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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
31 Mar 2025
the date the book describes
Filed
5 Nov 2026
latest of these filings; the earliest 13 May 2025
Managers listing it
17
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q4 2024 and Q1 2025; 13 listed it in both
Shares listed
56,638,072
combined, among listed positions
Reported value
$2.3bn
combined, at the quarter end

Among the 95 comparable managers: 9 buyers (opened or added shares) and 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing WDC in Q1 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2024, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

17 of 17 holders

ActionFiling
Fidelity (FMR LLC)27,541,409$1.1bn0.07%Added+3,974,4985 Nov 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc5,503,204$222munder 0.1%Trimmed-3,530,60114 May 2025 (the filing on sec.gov)
Holocene Advisors LP5,104,553$206m0.60%Added+2,090,30215 May 2025 (the filing on sec.gov)
Citadel Advisors LLC3,896,932$158munder 0.1%Added+1,008,69115 May 2025 (the filing on sec.gov)
AllianceBernstein LP2,926,051$118munder 0.1%Trimmed-367,55115 May 2025 (the filing on sec.gov)
Elliott Investment Management LP2,250,000$91m0.60%Held015 May 2025 (the filing on sec.gov)
Balyasny Asset Management LLC2,242,487$91m0.15%Addedn.a.15 May 2025 (the filing on sec.gov)
Sachem Head Capital Management LP1,845,000$75m2.99%Trimmed-1,122,90015 May 2025 (the filing on sec.gov)
Squarepoint Ops LLC1,685,206$68m0.08%Trimmed-298,96527 Aug 2025 (the filing on sec.gov)
Freestone Grove Partners LP1,009,697$41m0.42%Trimmed-146,59215 May 2025 (the filing on sec.gov)
Glenview Capital Management LLC786,435$32m0.78%Added+87,61215 May 2025 (the filing on sec.gov)
Walleye Capital LLC679,609$27m0.12%Added+231,22614 May 2025 (the filing on sec.gov)
Two Sigma Investments LP591,918$24m0.05%Trimmed-197,96415 May 2025 (the filing on sec.gov)
Soros Fund Management LLC350,000$14m0.21%Newnew15 May 2025 (the filing on sec.gov)
Soroban Capital Partners LP151,072$6.1m0.09%Newnew15 May 2025 (the filing on sec.gov)
Quantbot Technologies LP60,116$2.4m0.08%Newnew13 May 2025 (the filing on sec.gov)
Maverick Capital Ltd14,383$582kunder 0.1%Trimmed-454,01115 May 2025 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2024 to Q1 2025, 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 →