Who holds ticker verified against the SEC company list on 2026-09-10 — a reviewed name-and-class mapping row, never an inferred symbol. how tickers are mapped ↗

WESTERN DIGITAL CORP · COM · quarter ended 2026-03-31 · 14 members disclosed WDC ↗
13F filers reporting this class for the quarter ended 2026-03-31; 1–500 of 1,186 holders are listed, largest first
1,186
sum of the reported values across every holder; NULL values are excluded, never zero-filled
$82.2B
holders whose share count rose or who opened the position (new + add), by shares
653
holders absent this quarter after holding last quarter — inferred from absence, not a sale record
121
FILING WINDOW OPEN
Quarter 2026-09-30: the 13F window is open until 2026-11-16. Rankings and QoQ moves that touch this quarter are provisional by construction — filers who have not yet reported are not zeros.

Holders — quarter ended 2026-03-31

ranked by reported value · Δ shares vs 2025-12-31 · kind by shares
13F holders of WDC ranked by reported value
#FilerReported valueSharesΔ sharesChange
1BlackRock, Inc.$9.7B35,769,222+259,704ADD
2FMR LLC$8.6B31,623,418−2,170,383TRIM
3VANGUARD CAPITAL MANAGEMENT LLC$6.0B22,034,861—NO PRIOR
4VANGUARD PORTFOLIO MANAGEMENT LLC$4.6B17,172,653—NO PRIOR
5JPMORGAN CHASE & CO$4.4B17,512,148+3,216,183ADD
6STATE STREET CORP$4.2B15,465,766−230,188TRIM
7Capital World Investors$3.2B11,880,038+10,816,431ADD
8GEODE CAPITAL MANAGEMENT, LLC$2.6B9,477,201+194,769ADD
9BANK OF AMERICA CORP /DE/$2.3B8,489,612−3,555,039TRIM
10MORGAN STANLEY$2.1B7,939,106−1,005,556TRIM
11WCM INVESTMENT MANAGEMENT, LLC$1.7B6,561,810−129,399TRIM
12AMERIPRISE FINANCIAL INC$1.6B5,762,533−2,757,892TRIM
13Invesco Ltd.$1.5B5,530,864+75,621ADD
14UBS Group AG$1.1B4,182,454−368,367TRIM
15NORTHERN TRUST CORP$976M3,606,563−65,392TRIM
16AQR CAPITAL MANAGEMENT LLC$913M3,459,565+486,862ADD
17Capital Research Global Investors$895M3,309,625+3,309,625NEW
18Amundi$827M3,058,867+659,131ADD
19Nuveen, LLC$800M2,959,245−1,604,231TRIM
20UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$785M2,902,748+93,339ADD
21D. E. Shaw & Co., Inc.$727M2,688,230−3,013,088TRIM
22Bank of New York Mellon Corp$679M2,508,752+435,716ADD
23DIMENSIONAL FUND ADVISORS LP$677M2,503,321−1,062,021TRIM
24CHARLES SCHWAB INVESTMENT MANAGEMENT INC$597M2,206,941−59,768TRIM
25Legal & General Group Plc$576M2,129,170+95,615ADD
26VANGUARD FIDUCIARY TRUST CO$516M1,908,325—NO PRIOR
27DEUTSCHE BANK AG\$507M1,872,796−358,813TRIM
28HSBC HOLDINGS PLC$417M1,545,167−990,403TRIM
29National Pension Service$389M1,437,962+1,437,962NEW
30BANK OF MONTREAL /CAN/$380M1,405,042+373,990ADD
31Maple Rock Capital Partners Inc.$379M1,400,434−981,091TRIM
32AMF Tjanstepension AB$372M1,373,910−394,049TRIM
33Value Aligned Research Advisors, LLC$350M1,295,439+1,295,439NEW
34ROYAL BANK OF CANADA$344M1,271,074−711,979TRIM
35Soroban Capital Partners LP$310M1,146,2730NO CHANGE
36RENAISSANCE TECHNOLOGIES LLC$310M1,146,133+153,600ADD
37BARCLAYS PLC$284M1,050,033−476,351TRIM
38WELLS FARGO & COMPANY/MN$277M1,024,545+158,749ADD
39Swiss National Bank$271M1,003,307+52,500ADD
40Robeco Institutional Asset Management B.V.$266M984,685−392,066TRIM
41Polar Capital Holdings Plc$263M972,432+59,240ADD
42NOMURA ASSET MANAGEMENT INTERNATIONAL INC.$241M891,662−133,785TRIM
43Castle Hook Partners LP$238M878,939−446,731TRIM
44Sumitomo Mitsui Trust Group, Inc.$226M836,666−50,393TRIM
45DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main$224M827,668+412,055ADD
46VOYA INVESTMENT MANAGEMENT LLC$221M817,564+448,942ADD
47WT Asset Management Ltd$221M816,707+405,249ADD
48Mitsubishi UFJ Asset Management Co., Ltd.$216M796,983+45,781ADD
49Holocene Advisors, LP$206M761,886−173,096TRIM
50Vanguard Global Advisers, LLC$202M745,156—NO PRIOR
51Anther Capital Ltd$193M712,395—NO PRIOR
52ENVESTNET ASSET MANAGEMENT INC$190M701,352+108,079ADD
53PRINCIPAL FINANCIAL GROUP INC$183M676,042−316,689TRIM
54CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM$182M671,717−127,043TRIM
