P87,059$23.5M0.03%-78,67013F-HRTimelineGroup
MML INVESTORS SERVICES, LLC85,314$23.1M0.06%+7,05313F-HRTimeline
Temasek Holdings (Private) Ltdin group Temasek Holdings (Private) Ltd83,092$22.5M0.08%new13F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC82,694$22.4M0.04%-178,90113F-HRTimelineGroup
Andra AP-fonden81,737$22.1M0.26%-178,66313F-HRTimeline
Man Group plcin group Man Group plc81,619$22.1M0.05%-96,78513F-HRTimelineGroup
Pacer Advisors, Inc.80,861$21.9M0.06%-12,91413F-HR/ATimeline
LBP AM SA80,109$21.7M0.3%+74,77413F-HRTimeline
iA Global Asset Management Inc.79,576$21.5M0.3%-7,33513F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…79,241$21.4M0.11%-2,69113F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…78,976$21.4M0.11%-55213F-HRTimeline
Mediolanum International Funds Ltd83,123$20.9M0.22%-11,97113F-HRTimeline
Varma Mutual Pension Insurance Co76,100$20.6M0.12%013F-HR/ATimeline
FIFTH THIRD BANK, NATIONAL ASSOCIATIONgroup of 2 filers holding76,081$20.6M+53,131Timeline
IMC-Chicago, LLC75,502$20.4M0.31%new13F-HRTimeline
Park West Asset Management LLC75,027$20.3M1.79%-36,50013F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS73,714$19.9M0.07%+7,22913F-HRTimelineGroup
Central Asset Investments & Management …73,560$19.9M18.5%-60,18813F-HRTimeline
PensionDanmark Pensionsforsikringsaktie…73,024$19.8M0.19%+17,43113F-HRTimeline
IFM Investors Pty Ltd72,760$19.7M0.16%-22813F-HRTimeline
Retirement Systems of Alabama71,998$19.5M0.06%-73613F-HRTimeline
Public Sector Pension Investment Board70,288$19M0.06%+20,23013F-HRTimeline
B. Metzler seel. Sohn & Co. AGin group B. Metzler seel. Sohn & Co. AG70,075$19M0.18%+37,23913F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.70,065$19M0.32%+10,14613F-HRTimeline
AMALGAMATED BANK68,989$18.7M0.14%+1,70813F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…68,962$18.7M0.01%+8,34213F-HRTimelineGroup
LGT Fund Management Co Ltd.68,870$18.6M0.81%+52,67013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.68,556$18.5M0.03%-18,05613F-HRTimelineGroup
Parallax Volatility Advisers, L.P.68,462$18.5M0.82%-28,75513F-HRTimeline
Rakuten Group, Inc.group of 2 filers holding73,280$18.5M+5,482Timeline
Engineers Gate Manager LP68,069$18.4M0.23%-24,27513F-HRTimeline
Ilmarinen Mutual Pension Insurance Co66,775$18.1M0.14%new13F-HRTimeline
Corient Private Wealth LPgroup of 2 filers holding67,385$17.9M+5,206Timeline
OFI INVEST ASSET MANAGEMENT75,454$17.8M0.24%-62,17713F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.65,785$17.8M0.18%+4,64713F-HRTimeline
Harvest Fund Management Co., Ltdin group Harvest Fund Management Co., …65,586$17.7M0.75%-20,67813F-HRTimelineGroup
State of Alaska, Department of Revenue64,999$17.6M0.19%+21,46013F-HRTimeline
Melqart Asset Management (UK) Ltd64,216$17.4M1.71%-35,21513F-HRTimeline
XPONANCE LLC63,879$17.3M0.12%+7,36613F-HRTimeline
Sienna Gestion67,254$17.1M1.11%-18,72713F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC61,407$16.6M0.14%+50,01513F-HRTimelineGroup
CHAPIN DAVIS, INC.61,041$16.5M3.68%-17,34813F-HRTimeline
American Assets Investment Management, …in group American Assets Investment Ma…60,000$16.2M1.1%013F-HRTimelineGroup
Tyro Capital Management LLC59,548$16.1M4.08%new13F-HR/ATimeline
UniSuper Management Pty Ltd59,251$16M0.1%-7,52613F-HRTimeline
