No AI summary for this filing type
View Full Filing (SEC EDGAR)Western Digital CORP
$448.90-0.3%
+$117.5B
Net Activity
+95.26% total shares
Institutions Holding
1864
Popularity Rank
#164
Avg Weight
0.41%
Total Value
$238.7B
1864 institutions currently hold WDC, with 1131 net buyers and 697 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
697
Net Buying Institutions
1131
Top 5 by Value
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Across its top 20 institutional holders, WDC's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 6/100, avg. turnover score 37/100).
WDC ranks #164 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
WDC is a top-conviction position for Anther Capital Ltd — at 23.1% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in WDC belongs to BlackRock, Inc., but the position matters far more to Anther Capital Ltd, who has 23.1% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
BlackRock has added to its WDC position for two straight quarters, increasing it by $14.9B to reach $21.0B today.
Lsv Asset Management has trimmed its WDC position for two straight quarters, cutting it by $107.4M while still holding $20.9M.
WDC is down 0.3% today, but institutions show net buying of $117.5B this quarter — a divergence between today's price move and the underlying institutional flow.
WDC posted net income of $9.4B over the trailing twelve months.
+$41.3B
Total Buy Value
$30.6B
Total Sell Value
1131
Net Buyers
697
Net Sellers
WDC
Q2 2026
Top 5 Institutional Movers
Institutional Buying Collides With Insider Selling
Signal Basis
The Q2 2026 13F data shows strong institutional accumulation — net value change of +$117.5B, 1,122 net buyers versus 692 sellers, and 521 new positions against just 85 exits — yet Form 4 filings show zero insider purchases against 41 sells (~$11.1M) over the past 30 days, including roughly $8.9M in same-day sales by CEO Irving Tan.
Confirmation
Confirmation would come if the next quarterly 13F shows continued net accumulation alongside fresh insider buying rather than further executive sales.
Invalidation Risk
This neutral view is invalidated if insider selling accelerates or institutional holders rotate toward net distribution next quarter.
This game-theory analysis is AI-assisted and derived from institutional holders' SEC EDGAR filings, covering historical data only. For informational purposes, not investment advice — source filings linked below.
See the institutional 13F filings behind this signalWDC 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.
0
unique buyers
—
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | Stephanie A Streeter | 2026-09-01 | $728K |
| Sell | Stephanie A Streeter | 2026-08-31 | $894K |
| Sell | Stephanie A Streeter | 2026-08-31 | $897K |
| Sell | Cynthia L Tregillis | 2026-08-27 | $482K |
| Sell | Cynthia L Tregillis | 2026-08-26 | $215K |
| Sell | Cynthia L Tregillis | 2026-08-24 | $305K |
| Sell | Cynthia L Tregillis | 2026-08-21 | $112K |
| Sell | Irving Tan | 2026-08-11 | $1.09M |
| Action | Member | Trade Date | Amount |
|---|---|---|---|
| Buy | Alan Armstrong Senate | 2026-03-27 | $1K–$15K |
8
Filings (90d)
$14.89M
Total Est. Value
32K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| CYNTHIA LOCK TREGILLIS | 2026-08-27 | $482K |
| CYNTHIA LOCK TREGILLIS | 2026-08-26 | $215K |
| CYNTHIA LOCK TREGILLIS | 2026-08-24 | $305K |
| CYNTHIA LOCK TREGILLIS | 2026-08-21 | $112K |
| IRVING TAN | 2026-08-11 | $8.90M |
| CYNTHIA LOCK TREGILLIS | 2026-07-21 | $428K |
| Cole Martin I | 2026-06-09 | $4.22M |
| Tregillis Cynthia L | 2026-06-05 | $236K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| FMR LLC | 13G/A | 2026-08-06 | 7.2% |
| Vanguard Portfolio Management | 13G/A | 2026-07-31 | 3.6% |
3
Filings (14d)
No AI summary for this filing type
View Full Filing (SEC EDGAR)No AI summary for this filing type
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)958102105, 95758L107, 95810210 , 958102955, 959319104, 95931Q205
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