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WDC in the 13F filings

Western Digital Corp · CUSIP 958102105

Sector · Technology hardware and equipmentTheme · AI infrastructure and semiconductors· L3VLUP-defined
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
42
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 29 listed it in both
Shares listed
75,069,362
combined, among listed positions
Reported value
$47.7bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 18 buyers (opened or added shares) and 26 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -3,238,423.

Managers listing WDC in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

42 of 42 holders

ActionFiling
Fidelity (FMR LLC)25,983,645$16.6bn0.72%Trimmed-5,639,77313 Aug 2026 (the filing on sec.gov)
Capital World Investors16,598,211$10.6bn1.25%Added+4,718,17312 Aug 2026 (the filing on sec.gov)
Invesco Ltd14,435,741$9.2bn0.73%Added+1,789,32014 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC2,940,948$1.9bn0.65%Trimmed-518,61714 Aug 2026 (the filing on sec.gov)
Capital Research Global Investors2,816,570$1.8bn0.25%Trimmed-493,05512 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc2,075,801$1.3bn0.13%Trimmed-570,68314 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.1,901,787$1.2bn0.58%Trimmed-786,44314 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC1,052,246$672m0.06%Added+1,017,74014 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP863,206$551m0.10%Added+830,15714 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC657,878$420munder 0.1%Added+392,0102 Sep 2026 (the filing on sec.gov)
Neuberger Berman Group LLC621,485$397m0.26%Added+165,24027 Oct 2026 (the filing on sec.gov)
Renaissance Technologies LLC537,473$343m0.47%Trimmed-608,66013 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC532,596$340m0.40%Trimmed-97,29013 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP515,710$329munder 0.1%Trimmed-53,11814 Aug 2026 (the filing on sec.gov)
Whale Rock Capital Management LLC400,687$256m2.05%Trimmed-11,31914 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP400,306$256m0.20%Trimmed-531,01713 Aug 2026 (the filing on sec.gov)
Millennium Management LLC351,962$225m0.08%Added+74,30914 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP587,816$159m0.05%Trimmed-175,26414 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC201,783$129m0.14%Trimmed-56,31714 Aug 2026 (the filing on sec.gov)
Voloridge Investment Management LLC200,000$128m0.54%Newnew14 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP183,267$117m0.05%Newnew13 Aug 2026 (the filing on sec.gov)
MFS Investment Management178,373$115munder 0.1%Trimmed-7,1433 Aug 2026 (the filing on sec.gov)
Bridgewater Associates LP172,415$110m0.45%Trimmed-76,62414 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC156,483$100m0.12%Trimmed-460,07614 Aug 2026 (the filing on sec.gov)
Verition Fund Management LLC93,205$60m0.30%Added+56,94214 Aug 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (2)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
21 in Q3 2024 to 38 in Q2 2026

Tracked managers listing it, at least.

0102030402014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
WDC by quarter
QuarterHoldersReported valueBuyersSellers
Q2 201312$710mn.a.n.a.
Q3 201311$806mn.a.n.a.
Q4 201316$1.3bnn.a.n.a.
Q1 201415$1.7bnn.a.n.a.
Q2 201415$1.9bnn.a.n.a.
Q3 201419$2.4bnn.a.n.a.
Q4 201419$2.7bnn.a.n.a.
Q1 201520$2.0bnn.a.n.a.
Q2 201520$2.0bnn.a.n.a.
Q3 201521$2.6bnn.a.n.a.
Q4 201519$2.2bnn.a.n.a.
Q1 201614$2.1bnn.a.n.a.
Q2 201618$1.8bnn.a.n.a.
Q3 201618$1.7bnn.a.n.a.
Q4 201619$1.7bnn.a.n.a.
Q1 201720$2.5bnn.a.n.a.
Q2 201716$2.9bnn.a.n.a.
Q3 201720$3.5bnn.a.n.a.
Q4 201719$3.4bnn.a.n.a.
Q1 201824$4.0bnn.a.n.a.
Q2 201820$2.7bnn.a.n.a.
Q3 201814$1.2bnn.a.n.a.
Q4 201814$504mn.a.n.a.
Q1 201914$1.1bnn.a.n.a.
Q2 201912$1.6bnn.a.n.a.
Q3 201915$2.5bnn.a.n.a.
Q4 201916$2.0bnn.a.n.a.
Q1 202014$901mn.a.n.a.
Q2 20209$963mn.a.n.a.
Q3 202010$336mn.a.n.a.
Q4 202012$799mn.a.n.a.
Q1 202117$1.4bnn.a.n.a.
Q2 202117$1.6bnn.a.n.a.
Q3 202110$749mn.a.n.a.
Q4 202117$1.3bnn.a.n.a.
Q1 202214$726mn.a.n.a.
Q2 202212$878mn.a.n.a.
Q3 202211$833mn.a.n.a.
Q4 202210$1.2bnn.a.n.a.
Q1 202314$1.8bnn.a.n.a.
Q2 202313$1.7bnn.a.n.a.
Q3 202316$2.7bnn.a.n.a.
Q4 202324$4.0bn205
Q1 202428$4.4bn1315
Q2 202431$6.0bn1516
Q3 202421$3.9bn1114
Q4 202422$3.5bn1110
Q1 202517$2.3bn99
Q2 202521$4.5bn1211
Q3 202531$7.7bn2113
Q4 202524$11.6bn1327
Q1 202630$20.7bn2319
Q2 202638$47.7bn1826

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

WDC and NVDA →WDC and AVGO →WDC and MU →Choose a stock to compare with WDC →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own WDC, latest filings →Back to the 13F Explorer →