Investment Management Corp of Ontario59,201$16M0.21%+29,93313F-HRTimeline
CREDIT AGRICOLE S Ain group CREDIT AGRICOLE S A58,681$15.9M0.05%-16613F-HRTimelineGroup
ODDO BHF ASSET MANAGEMENT SAS58,195$15.7M0.62%-24,41513F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Prospera Financial Services Inc56,710$15.3M0.25%+31,13513F-HRTimeline
TUDOR INVESTMENT CORP ET AL55,793$15.1M0.08%+53,84213F-HRTimeline
Entropy Technologies, LP55,665$15.1M0.69%-71613F-HRTimeline
Utah Retirement Systems55,294$15M0.15%-1,46213F-HRTimeline
Sanctuary Advisors, LLC53,854$14.6M0.08%-1,08513F-HRTimeline
Attestor Capital Ltdin group Attestor Capital Ltd52,927$14.3M3.77%+30,86013F-HRTimelineGroup
Maytus Capital Management, LLC52,501$14.2M2.53%-70,49913F-HRTimeline
Vinva Investment Management Ltd56,204$14.1M0.18%-142,52413F-HRTimeline
Police & Firemen's Retirement System of…52,243$14.1M0.12%+9813F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …47,202$14.1M0.02%+3,81013F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson51,727$14M0.01%+16,68213F-HR/ATimelineGroup
ELEVATION POINT WEALTH PARTNERS, LLC51,393$13.9M0.33%+49,55013F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…51,233$13.9M0.02%-5,15813F-HRTimelineGroup
EXCHANGE TRADED CONCEPTS, LLC51,150$13.8M0.11%+8,02613F-HRTimeline
Calamos Advisors LLCgroup of 2 filers holding51,034$13.8M+49,763Timeline
New York Life Investment Management LLCin group New York Life Investment Mana…50,802$13.7M0.12%+4,01813F-HRTimelineGroup
Federation des caisses Desjardins du Qu…49,790$13.5M0.05%-14,30913F-HRTimeline
Ethic Inc.49,359$13.4M0.21%+14,93313F-HRTimeline
S&T Bank/PA48,501$13.1M4.9%-18,09113F-HRTimeline
PEAK6 LLCin group PEAK6 LLC48,116$13M0.38%new13F-HRTimelineGroup
Rheos Capital Works Inc.48,000$13M0.87%-82,00013F-HRTimeline
RITHOLTZ WEALTH MANAGEMENT47,387$12.8M0.22%+17,47113F-HRTimeline
BRITISH COLUMBIA INVESTMENT MANAGEMENT …47,122$12.7M0.08%-14,43913F-HRTimeline
HighTower Advisors, LLC47,036$12.7M0.01%+11,74313F-HRTimeline
Summit Trail Advisors, LLC47,018$12.7M0.18%+3,31713F-HRTimeline
ROBOTTI ROBERTin group ROBOTTI ROBERT46,544$12.6M1.96%-38,28913F-HRTimelineGroup
Wealthfront Advisers LLC45,852$12.4M0.03%+12,50613F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…45,849$12.4M0.05%+11,77013F-HRTimeline
Capital International Investorsgroup of 2 filers holding45,275$12.2MnewTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP45,177$12.2M0.02%+8,16513F-HRTimelineGroup
VIRGINIA RETIREMENT SYSTEMS ET Al45,094$12.2M0.09%-251,60013F-HRTimeline
Empirical Financial Services, LLC d.b.a…44,864$12.1M0.21%-3,59713F-HRTimeline
MACQUARIE GROUP LTDin group MACQUARIE GROUP LTD44,830$12.1M0.07%-21,66113F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd44,678$12.1M0.21%+31,88113F-HRTimelineGroup
Banco Santander, S.A.in group Banco Santander, S.A.44,628$12.1M0.1%+37,20813F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC44,454$12M0.28%-35,35613F-HRTimeline
Vestmark Advisory Solutions, Inc.44,087$11.9M0.13%+38,54513F-HRTimeline
Mubadala Investment Co PJSC43,980$11.9M0.06%new13F-HRTimeline
PINEBRIDGE INVESTMENTS LLC43,035$11.6M0.1%-77,09113F-HRTimeline
SHELTON CAPITAL MANAGEMENT42,349$11.5M0.25%-1,54013F-HRTimeline
ExodusPoint Capital Management, LP42,277$11.4M0.11%new13F-HRTimeline
Parkwood LLC41,818$11.3M1%-32,72213F-HRTimeline
