$WDC

$377.24 +$21.11 (5.93%) Live

$WDC Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 374.3M shares outstanding

Who owns WDC?

By type of holder

Institutions 86.2% Insiders 0.8% Everyone else 13.0%

Concentration Top 10 holders own 46.4%

BlackRock, Inc. 8.8% · FMR LLC 6.9%

Institutional ownership

86.2%

-3.2 pts vs last qtr

Institutional holders

1,845

+422 vs last qtr

Net shares bought

−12.0M

by institutions in Q2 2026

New / sold out

533 / 111

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Capital World Investors +4.7M
Norges Bank NEW +4.6M

Biggest sellers in Q2 2026

FMR LLC −5.6M
WCM Investment Management, LLC −4.9M

Who is planning to sell?

Notices of proposed sale, last 12 months

$78.1M

46 notices from 12 people

Shares covered

261.3K

0.07% of the company

Arranged in advance

65%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Irving Tan Officer 10b5-1 $25.3M
Vidyadhara K Gubbi Officer $12.9M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2017–FY2026

+29.4%

+2.90% a year

Each share's claim on the business

−22.7%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$3.9B vs $3.11B

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years77% 3–5 years1% 1–3 years7% Under 1 year15%

Quarterly turnover

12.8%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting WDC on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	33.0M	8.80%	−2.8M (−7.9%)	≤2021	0.3%
Shares held by quarter Peak holding35.8M (Q1'26) Change over 8 quarters+4.6M Share of the company8.800% BlackRock, Inc.'s full portfolio →
F FMR LLC	26.0M	6.94%	−5.6M (−17.8%)	≤2021	0.7%
Shares held by quarter Peak holding33.8M (Q4'25) Change over 8 quarters+7.0M Share of the company6.940% FMR LLC's full portfolio →

BlackRock, Inc.

33.0M

% of company

8.80%

Change vs last qtr

−2.8M (−7.9%)

Held since

≤2021

FMR LLC

26.0M

% of company

6.94%

Change vs last qtr

−5.6M (−17.8%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Western Digital Corp, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting WDC on Form N-PORT; together they hold 42.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$6.99B	10.9M	2.92%	0.30%	June 30, 2026
V5 Vanguard 500 Index Fund Vanguard Index Funds	$5.71B	8.9M	2.39%	0.34%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$6.99B

% of company

2.92%

% of the fund

0.30%

As of

June 30, 2026

Vanguard 500 Index Fund

Vanguard Index Funds

Position value

$5.71B

% of company

2.39%

% of the fund

0.34%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Western Digital Corp and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
GD Goeckeler David Insider	812.3K	0.22%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.220% Goeckeler David's insider activity →
TI Tan Irving Insider	796.1K	0.21%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.210% Tan Irving's insider activity →

Goeckeler David

Insider

812.3K

% of company

0.22%

Change vs last qtr

—

Held since

—

Tan Irving

Insider

796.1K

% of company

0.21%

Change vs last qtr

—

Held since

—

20 more holders behind a free account

See every insider and 5%+ holder of Western Digital Corp.

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