55Point72 Asset Management, L.P.$169M623,944+445,159ADD
56PRUDENTIAL FINANCIAL INC$167M616,644−402,509TRIM
57BALYASNY ASSET MANAGEMENT L.P.$167M616,559+386,903ADD
58VANGUARD ASSET MANAGEMENT, Ltd$159M588,392—NO PRIOR
59Jericho Capital Asset Management L.P.$157M581,562+581,562NEW
60PRIMECAP MANAGEMENT CO/CA/$156M577,210−176,330TRIM
61CITIGROUP INC$155M572,493−786,716TRIM
62SUSQUEHANNA INTERNATIONAL GROUP, LLP$154M568,828+334,887ADD
63NOMURA ASSET MANAGEMENT CO LTD$138M509,267−612,828TRIM
64ProShare Advisors LLC$136M501,292−116,769TRIM
65VICTORY CAPITAL MANAGEMENT INC$134M497,009−90,489TRIM
66SEI INVESTMENTS CO$134M495,174+23,977ADD
67ALLIANCEBERNSTEIN L.P.$131M763,080−865,947TRIM
68Universal- Beteiligungs- und Servicegesellschaft mbH$128M473,874+89,784ADD
69Neuberger Berman Group LLC$123M456,245+30,456ADD
70NATIONAL BANK OF CANADA /FI/$118M434,731+161,199ADD
71Whale Rock Capital Management LLC$111M412,006+412,006NEW
72Employees Provident Fund Board$110M405,167+405,167NEW
73LPL Financial LLC$107M396,886+63,669ADD
74PARNASSUS INVESTMENTS, LLC$107M396,802−126,695TRIM
75BNP Paribas Asset Management Holding S.A.$101M373,591+168,406ADD
76FIRST TRUST ADVISORS LP$100M369,889−257,290TRIM
77Gotham Asset Management, LLC$99.5M367,768−138,986TRIM
78NORDEA INVESTMENT MANAGEMENT AB$99.0M380,371+282,309ADD
79Korea Investment CORP$98.8M365,410−5,101TRIM
80BANK OF NOVA SCOTIA$98.2M363,175−765,788TRIM
81MACKENZIE FINANCIAL CORP$98.1M362,557−140,737TRIM
82CAISSE DE DEPOT ET PLACEMENT DU QUEBEC$97.0M358,429−234,867TRIM
83STOREBRAND ASSET MANAGEMENT AS$96.6M356,953—NO PRIOR
84Quadrature Capital Ltd$96.0M354,942+354,942NEW
85Trivest Advisors Ltd$93.3M345,000−530,000TRIM
86Quantinno Capital Management LP$91.6M338,635−34,550TRIM
87CANADA PENSION PLAN INVESTMENT BOARD$90.3M334,006−48,204TRIM
88BAHL & GAYNOR INC$88.0M325,336−49,639TRIM
89DANSKE BANK A/S$87.6M323,908−16,615TRIM
90PFA Pension, Forsikringsaktieselskab$86.2M318,651+318,651NEW
91Amanah Holdings Trust$85.2M315,0000NO CHANGE
92RAYMOND JAMES FINANCIAL INC$83.9M310,095−26,708TRIM
93AVIVA PLC$83.3M307,992+2,684ADD
94STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM$81.4M300,995−2,691TRIM
95ADAGE CAPITAL PARTNERS GP, L.L.C.$79.5M293,737+35,100ADD
96HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND$79.3M293,161+145,961ADD
97FRANKLIN RESOURCES INC$76.4M282,591−74,381TRIM
98MILLENNIUM MANAGEMENT LLC$75.1M277,653−39,552TRIM
99IEQ CAPITAL, LLC$74.7M276,112+31,332ADD
100Connor, Clark & Lunn Investment Management Ltd.$74.5M275,539+45,068ADD
101XN LP$74.5M275,482+275,482NEW
102CITADEL ADVISORS LLC$71.9M265,868−1,053,898TRIM
103SCHRODER INVESTMENT MANAGEMENT GROUP$71.7M265,088−20,113TRIM
104Aberdeen Group plc$71.0M262,328−10,159TRIM
105TEACHER RETIREMENT SYSTEM OF TEXAS$69.9M258,564−108,776TRIM
106Squarepoint Ops LLC$69.8M258,100−264,190TRIM
107Bridgewater Associates, LP$67.4M249,039+176,700ADD
108Clear Street Group Inc.$65.1M240,750+240,750NEW
109ASSETMARK, INC$64.7M239,012−30,898TRIM
110NEOS Investment Management LLC$63.1M233,321+101,002ADD
111Mirae Asset Global Investments Co., Ltd.$61.7M227,957+43,682ADD
112AustralianSuper Pty Ltd$60.8M224,701−126,971TRIM
113MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$60.1M222,272−3,267TRIM
114STATE OF WISCONSIN INVESTMENT BOARD$60.1M222,130−4,836TRIM
115ROYAL LONDON ASSET MANAGEMENT LTD$59.4M219,458+47,857ADD
116Pictet Asset Management Holding SA$58.3M215,749−126,767TRIM
117O'SHAUGHNESSY ASSET MANAGEMENT, LLC$57.3M211,887+47,155ADD
118CAPITOLIS LIQUID GLOBAL MARKETS LLC$57.1M211,200+211,200NEW
119HAWK RIDGE CAPITAL MANAGEMENT LP$56.6M209,400−116,300TRIM
120BRAUN STACEY ASSOCIATES INC$56.1M207,494−35,872TRIM
121Walleye Trading LLC$55.9M206,486+114,978ADD
122GENDELL JEFFREY L$54.1M200,009−10,180TRIM
123Rokos Capital Management LLP$53.7M198,460+198,460NEW
124AMERICAN CENTURY COMPANIES INC$53.6M198,164+56,079ADD
125Swedbank AB$52.9M195,532−28,783TRIM
126ARS Investment Partners, LLC$51.9M191,888−67,328TRIM
127SAMLYN CAPITAL, LLC$51.2M189,287+189,287NEW