Lansforsakringar Fondforvaltning AB (pu…41,491$11.2M0.06%+11,41613F-HRTimeline
WEDBUSH SECURITIES INC41,481$11.2M0.33%+5,53713F-HRTimeline
Permit Capital, LLCin group Permit Capital, LLC41,200$11.1M3.79%-38,80013F-HRTimelineGroup
CAPTRUST FINANCIAL ADVISORS40,576$11M0.02%+7,93913F-HRTimeline
Greenwich Wealth Management LLC39,632$10.7M0.44%+10013F-HRTimeline
Louisiana State Employees Retirement Sy…39,600$10.7M0.19%-80013F-HRTimeline
Caprock Group, LLC39,580$10.7M0.26%+6,88913F-HRTimeline
ASR Vermogensbeheer N.V.38,917$10.5M0.12%+67513F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND38,820$10.5M0.14%-34713F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC38,377$10.4M0.08%new13F-HRTimelineGroup
PRUDENTIAL PLCin group PRUDENTIAL PLC37,769$10.2M0.06%+30,86013F-HRTimelineGroup
Atika Capital Management LLCin group Atika Capital Management LLC37,717$10.2M1.61%new13F-HRTimelineGroup
Baird Financial Group, Inc.in group Baird Financial Group, Inc.36,938$9.99M0.02%+29,87313F-HRTimelineGroup
ALLSTATE CORPin group ALLSTATE CORP36,392$9.84M0.11%+9,93213F-HRTimelineGroup
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding36,273$9.81M+8,629Timeline
Verition Fund Management LLC36,263$9.81M0.1%-175,63613F-HRTimeline
Elo Mutual Pension Insurance Co36,160$9.78M0.16%-5,73613F-HRTimeline
Lombard Odier Asset Management (Switzer…36,118$9.77M0.37%+1,98913F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC36,103$9.77M0.14%-5,69413F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…36,056$9.75M0.11%-65213F-HRTimelineGroup
Grand Alliance Asset Management Ltd36,000$9.74M5.9%-15,00013F-HRTimeline
OP Asset Management Ltd35,173$9.51M0.1%-2,57413F-HR/ATimeline
YOUSIF CAPITAL MANAGEMENT, LLC35,067$9.49M0.11%-2,23613F-HRTimeline
Composition Wealth, LLC34,732$9.39M0.13%+30613F-HRTimeline
Advisory Services Network, LLC34,561$9.35M0.12%+7,02013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC34,506$9.33M0.01%-2,90113F-HRTimelineGroup
FORA Capital, LLC33,374$9.03M0.66%-28,01113F-HRTimeline
Munich Reinsurance Co Stock Corp in Mun…33,179$8.97M0.22%-14,76113F-HRTimeline
MIZUHO FINANCIAL GROUP INCgroup of 2 filers holding33,172$8.97M+8,277Timeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…33,049$8.94M<0.01%+1,85613F-HRTimelineGroup
JOHN G ULLMAN & ASSOCIATES INC32,958$8.91M1.18%-31,35013F-HRTimeline
OpenArc Corporate Advisory, LLC32,794$8.87M0.13%-3,38513F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC32,324$8.74M0.01%-53,41713F-HRTimeline
Norinchukin Bank, Thein group Norinchukin Bank, The32,278$8.73M0.1%+84213F-HRTimelineGroup
Arkadios Wealth Advisors31,688$8.57M0.14%-6,63113F-HRTimeline
Bellwether Advisors, LLC31,429$8.5M1.44%+13,68613F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC31,206$8.44M0.03%-27613F-HRTimelineGroup
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…29,356$7.94M0.5%-3,67513F-HRTimelineGroup
Lido Advisors, LLCin group Lido Advisors, LLC29,287$7.92M0.03%-9,11313F-HRTimelineGroup
CI INVESTMENTS INC.in group CI INVESTMENTS INC.28,914$7.82M0.04%+26,92913F-HRTimelineGroup
Up Capital Management, Inc.28,370$7.67M8.61%new13F-HRTimeline
Americana Partners, LLC28,325$7.66M0.2%+19,38713F-HRTimeline
Oribel Capital Management, LP28,200$7.63M1.16%new13F-HRTimeline
Merit Financial Group, LLC28,028$7.58M0.06%-11113F-HRTimeline
TORTOISE CAPITAL ADVISORS, L.L.C.27,906$7.55M0.08%+4,79013F-HRTimeline
