Ticker · CUSIP 958102105

WDC

WESTERN DIGITAL CORP.
···Share
Holders (tracked)
25
Combined shares
31,016,943
Combined value
$4.89B
Last close
$361.69
Quarter
2025Q4
Tracked holders · last 8 quarters
+7 vs previous quarter over the last 8.
25202024Q12025Q4
Price is +129.2% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

27 events
  1. −2,407,840 shares · 2025Q4
    13F
  2. −3,923,998 shares · 2025Q4
    13F
  3. +44,090 shares · 2025Q4
    13F
  4. +1,404 shares · 2025Q4
    13F
  5. +1,951 shares · 2025Q4
    13F
  6. +1,228,661 shares · 2025Q4
    13F
  7. −971,646 shares · 2025Q4
    13F
  8. −914,620 shares · 2025Q4
    13F
  9. −750,790 shares · 2025Q4
    13F
  10. +20,376 shares · 2025Q4
    13F
  11. −156,229 shares · 2025Q4
    13F
  12. +4,578,446 shares · 2025Q4
    13F
  13. +11,991 shares · 2025Q4
    13F
  14. +511,971 shares · 2025Q3
    13F
  15. +857,489 shares · 2025Q3
    13F
  16. +93,606 shares · 2025Q3
    13F
  17. +795,387 shares · 2025Q3
    13F
  18. +6,718,155 shares · 2025Q3
    13F
  19. −1,139 shares · 2025Q3
    13F
  20. −134,323 shares · 2025Q3
    13F
  21. −600,570 shares · 2025Q3
    13F
  22. −2,250,000 shares · 2025Q2
    13F
  23. −961,765 shares · 2025Q3
    13F
  24. −3,448,666 shares · 2025Q3
    13F
  25. +51,963 shares · 2025Q3
    13F
  26. +946,929 shares · 2025Q3
    13F
  27. −63,611 shares · 2024Q3
    13F

Insider activity

No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of WDC…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
T. Rowe Price2016Q1$7.54+4698.3%$944.7M
Wellington Management2016Q1$62.60+477.7%$11.3M
Ray Dalio (Bridgewater Associates)2021Q1$82.89+336.3%$26.2M
Norges Bank (Norway SWF)2016Q1$89.16+305.7%$1.66B
Renaissance Technologies2016Q2$109.49+230.3%$359.0M
AQR Capital Management2016Q1$117.11+208.8%$1.08B
Ken Griffin (Citadel Advisors)2016Q1$123.08+193.9%$477.3M
Ken Griffin (Citadel Advisors)2016Q1$123.08+193.9%$477.3M
Ken Griffin (Citadel Advisors)2016Q1$123.08+193.9%$477.3M
Izzy Englander (Millennium Mgmt)2016Q1$144.92+149.6%$107.5M
Izzy Englander (Millennium Mgmt)2016Q1$144.92+149.6%$107.5M
Izzy Englander (Millennium Mgmt)2016Q1$144.92+149.6%$107.5M
Two Sigma Investments2016Q1$166.16+117.7%$112.2M
Two Sigma Investments2016Q1$166.16+117.7%$112.2M
Two Sigma Investments2016Q1$166.16+117.7%$112.2M
D.E. Shaw & Co.2016Q1$168.90+114.2%$2.06B
D.E. Shaw & Co.2016Q1$168.90+114.2%$2.06B
D.E. Shaw & Co.2016Q1$168.90+114.2%$2.06B
Paul Tudor Jones (Tudor Investment)2016Q1$171.68+110.7%$145.6M
Paul Tudor Jones (Tudor Investment)2016Q1$171.68+110.7%$145.6M
Paul Tudor Jones (Tudor Investment)2016Q1$171.68+110.7%$145.6M
Steve Cohen (Point72)2016Q4$171.73+110.6%$168.2M
Steve Cohen (Point72)2016Q4$171.73+110.6%$168.2M
Steve Cohen (Point72)2016Q4$171.73+110.6%$168.2M
Ken Fisher (Fisher Asset Mgmt)2025Q4$172.27+110.0%$4.3M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
Trimmed6
Exited0

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
22
$155.02B
2022Q2
22
$127.88B
2022Q3
22
$94.3M
2022Q4
21
$1.15B
2023Q1
20
$1.27B
2023Q2
17
$1.65B
2023Q3
21
$2.25B
2023Q4
17
$3.16B
2024Q1
20
$3.82B
2024Q2
21
$4.57B
2024Q3
22
$1.61B
2024Q4
21
$1.43B
2025Q1
22
$705.8M
2025Q2
21
$1.32B
2025Q3
18
$3.65B
2025Q4
25
$4.89B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2025-04-11Rob BresnahanSell$1K – $15KPDF ↗
2025-04-10Rob BresnahanSell (P)$1K – $15KPDF ↗

Who owns WDC

25 super-investors · 2025Q4
Tracked stake
31.02M
shares
Combined value
$4.89B
% of shares outstanding
shares-out unknown
Quarter action mix
New5Added4Trim16
#ManagerSharesValue
1D.E. Shaw & Co.5.70M$982M
2Ken Griffin
Citadel Advisors
5.28M$909M
3Norges Bank
Norway SWF
4.58M$789M
4Ken Griffin
Citadel Advisors
3.56M$613M
5AQR Capital Management2.97M$512M
6Ken Griffin
Citadel Advisors
1.32M$227M
7Renaissance Technologies992.5K$171M
8D.E. Shaw & Co.832.0K$143M
9Steve Cohen
Point72
465.0K$80M
10Paul Tudor Jones
Tudor Investment
402.6K$69M
11D.E. Shaw & Co.361.3K$62M
12Izzy Englander
Millennium Mgmt
317.2K$55M
13Two Sigma Investments310.3K$53M
14Steve Cohen
Point72
300.2K$52M
15Izzy Englander
Millennium Mgmt
297.2K$51M
16Paul Tudor Jones
Tudor Investment
211.4K$36M
17Steve Cohen
Point72
178.8K$31M
18Izzy Englander
Millennium Mgmt
160.3K$28M
19Ray Dalio
Bridgewater Associates
72.3K$12M
20Wellington Management31.2K$5M
21Two Sigma Investments26.2K$5M
22Two Sigma Investments24.3K$4M
23Ken Fisher
Fisher Asset Mgmt
12.0K$2M
24T. Rowe Price2.61M$450K
25Paul Tudor Jones
Tudor Investment
2.0K$336K

Recent moves

20 transactions
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