128Avala Global LP$51.1M189,1000NO CHANGE
129NEW YORK STATE COMMON RETIREMENT FUND$51.1M188,879+11,300ADD
130MASSACHUSETTS FINANCIAL SERVICES CO /MA/$50.2M185,516+171,574ADD
131WORLDQUANT MILLENNIUM ADVISORS LLC$50.0M184,934−456,991TRIM
132Empowered Funds, LLC$49.8M184,287+184,287NEW
133Mariner, LLC$48.8M180,497+45,309ADD
134MANUFACTURERS LIFE INSURANCE COMPANY, THE$48.7M179,927−15,432TRIM
135Ensign Peak Advisors, Inc$48.1M177,891+87,284ADD
1361832 Asset Management L.P.$47.3M175,013+156,771ADD
137Talos Eurisko Asset Management LP$47.0M173,792−33,042TRIM
138ING GROEP NV$46.9M173,456−61,254TRIM
139TD ASSET MANAGEMENT INC$46.9M173,242+32,695ADD
140Cerity Partners LLC$46.8M173,004−7,591TRIM
141KLP KAPITALFORVALTNING AS$46.7M172,723+4,400ADD
142Vanguard Investments Australia, Ltd.$46.2M170,650—NO PRIOR
143Chevy Chase Trust Holdings, LLC$45.3M167,328−6,056TRIM
144STIFEL FINANCIAL CORP$45.1M166,695+6,002ADD
145CIBC Bancorp USA Inc.$44.2M163,532—NO PRIOR
146APG Asset Management N.V.$42.6M181,649−17,468TRIM
147Alyeska Investment Group, L.P.$42.0M155,284−22,008TRIM
148LGT Group Foundation$41.8M154,500−9,349TRIM
149Mitsubishi UFJ Trust & Banking Corp$41.6M153,795+13,268ADD
150Crossmark Global Holdings, Inc.$41.3M152,664—NO PRIOR
151Asset Management One Co., Ltd.$40.1M148,345−4,531TRIM
152Tredje AP-fonden$40.1M148,214−94,715TRIM
153TORONTO DOMINION BANK$39.5M146,065−28,792TRIM
154JUPITER ASSET MANAGEMENT LTD$38.6M142,800+76,607ADD
155CIBC Asset Management Inc$38.2M141,348−1,928TRIM
156MERCER GLOBAL ADVISORS INC /ADV$38.2M141,222−1,454TRIM
157Ceredex Value Advisors LLC$38.0M140,666−89,753TRIM
158PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO$37.9M140,165−11,589TRIM
159Atalan Capital Partners, LP$36.4M134,550−570,850TRIM
160Migdal Insurance & Financial Holdings Ltd.$36.2M134,000+134,000NEW
161Creative Planning$35.6M131,649+24,791ADD
162Candriam S.C.A.$35.4M130,989−25,320TRIM
163Spartan Wealth Advisory Services LLC$34.6M128,061—NO PRIOR
164Alta Park Capital, LP$34.2M126,583−266,896TRIM
165Susquehanna Portfolio Strategies, LLC$33.7M124,6610NO CHANGE
166Illinois Municipal Retirement Fund$33.6M124,156−15,376TRIM
167CWM, LLC$32.7M120,888+18,361ADD
168Rafferty Asset Management, LLC$32.5M120,183−57,473TRIM
169DEPRINCE RACE & ZOLLO INC$32.0M118,245−62,494TRIM
170Focus Partners Wealth$32.0M117,137+71,028ADD
171State of New Jersey Common Pension Fund D$31.8M117,489−1,822TRIM
172Rivermont Capital Management LP$31.3M115,665−38,644TRIM
173Schonfeld Strategic Advisors LLC$30.8M113,743−95,238TRIM
174Cetera Investment Advisers$30.4M112,415+17,861ADD
175Eurizon Capital SGR S.p.A.$29.7M110,156+110,156NEW
176APIS CAPITAL ADVISORS, LLC$29.6M109,600−70,300TRIM
177Resona Asset Management Co.,Ltd.$28.8M107,825+142ADD
178Allianz Asset Management GmbH$28.7M106,215−21,097TRIM
179GATEWAY INVESTMENT ADVISERS LLC$28.7M106,203+59,427ADD
180FIL Ltd$28.1M103,738+26,856ADD
181STATE OF MICHIGAN RETIREMENT SYSTEM$27.8M102,657−1,000TRIM
182NISA INVESTMENT ADVISORS, LLC$27.4M101,402−82TRIM
183NewEdge Advisors, LLC$26.9M99,548+99,548NEW
184Zurcher Kantonalbank (Zurich Cantonalbank)$26.4M97,488+7,491ADD
185NISSAY ASSET MANAGEMENT CORP /JAPAN$26.3M97,121+1,946ADD
186Nationale-Nederlanden Powszechne Towarzystwo Emerytalne S.A.$26.2M96,947−130,378TRIM
187PANAGORA ASSET MANAGEMENT INC$26.2M96,741+58,267ADD
188SEB Asset Management AB$25.8M95,487—NO PRIOR
189WEALTH ENHANCEMENT ADVISORY SERVICES, LLC$25.6M94,398+19,539ADD
190US BANCORP \DE\$25.4M93,840−282TRIM
191Arizona State Retirement System$25.3M93,674−1,928TRIM
192Czech National Bank$25.0M92,336+2,182ADD
193Tidal Investments LLC$24.6M90,848+37,832ADD
194Daiwa Securities Group Inc.$24.5M90,560+3,947ADD
195UNICOM Systems, Inc.$24.5M90,500+90,500NEW
196Swiss Life Asset Management Ltd$24.3M89,969−36,571TRIM
197GUGGENHEIM CAPITAL LLC$24.2M89,468−18,961TRIM
198FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND$24.2M89,416+34,950ADD
199BANCO BILBAO VIZCAYA ARGENTARIA, S.A.$23.8M88,462+7,289ADD