Orion Porfolio Solutions, LLC27,822$7.53M0.06%+1,45413F-HRTimeline
Assenagon Asset Management S.A.27,537$7.45M0.01%-8,36313F-HRTimeline
OMERS ADMINISTRATION Corp27,242$7.37M0.05%+5,44713F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…27,100$7.33M0.06%013F-HRTimeline
ZACKS INVESTMENT MANAGEMENT27,075$7.32M0.06%+88513F-HRTimeline
Meeder Advisory Services, Inc.group of 2 filers holding26,681$7.22M+1,382Timeline
Gulf International Bank (UK) Ltd26,436$7.15M0.16%+9,64213F-HRTimeline
Banque Cantonale Vaudoisein group Banque Cantonale Vaudoise26,165$7.08M0.27%-26,71713F-HRTimelineGroup
Dilation Capital Management LP26,090$7.06M3.54%new13F-HRTimeline
PROFUND ADVISORS LLC25,825$6.99M0.26%-6,28413F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…25,813$6.98M0.18%-78013F-HRTimelineGroup
Janney Montgomery Scott LLC25,741$6.96M0.02%+1,44413F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.group of 2 filers holding25,698$6.95M+5,546Timeline
CSS LLC/IL25,433$6.88M0.38%-14,39013F-HRTimeline
Callan Family Office, LLC24,838$6.72M0.15%-1,98813F-HRTimeline
Polar Asset Management Partners Inc.23,945$6.48M0.15%new13F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd23,937$6.47M0.23%+20,13313F-HRTimelineGroup
Kestra Advisory Services, LLCgroup of 3 filers holding23,918$6.47M-3,447Timeline
Y-Intercept (Hong Kong) Ltd23,649$6.4M0.12%new13F-HRTimeline
CWA Asset Management Group, LLC23,645$6.4M0.22%+21,93813F-HRTimeline
NewEdge Wealth, LLC23,460$6.35M0.08%-7,93713F-HRTimeline
MITCHELL CAPITAL MANAGEMENT CO23,452$6.34M1.16%new13F-HRTimeline
China Universal Asset Management Co., L…23,137$6.26M0.47%+9,96213F-HRTimeline
Farther Finance Advisors, LLC20,944$6.24M0.06%-2,53413F-HRTimeline
BRIGHTON JONES LLC23,015$6.23M0.14%new13F-HR/ATimeline
INTECH INVESTMENT MANAGEMENT LLC22,890$6.19M0.06%-106,40313F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.22,849$6.18M0.01%-3,22413F-HRTimelineGroup
Integrated Wealth Concepts LLC22,631$6.12M0.05%+14,16813F-HRTimeline
Cavalier Investments, LLC22,610$6.12M1.58%-59,37013F-HRTimeline
BLAIR WILLIAM & CO/IL22,491$6.08M0.02%+3,57213F-HRTimeline
Beck Bode, LLC22,229$6.01M1.02%new13F-HRTimeline
Cambridge Investment Research Advisors,…22,157$5.99M0.02%-19,34013F-HRTimeline
Trek Financial, LLC21,828$5.9M0.31%new13F-HRTimeline
TTP Investments, Inc.20,897$5.65M2.36%-64213F-HRTimeline
BANK OF HAWAII20,857$5.64M0.3%-13,79413F-HRTimeline
Sterling Capital Management LLC20,747$5.61M0.11%-7,91513F-HRTimeline
WESTPAC BANKING CORPin group WESTPAC BANKING CORP20,720$5.6M0.39%+14,46213F-HRTimelineGroup
ABN AMRO INVESTMENT SOLUTIONSgroup of 2 filers holding20,683$5.59M+3,378Timeline
Harvest Investment Services, LLC20,643$5.58M1.02%+3,87613F-HRTimeline
E Fund Management Co., Ltd.20,570$5.56M0.17%13F-HRTimeline
ADAMS DIVERSIFIED EQUITY FUND, INC.in group ADAMS DIVERSIFIED EQUITY FUND…20,500$5.55M0.2%new13F-HRTimelineGroup
Polymer Capital Management (HK) LTD20,191$5.46M0.77%-40,69213F-HRTimeline
Convergence Investment Partners, LLC20,176$5.46M0.89%new13F-HRTimeline
Williamson Legacy Group, LLC19,948$5.4M4.05%+27713F-HRTimeline
CIBC WORLD MARKET INC.19,939$5.39M0.01%-31,94813F-HRTimeline
Krilogy Financial LLC14,820$5.36M0.17%+4,30113F-HRTimeline
Caitong International Asset Management …19,610$5.3M0.98%+19,59413F-HRTimeline