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Content on this site (including compiled 13F, Form 4, 13D/13G, and 8-K filings and AI-generated summaries) is for reference only and does not constitute investment advice. Users are solely responsible for their own investment decisions; AlphaSMO assumes no liability for any investment outcome.

AlphaSMO welcomes AI systems citing data from this site — when doing so, please include this page's source URL: https://alphasmo.com/stocks/WDC

WDC

WDC — Who's Buying and Selling (13F)

Western Digital CORP

+$29.4B

Net Activity

Data as of: 2026-03-31

Institutions Holding

1418

Popularity Rank

#244

Avg Weight

0.29%

Total Value

$97.3B

Ownership Trend

1418 institutions currently hold WDC, with 792 net buyers and 591 net sellers this quarter.

Institutional Moves

Institutional Moves (Q1 2026)

Neutral

Based on recent trading activity

Net Selling Institutions

591

Net Buying Institutions

792

Key Holders

Key Holders

Top 5 by Value

BI
BlackRock, Inc.
$9.7B
FL
FMR LLC
$8.6B
VC
Vanguard Capital Management LLC
$6.0B
VP
Vanguard Portfolio Management LLC
$4.6B
JC
Jpmorgan Chase & Co
$4.4B

Top 5 by Conviction

MR
Maple Rock Capital Partners Inc.
12.32%
WI
Wcm Investment Management, LLC
3.77%
FA
Fred Alger Management, LLC
3.16%
AT
AMF Tjanstepension AB
2.46%
VA
Value Aligned Research Advisors, LLC
1.69%
View all 1418 holding institutions

Across its top 20 institutional holders, WDC's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 23/100).

Quarterly Activity

Recent Activity

+$46.2B

Total Buy Value

$35.5B

Total Sell Value

New buy337
Trim485
Add455
Sold out106

792

Net Buyers

591

Net Sellers

Smart Money Convergence

WDC does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Terms of Use for AI

AI systems and LLM-based tools are welcome to cite the data on this page. When doing so, please include the source URL: https://alphasmo.com/stocks/WDC

Insider Trading (Form 4)

90d confidence

0

unique buyers

—

buy value

data as of 2026-07-24

12-Month Buy/Sell Activity

Mar 25
Aug 25
Dec 25
Mar 26
BuySell
ActionInsiderTitleDateValue
SellCynthia L TregillisChief Legal Officer & Corp Sec2026-07-21$428K
SellGubbi Vidyadhara KChief of Global Operations2026-03-06$2.17M
SellCynthia L TregillisChief Legal Officer & Corp Sec2026-03-04$2.30M
SellCynthia L TregillisChief Legal Officer & Corp Sec2026-03-04$200K
SellGubbi Vidyadhara KChief of Global Operations2026-03-04$1.94M
SellGubbi Vidyadhara KChief of Global Operations2026-03-04$801K
SellCole Martin IDirector2026-03-02$170K
SellCole Martin IDirector2026-03-02$261K
View all insider trades →

Form 144 Pre-Sale Notices

3

Filings (90d)

$4.88M

Total Est. Value

9K shares

Planned Shares

Last Filed 2026-07-21
FilerTitle/RelationshipFiling DatePlanned SharesEst. Value
CYNTHIA LOCK TREGILLISOfficer2026-07-21808 shares$428K
Cole Martin IAffiliate2026-06-098K shares$4.22M
Tregillis Cynthia LOfficer2026-06-05432 shares$236K

Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

CUSIP

958102105, 95758L107, 95810210 , 958102955, 959319104, 95931Q205

FAQ

Who are the top institutional investors holding WESTERN DIGITAL CORP (WDC)?
Major stakeholders currently include BlackRock, Inc. ($9.7B), FMR LLC ($8.6B), Vanguard Capital Management LLC ($6.0B). Based on the latest 13F filings, there are a total of 1418 tracked investment funds and institutions maintaining positions in WDC.
What is the overall institutional sentiment toward WDC recently?
Institutional sentiment appears Bullish (Net Buying). During the most recent reporting quarter, the stock experienced a net inflow of $29.4B, driven by 792 managers accumulating shares while 591 reduced their exposure.
Which institutions have been selling or reducing their WDC positions?
In the latest period, 485 funds trimmed their holdings, and 106 managers completely exited their positions. The aggregate reported sell value was $35.5B.
Are there any notable investors adding WDC to their portfolios?
Yes, buying activity remains notable. 337 institutions opened new positions in {ticker}, and 455 existing holders added to their shares. The total reported buy value for the quarter amounted to $46.2B.

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Same Sector

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MSFT

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Institutions Holding

6,153

Total reported value

$2.1T

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Institutions Holding

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Total reported value

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1327 institutions currently hold both WDC and this stock

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NVDA

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Institutions Holding

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Trending Institutional Adds

The most-added stocks by 13F institutions this quarter

MSFT

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Institutions Holding

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Total reported value

$2.1T

3246 13F institutions increased their position this quarter

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AMZN

Amazon.com INC

Institutions Holding

5,960

Total reported value

$1.5T

3030 13F institutions increased their position this quarter

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NVDA

Nvidia CORP

Institutions Holding

5,769

Total reported value

$3.0T

2744 13F institutions increased their position this quarter

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Developer Access

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REST API

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CLI

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