200Sumitomo Mitsui DS Asset Management Company, Ltd$23.6M87,304−9,439TRIM
201LOOMIS SAYLES & CO L P$23.5M87,059−78,670TRIM
202MML INVESTORS SERVICES, LLC$23.1M85,314+7,053ADD
203Temasek Holdings (Private) Ltd$22.5M83,092+83,092NEW
204LAZARD ASSET MANAGEMENT LLC$22.4M82,694−178,901TRIM
205Andra AP-fonden$22.1M81,737−178,663TRIM
206Man Group plc$22.1M81,619−96,785TRIM
207LBP AM SA$21.7M80,109+74,774ADD
208MetLife Investment Management, LLC$21.4M79,241−2,691TRIM
209COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS$21.4M78,976−552TRIM
210Mediolanum International Funds Ltd$20.9M83,123−11,971TRIM
211Varma Mutual Pension Insurance Co$20.6M76,1000NO CHANGE
212IMC-Chicago, LLC$20.4M75,502+75,502NEW
213Park West Asset Management LLC$20.3M75,027−36,500TRIM
214DnB Asset Management AS$19.9M73,714+7,229ADD
215Central Asset Investments & Management Holdings (HK) Ltd$19.9M73,560−60,188TRIM
216IFM Investors Pty Ltd$19.7M72,760−228TRIM
217FIFTH THIRD BANCORP$19.7M72,692+52,359ADD
218Retirement Systems of Alabama$19.5M71,998−736TRIM
219PUBLIC SECTOR PENSION INVESTMENT BOARD$19.0M70,288+20,230ADD
220LGT Fund Management Co Ltd.$18.6M68,870+52,670ADD
221OSAIC HOLDINGS, INC.$18.5M68,556−18,056TRIM
222Parallax Volatility Advisers, L.P.$18.5M68,462−28,755TRIM
223Engineers Gate Manager LP$18.4M68,069−24,275TRIM
224OFI INVEST ASSET MANAGEMENT$17.8M75,454−62,177TRIM
225QRG CAPITAL MANAGEMENT, INC.$17.8M65,785+4,647ADD
226Rakuten Investment Management, Inc.$17.7M70,489+6,845ADD
227Melqart Asset Management (UK) Ltd$17.4M64,216−35,215TRIM
228Corient Private Wealth LLC$17.3M65,355−175,373TRIM
229XPONANCE LLC$17.3M63,879+7,366ADD
230Vanguard Personalized Indexing Management, LLC$17.1M63,184+2,197ADD
231Sienna Gestion$17.1M67,254−18,727TRIM
232Vident Advisory, LLC$16.6M61,407+50,015ADD
233CHAPIN DAVIS, INC.$16.5M61,041−17,348TRIM
234American Assets Investment Management, LLC$16.2M60,0000NO CHANGE
235Tyro Capital Management LLC$16.1M59,548+59,548NEW
236UniSuper Management Pty Ltd$16.0M59,251−7,526TRIM
237Investment Management Corp of Ontario$16.0M59,201+29,933ADD
238CREDIT AGRICOLE S A$15.9M58,681−166TRIM
239ODDO BHF ASSET MANAGEMENT SAS$15.7M58,195−24,415TRIM
240Prospera Financial Services Inc$15.3M56,710+31,135ADD
241TUDOR INVESTMENT CORP ET AL$15.1M55,793+53,842ADD
242Utah Retirement Systems$15.0M55,294−1,462TRIM
243Sanctuary Advisors, LLC$14.6M53,854−1,085TRIM
244Attestor Capital Ltd$14.3M52,927+30,860ADD
245Maytus Capital Management, LLC$14.2M52,501−70,499TRIM
246Vinva Investment Management Ltd$14.1M56,204−142,524TRIM
247Allspring Global Investments Holdings, LLC$14.1M47,202+3,810ADD
248Janus Henderson Group Ltd.$14.0M51,727+16,682ADD
249ELEVATION POINT WEALTH PARTNERS, LLC$13.9M51,393+49,550ADD
250Rockefeller Capital Management L.P.$13.9M51,233−5,158TRIM
251EXCHANGE TRADED CONCEPTS, LLC$13.8M51,150+8,026ADD
252NEW YORK LIFE INVESTMENT MANAGEMENT LLC$13.7M50,802+4,018ADD
253Calamos Advisors LLC$13.5M49,820+49,820NEW
254Federation des caisses Desjardins du Quebec$13.5M49,790−14,309TRIM
255Ethic Inc.$13.4M49,359+14,933ADD
256Walleye Capital LLC$13.3M49,189−8,982TRIM
257S&T BANK/PA$13.1M48,501−18,091TRIM
258PEAK6 LLC$13.0M48,116+48,116NEW
259RITHOLTZ WEALTH MANAGEMENT$12.8M47,387+17,471ADD
260BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp$12.7M47,122−14,439TRIM
261HighTower Advisors, LLC$12.7M47,036+11,743ADD
262Summit Trail Advisors, LLC$12.7M47,018+3,317ADD
263ROBOTTI ROBERT$12.6M46,544−38,289TRIM
264Wealthfront Advisers LLC$12.4M45,852+12,506ADD
265TRUIST FINANCIAL CORP$12.2M45,177+8,165ADD
266Empirical Financial Services, LLC d.b.a. Empirical Wealth Management$12.1M44,864−3,597TRIM
267MACQUARIE GROUP LTD$12.1M44,830−21,661TRIM
268XTX Topco Ltd$12.1M44,678+31,881ADD
269Banco Santander, S.A.$12.1M44,628+37,208ADD
270BOOTHBAY FUND MANAGEMENT, LLC$12.0M44,454−35,356TRIM
271Vestmark Advisory Solutions, Inc.$11.9M44,087+38,545ADD
272Mubadala Investment Co PJSC$11.9M43,980+43,980NEW
