L3VLUP
ProSign in

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
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
41
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 23 listed it in both
Shares listed
78,307,785
combined, among listed positions
Reported value
$21.1bn
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: 23 buyers (opened or added shares) and 19 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +9,444,631.

Managers listing WDC in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

41 of 41 holders

ActionFiling
Fidelity (FMR LLC)31,623,418$8.6bn0.45%Trimmed-2,170,38315 May 2026 (the filing on sec.gov)
Invesco Ltd12,646,421$3.4bn0.33%Trimmed-490,07712 May 2026 (the filing on sec.gov)
Capital World Investors11,880,038$3.2bn0.44%Added+10,816,43113 May 2026 (the filing on sec.gov)
AQR Capital Management LLC3,459,565$913m0.42%Added+486,86215 May 2026 (the filing on sec.gov)
Capital Research Global Investors3,309,625$895m0.14%Newnew13 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.2,688,230$727m0.44%Trimmed-3,013,08815 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc2,646,484$716m0.08%Added+34,62815 May 2026 (the filing on sec.gov)
Soroban Capital Partners LP1,146,273$310m0.60%Held015 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC1,146,133$310m0.48%Added+153,60014 May 2026 (the filing on sec.gov)
Marshall Wace LLP931,323$252m0.25%Added+769,45515 May 2026 (the filing on sec.gov)
Holocene Advisors LP761,886$206m0.50%Trimmed-173,09615 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC629,886$170m0.24%Added+449,37013 May 2026 (the filing on sec.gov)
Point72 Asset Management LP623,944$169m0.22%Added+445,15915 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC616,559$167m0.22%Added+386,90315 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP568,828$154munder 0.1%Added+334,88715 May 2026 (the filing on sec.gov)
AllianceBernstein LP763,080$131munder 0.1%Trimmed-865,94715 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC456,245$123m0.09%Added+30,45627 Oct 2026 (the filing on sec.gov)
Whale Rock Capital Management LLC412,006$111m1.44%Newnew15 May 2026 (the filing on sec.gov)
Millennium Management LLC277,653$75munder 0.1%Trimmed-39,55215 May 2026 (the filing on sec.gov)
Citadel Advisors LLC265,868$72munder 0.1%Trimmed-1,053,89815 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC258,100$70m0.08%Trimmed-264,19015 May 2026 (the filing on sec.gov)
Bridgewater Associates LP249,039$67m0.30%Added+176,70015 May 2026 (the filing on sec.gov)
Rokos Capital Management LLP198,460$54m0.41%Newnew15 May 2026 (the filing on sec.gov)
MFS Investment Management185,516$50munder 0.1%Added+171,57414 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC113,743$31m0.22%Trimmed-95,23815 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 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 (7)

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 →