273SHELTON CAPITAL MANAGEMENT$11.5M42,349−1,540TRIM
274ExodusPoint Capital Management, LP$11.4M42,277+42,277NEW
275Lansforsakringar Fondforvaltning AB (publ)$11.2M41,491+11,416ADD
276Permit Capital, LLC$11.1M41,200−38,800TRIM
277Caprock Group, LLC$10.7M39,580+6,889ADD
278ASR Vermogensbeheer N.V.$10.5M38,917+675ADD
279OREGON PUBLIC EMPLOYEES RETIREMENT FUND$10.5M38,820−347TRIM
280PRUDENTIAL PLC$10.2M37,769+30,860ADD
281Atika Capital Management LLC$10.2M37,717+37,717NEW
282Baird Financial Group, Inc.$10.0M36,938+36,938NEW
283Verition Fund Management LLC$9.8M36,263−175,636TRIM
284Elo Mutual Pension Insurance Co$9.8M36,160−5,736TRIM
285Lombard Odier Asset Management (Switzerland) SA$9.8M36,118+1,989ADD
286MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC$9.8M36,056−652TRIM
287Grand Alliance Asset Management Ltd$9.7M36,000−15,000TRIM
288NOMURA HOLDINGS INC$9.7M35,958−278,032TRIM
289NATIXIS$9.6M35,376−182,478TRIM
290OP Asset Management Ltd$9.5M35,173—NO PRIOR
291YOUSIF CAPITAL MANAGEMENT, LLC$9.5M35,067−2,236TRIM
292Composition Wealth, LLC$9.4M34,732+306ADD
293JANE STREET GROUP, LLC$9.3M34,506−2,901TRIM
294FORA Capital, LLC$9.0M33,374−28,011TRIM
295WELLINGTON MANAGEMENT GROUP LLP$8.9M33,049+1,856ADD
296JOHN G ULLMAN & ASSOCIATES INC$8.9M32,958−31,350TRIM
297OpenArc Corporate Advisory, LLC$8.9M32,794−3,385TRIM
298COMMONWEALTH EQUITY SERVICES, LLC$8.7M32,324−53,417TRIM
299Norinchukin Bank, The$8.7M32,278+842ADD
300Bellwether Advisors, LLC$8.5M31,429+13,686ADD
301Pathstone Holdings, LLC$8.4M31,206−276TRIM
302Capital International, Inc./CA/$8.1M30,083+30,083NEW
303LANDSCAPE CAPITAL MANAGEMENT, L.L.C.$7.9M29,356−3,675TRIM
304Lido Advisors, LLC$7.9M29,287−9,113TRIM
305CI INVESTMENTS INC.$7.8M28,914+26,929ADD
306Up Capital Management, Inc.$7.7M28,370+28,370NEW
307Americana Partners, LLC$7.7M28,325+19,387ADD
308Oribel Capital Management, LP$7.6M28,200+28,200NEW
309Merit Financial Group, LLC$7.6M28,028−111TRIM
310Orion Porfolio Solutions, LLC$7.5M27,822+1,454ADD
311Assenagon Asset Management S.A.$7.4M27,537−8,363TRIM
312OMERS ADMINISTRATION Corp$7.4M27,242+5,447ADD
313ZACKS INVESTMENT MANAGEMENT$7.3M27,075+885ADD
314Banque Cantonale Vaudoise$7.1M26,165−26,717TRIM
315Dilation Capital Management LP$7.1M26,090+26,090NEW
316PROFUND ADVISORS LLC$7.0M25,825−6,284TRIM
317Tower Research Capital LLC (TRC)$7.0M25,813−780TRIM
318CSS LLC/IL$6.9M25,433−14,390TRIM
319NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO$6.9M25,424+8,705ADD
320Callan Family Office, LLC$6.7M24,838−1,988TRIM
321Polar Asset Management Partners Inc.$6.5M23,945+23,945NEW
322WINTON GROUP Ltd$6.5M23,937+20,133ADD
323Y-Intercept (Hong Kong) Ltd$6.4M23,649+23,649NEW
324CWA Asset Management Group, LLC$6.4M23,645+21,938ADD
325NewEdge Wealth, LLC$6.3M23,460−7,937TRIM
326MITCHELL CAPITAL MANAGEMENT CO$6.3M23,452+23,452NEW
327INTECH INVESTMENT MANAGEMENT LLC$6.2M22,890−106,403TRIM
328FEDERATED HERMES, INC.$6.2M22,849−3,224TRIM
329Cavalier Investments, LLC$6.1M22,610−59,370TRIM
330BLAIR WILLIAM & CO/IL$6.1M22,491+3,572ADD
331Beck Bode, LLC$6.0M22,229+22,229NEW
332Trek Financial, LLC$5.9M21,828+21,828NEW
333TTP Investments, Inc.$5.7M20,897−642TRIM
334Sterling Capital Management LLC$5.6M20,747−7,915TRIM
335WESTPAC BANKING CORP$5.6M20,720+20,720NEW
336ABN AMRO INVESTMENT SOLUTIONS$5.6M20,683+3,378ADD
337Harvest Investment Services, LLC$5.6M20,643+3,876ADD
338E Fund Management Co., Ltd.$5.6M20,570—NO PRIOR
339ADAMS DIVERSIFIED EQUITY FUND, INC.$5.5M20,500+20,500NEW
340MIZUHO SECURITIES USA LLC$5.5M20,496−4,399TRIM
341Polymer Capital Management (HK) LTD$5.5M20,191−40,692TRIM
342Convergence Investment Partners, LLC$5.5M20,176+20,176NEW
343CIBC WORLD MARKET INC.$5.4M19,939−31,948TRIM
344Krilogy Financial LLC$5.4M14,820+4,301ADD
345Caitong International Asset Management Co., Ltd$5.3M19,610+19,594ADD
346Focus Partners Advisor Solutions, LLC$5.3M19,525+1,853ADD
347Blackstone Inc.$5.2M19,352−1,253TRIM
348HARTFORD INVESTMENT MANAGEMENT CO$5.2M19,331−428TRIM
349Dana Investment Advisors, Inc.$5.2M19,328−11,792TRIM
350Collar Capital Management, LLC$5.2M19,226−2,472TRIM
351Avanza Fonder AB$5.2M19,185−306TRIM
352L & S Advisors Inc$5.1M19,003−37,931TRIM
353Pallas Capital Advisors LLC$5.1M18,991−604TRIM
354KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC$5.1M18,881+3,945ADD
355TRIGLAV INVESTMENTS, D.O.O.$5.1M18,700+18,700NEW
356St. Louis Financial Planners Asset Management, LLC$5.0M18,667+18,667NEW
357TD Waterhouse Canada Inc.$5.0M16,913+10,889ADD
358Aptus Capital Advisors, LLC$5.0M18,515+15,881ADD
359Parkway Wealth Management Group, LLC$5.0M14,791−5,705TRIM
360HIGHLAND PEAK CAPITAL, LLC$5.0M18,437−75,017TRIM
361SHARPEPOINT LLC$5.0M18,328−6,284TRIM
362M&T BANK CORP$4.9M18,068−12TRIM
363ARMISTICE CAPITAL, LLC$4.8M17,885+17,885NEW
364Private Advisory Group LLC$4.8M17,828+10,549ADD
365MISSION WEALTH MANAGEMENT, LP$4.8M17,803+11,884ADD
366SummitTX Capital, L.P.$4.7M17,557+17,557NEW
367Vontobel Holding Ltd.$4.7M17,431+13,023ADD
368STANCE CAPITAL LLC$4.6M17,159+9,697ADD
369PINKERTON WEALTH, LLC$4.6M26,783+1,984ADD
370Maryland State Retirement & Pension System$4.6M17,057−206TRIM
371COMMERCE BANK$4.6M16,833+737ADD
372Osmosis Investment Management UK Ltd$4.5M16,814+16,814NEW
373Bleakley Financial Group, LLC$4.5M16,715−3,430TRIM
374Sequoia Financial Advisors, LLC$4.5M16,684+3,035ADD
375North Dakota State Investment Board$4.5M16,648−2,371TRIM
376BOKF, NA$4.5M16,504+16,224ADD
377PRELUDE CAPITAL MANAGEMENT, LLC$4.4M16,373−24,544TRIM
378Night Squared LP$4.4M16,282−707TRIM
379Systematic Alpha Investments, LLC$4.3M16,0000NO CHANGE
380QUADRANT CAPITAL GROUP LLC$4.2M15,626−352TRIM
381Sava Infond d.o.o.$4.2M15,600+15,600NEW
382Brevan Howard Capital Management LP$4.2M15,555+15,555NEW
383ROMANO BROTHERS AND COMPANY$4.2M15,401+175ADD
384Atria Investments, Inc$4.2M15,387+2,759ADD
385&PARTNERS$4.2M15,060−618TRIM
386Ameritas Investment Partners, Inc.$4.1M15,337−130TRIM
387World Investment Advisors$4.1M15,280+9,330ADD
388MEEDER ASSET MANAGEMENT INC$4.1M15,231+1,022ADD
389Capital International Sarl$4.1M15,192+15,192NEW
390VestGen Advisors, LLC$4.1M8,404+8,404NEW
391AXQ CAPITAL, LP$4.1M15,158+12,775ADD
392Fisher Asset Management, LLC$4.1M15,084+3,093ADD
393BECK CAPITAL MANAGEMENT, LLC$4.1M15,063+15,063NEW
394HB Wealth Management, LLC$4.1M15,023+5,185ADD
395Dai-ichi Life Insurance Company, Ltd$4.0M14,835+3,308ADD
396Spire Wealth Management$4.0M14,789+11,744ADD
397INDEPENDENT FINANCIAL GROUP, LLC$3.9M14,597—NO PRIOR
398AG2R LA MONDIALE GESTION D'ACTIFS$3.9M14,478−113TRIM
399Wakefield Asset Management LLLP$3.9M14,349+14,349NEW
400Camarda Financial Advisors, LLC$3.8M14,180−1,283TRIM
401Summit Financial, LLC$3.8M14,106+12,600ADD
402MUFG Securities EMEA plc$3.8M13,899−117TRIM
403SteelPeak Wealth, LLC$3.7M13,776−21,289TRIM
404TOKIO MARINE ASSET MANAGEMENT CO LTD$3.7M13,7150NO CHANGE
405Chicago Partners Investment Group LLC$3.7M9,531+1,833ADD
406KNIGHTSBRIDGE ASSET MANAGEMENT, LLC$3.7M13,626—NO PRIOR
407Baader Bank Aktiengesellschaft$3.7M14,413+6,065ADD
408Inspire Investing, LLC$3.7M13,580+11,707ADD
409OPPENHEIMER ASSET MANAGEMENT INC.$3.7M13,553−29TRIM
410Kovack Advisors, Inc.$3.6M12,038+6,746ADD
411Lifestyle Asset Management, Inc.$3.6M13,449−2,835TRIM
412Artemis Investment Management LLP$3.6M13,364−138,593TRIM
413Jefferies Financial Group Inc.$3.6M13,348+3,034ADD
414Woodline Partners LP$3.6M13,336−96,221TRIM
415UNITED CAPITAL FINANCIAL ADVISORS, LLC$3.6M13,257+13,257NEW
416PINNBROOK CAPITAL MANAGEMENT LP$3.6M13,200−28,123TRIM
417Cache Advisors, LLC$3.5M13,096+13,096NEW
418Metis Global Partners, LLC$3.5M13,093−2,658TRIM
419Roehl & Yi Investment Advisors, LLC$3.5M12,918+12,918NEW
420PRINCIPAL SECURITIES, INC.$3.4M12,680+3,968ADD
421MIZUHO MARKETS AMERICAS LLC$3.4M12,676+12,676NEW
422Saudi Central Bank$3.4M12,620+12,620NEW
423Everhart Financial Group, Inc.$3.4M12,488−80TRIM
424FLORIDA FINANCIAL ADVISORS, LLC$3.4M12,455+2,602ADD
425KESTRA PRIVATE WEALTH SERVICES, LLC$3.4M12,439−985TRIM
426Laird Norton Wetherby Trust Company, LLC$3.4M12,400+1,008ADD
427OPPENHEIMER & CO INC$3.3M12,145+5,575ADD
428DAVENPORT & Co LLC$3.3M12,140+8,631ADD
429Genus Capital Management Inc.$3.2M12,000+12,000NEW
430ARGONAUTICA PRIVATE WEALTH MANAGEMENT, INC$3.2M11,848+88ADD
431E. Ohman J:or Asset Management AB$3.2M11,7540NO CHANGE
432Concurrent Investment Advisors, LLC$3.2M11,690+3,603ADD
433Emerald Investment Advisers, LLC$3.1M11,539—NO PRIOR
434Meiji Yasuda Asset Management Co Ltd.$3.1M11,518+11,518NEW
435LEVEL FOUR ADVISORY SERVICES, LLC$3.1M11,474−2,492TRIM
436Meeder Advisory Services, Inc.$3.1M11,450+360ADD
437Compagnie Lombard Odier SCmA$3.1M11,380+11,380NEW
438Highview Capital Management LLC/DE/$3.0M11,142+335ADD
439ALERUS FINANCIAL NA$3.0M11,102−5,565TRIM
440PKO Investment Management Joint-Stock Co$3.0M11,000+5,000ADD
441PATTON FUND MANAGEMENT, INC.$3.0M10,953−18,875TRIM
442Empirical Finance, LLC$3.0M10,915−6TRIM
443Financial Synergies Wealth Advisors, Inc.$2.9M10,873+9,619ADD
444NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC$2.9M10,849−76TRIM
445Independent Advisor Alliance$2.9M10,752+7,216ADD
446Canada Post Corp Registered Pension Plan$2.8M10,529−100TRIM
447Richard Bernstein Advisors LLC$2.8M10,478−5,054TRIM
448CHOREO, LLC$2.8M10,303−45TRIM
449Plato Investment Management Ltd$2.8M10,279−1,759TRIM
450Kestra Advisory Services, LLC$2.8M10,262−3,679TRIM
451Alight Capital Management LP$2.7M10,0000NO CHANGE
452DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD.$2.7M9,805+3,227ADD
453LVW Advisors, LLC$2.6M9,618+9,618NEW
454Steward Partners Investment Advisory, LLC$2.6M9,616−1,039TRIM
455GROUPAMA ASSET MANAGMENT$2.6M9,595+6,788ADD
456Brooklyn Investment Group$2.6M9,590+3,623ADD
457Range Financial Group LLC$2.6M9,558−343TRIM
458Generali Asset Management SPA SGR$2.6M9,536−3,146TRIM
459Donoghue Forlines LLC$2.6M9,504−3,092TRIM
460COLDSTREAM CAPITAL MANAGEMENT INC$2.6M9,481+1,370ADD
461CHESAPEAKE CAPITAL CORP /IL/$2.5M9,4180NO CHANGE
462MUFG SECURITIES AMERICAS INC.$2.5M9,381+170ADD
463Dedeker Financial LLC$2.5M9,309+271ADD
464Ascent Group, LLC$2.5M9,300+3,205ADD
465Private Advisor Group, LLC$2.5M9,278+5,765ADD
466SECURIAN ASSET MANAGEMENT, INC$2.5M9,196−100TRIM
467U.S. Capital Wealth Advisors, LLC$2.5M9,188+135ADD
468Kepler Cheuvreux (Suisse) SA$2.5M9,150+9,150NEW
469Western Financial Corp/CA$2.5M9,065+9,065NEW
470Beacon Pointe Advisors, LLC$2.4M8,891+6,497ADD
471Centiva Capital, LP$2.4M8,847+8,847NEW
472Apollon Wealth Management, LLC$2.4M8,838+2,322ADD
473One Capital Management, LLC$2.4M8,801+8,801NEW
474JACOBS LEVY EQUITY MANAGEMENT, INC$2.3M8,672+8,672NEW
475Kathmere Capital Management, LLC$2.3M8,568+3,598ADD
476Envestnet Portfolio Solutions, Inc.$2.3M8,345−7,818TRIM
477SIGNATUREFD, LLC$2.2M8,250+2,771ADD
478NorthCrest Asset Manangement, LLC$2.2M7,561−1,904TRIM
479UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT CO$2.2M8,224+6,734ADD
480Clear Harbor Asset Management, LLC$2.2M8,104−578TRIM
481MAI Capital Management$2.2M8,067+3,059ADD
482Savant Capital, LLC$2.2M8,040+1,190ADD
483KR Capital LP$2.2M8,013—NO PRIOR
484Retireful, LLC$2.2M8,004−500TRIM
485III Capital Management$2.2M7,979−10,527TRIM
486Bull Harbor Capital LLC$2.1M7,935—NO PRIOR
487BankChampaign, National Association$2.1M7,869—NO PRIOR
488CAPSTONE INVESTMENT ADVISORS, LLC$2.1M7,825+4,923ADD
489HANSEATIC MANAGEMENT SERVICES INC$2.1M7,814—NO PRIOR
490Leonteq Securities AG$2.1M7,784−2,292TRIM
491Decker Retirement Planning Inc.$2.1M7,754−11,899TRIM
492Quantbot Technologies LP$2.1M7,662−8,324TRIM
493SCOTIA CAPITAL INC.$2.0M7,575+1,271ADD
494Colonial River Investments, LLC$2.0M7,556−4,927TRIM
495Estate Counselors, LLC$2.0M7,500−18,087TRIM
496Frec Markets, Inc.$2.0M7,475+1,623ADD
497Legacy Wealth Managment, LLC/ID$2.0M7,383+7,376ADD
498CITIZENS FINANCIAL GROUP INC/RI$2.0M7,358+2,037ADD
499Precision Wealth Strategies, LLC$2.0M7,342+1,704ADD
500Siemens Fonds Invest GmbH$2.0M7,247+2,400ADD
Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Congress ↔ notable managers · WDC

who in Congress disclosed purchases or sales beside which notable managers added or trimmed

Congress · last 90 days

Buyers
2 Alan Armstrong R–OK, Gilbert Ray Cisneros, Jr. D–CA-31 $2K–$30K
Sellers
0 — —

filed 2026-07-03 → 2026-10-01 · totals are statutory ranges

Notable managers · quarter ended 2026-03-31

NEW + ADD vs TRIM + EXIT, by shares · $ = reported value now, not the change · WESTERN DIGITAL CORP

Merged timeline of congressional filings and notable-manager moves on WDC
DateWhoChangeSize
2026-09-04Gilbert Ray Cisneros, Jr. CongressBUY$1K–$15K
2026-07-21Alan Armstrong CongressBUY$1K–$15K
2026-05-15Bridgewater Associates 13FADD+176,700 sh
2026-05-15Tudor Investment Corp 13FADD+53,842 sh
2026-05-15Moore Capital Management 13FNEW+880 sh
2026-05-15Gotham Asset Management 13FTRIM−138,986 sh
2026-05-14Caxton Associates 13FTRIM−10,297 sh

7 newest rows · every row dates by its filing date: a disclosure's, or the 13F's for the quarter · a 13F row is a quarter-end snapshot, not a trade

14 members of Congress disclosed WDC — the congressional view ↗

A 13F is a quarterly, long-only snapshot filed up to 45 days late — not current holdings. what a 13F covers ↗

13F reports cover LONG positions in Section 13(f) securities (US exchange-traded equities plus reportable options, warrants, certain convertibles) held by managers with at least $100M in such securities — so managers below that threshold are absent entirely. No short positions, no cash, no non-13(f) assets — not a full portfolio, and not a census of institutional ownership.

Positions are quarter-end snapshots filed up to 45 days late — not current holdings. A position may have been changed or closed before you ever see it, and is older still by however long ago that quarter ended.

Values are the manager's stated market value at quarter-end in era-dependent units (whole dollars for form versions effective 2023-01-03 onward, thousands before), normalized here to whole dollars with unit_basis carried on every record.

Affiliated managers may report the same position (otherManager), so one position can appear under more than one filer.

Positions under confidential treatment may be omitted until a later amendment discloses them.

These are disclosures, not investment advice (ARCHITECTURE.md §5.2 / M2-CONTRACT §5).