Capital World Investors
· Added
+$2.8B
Change
+10.8M
Date
Q1 2026
WD
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Capital World Investors
· Added
+$2.8B
Change
+10.8M
Date
Q1 2026
|
Capital World Investors | Added· Q1 2026 | +$2.8B | +10.8M | – | Q1 2026 | |||||
|
Norges
· Exited
−$1.2B
Change
−4.6M
Δ Own
−100.0%
Date
Q1 2026
|
Norges | Exited· Q1 2026 | −$1.2B | −4.6M | −100.0% | Q1 2026 | |||||
|
Bank of America Corp
· Reduced
−$929M
Change
−3.6M
Date
Q1 2026
|
Bank of America Corp | Reduced· Q1 2026 | −$929M | −3.6M | – | Q1 2026 | |||||
|
Capital Research Global Investors
· New
+$864M
Change
+3.3M
Date
Q1 2026
|
Capital Research Global Investors | New· Q1 2026 | +$864M | +3.3M | – | Q1 2026 | |||||
|
JPMorgan Chase & Co
· Added
+$840M
Change
+3.2M
Date
Q1 2026
|
JPMorgan Chase & Co | Added· Q1 2026 | +$840M | +3.2M | – | Q1 2026 | |||||
|
D. E. Shaw & Co., Inc.
· Reduced
−$787M
Change
−3.0M
Δ Own
−52.8%
Date
Q1 2026
|
D. E. Shaw & Co., Inc. | Reduced· Q1 2026 | −$787M | −3.0M | −52.8% | Q1 2026 | |||||
|
Ameriprise Financial Inc
· Reduced
−$720M
Change
−2.8M
Date
Q1 2026
|
Ameriprise Financial Inc | Reduced· Q1 2026 | −$720M | −2.8M | – | Q1 2026 | |||||
|
FMR LLC
· Reduced
−$567M
Change
−2.2M
Δ Own
−6.4%
Date
Q1 2026
|
FMR LLC | Reduced· Q1 2026 | −$567M | −2.2M | −6.4% | Q1 2026 | |||||
|
Nuveen, LLC
· Reduced
−$419M
Change
−1.6M
Date
Q1 2026
|
Nuveen, LLC | Reduced· Q1 2026 | −$419M | −1.6M | – | Q1 2026 | |||||
|
Value Aligned Research Advisors, LLC
· New
+$338M
Change
+1.3M
Date
Q1 2026
|
Value Aligned Research Advisors, LLC | New· Q1 2026 | +$338M | +1.3M | – | Q1 2026 | |||||
|
Dimensional
· Reduced
−$277M
Change
−1.1M
Date
Q1 2026
|
Dimensional | Reduced· Q1 2026 | −$277M | −1.1M | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Reduced
−$275M
Change
−1.1M
Δ Own
−79.9%
Date
Q1 2026
|
Citadel Advisors LLC | Reduced· Q1 2026 | −$275M | −1.1M | −79.9% | Q1 2026 | |||||
|
Morgan Stanley
· Reduced
−$263M
Change
−1.0M
Date
Q1 2026
|
Morgan Stanley | Reduced· Q1 2026 | −$263M | −1.0M | – | Q1 2026 | |||||
|
Maple Rock Capital Partners Inc.
· Reduced
−$256M
Change
−981K
Date
Q1 2026
|
Maple Rock Capital Partners Inc. | Reduced· Q1 2026 | −$256M | −981K | – | Q1 2026 | |||||
|
Alliancebernstein L.P.
· Reduced
−$226M
Change
−866K
Date
Q1 2026
|
Alliancebernstein L.P. | Reduced· Q1 2026 | −$226M | −866K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Tregillis Cynthia L.
· Officer
Sell
−$428K
|
Tregillis Cynthia L. | Officer | Sell | $529.63 | −808 | −$428K | 115K | −0.7% | Jul 21, 2026 | Jul 21, 2026 | |||||||||
|
Tregillis Cynthia L.
· Officer
2 operations
0
|
Tregillis Cynthia L. | Officer | 2 operations | – | 0 | – | 310 | – | Jul 20, 2026 | Jul 21, 2026 | |||||||||
|
Tregillis Cynthia L.
· Officer
Tax withholding or exercise payment (F)
-$638K
|
Tregillis Cynthia L. | Officer | Tax withholding or exercise payment (F) | $487.42 | -1K | -$638K | 115K | −1.1% | Jul 20, 2026 | Jul 21, 2026 | |||||||||
|
Tan Irving
· Director
2 operations
0
|
Tan Irving | Director | 2 operations | – | 0 | – | 887 | – | Jun 20, 2026 | Jun 22, 2026 | |||||||||
|
Tan Irving
· Director
Tax withholding or exercise payment (F)
-$813K
|
Tan Irving | Director | Tax withholding or exercise payment (F) | $746.23 | -1K | -$813K | 596K | −0.2% | Jun 20, 2026 | Jun 22, 2026 | |||||||||
|
Davis Brian Scott
· Officer
2 operations
-1
|
Davis Brian Scott | Officer | 2 operations | – | -1 | – | 190 | – | Jun 20, 2026 | Jun 22, 2026 | |||||||||
|
Davis Brian Scott
· Officer
Tax withholding or exercise payment (F)
-$717K
|
Davis Brian Scott | Officer | Tax withholding or exercise payment (F) | $746.23 | -961 | -$717K | 102K | −0.9% | Jun 20, 2026 | Jun 22, 2026 | |||||||||
|
Tregillis Cynthia L.
· Officer
Grant (A)
19
|
Tregillis Cynthia L. | Officer | Grant (A) | – | 19 | – | 323 | – | Jun 17, 2026 | Jun 22, 2026 | |||||||||
|
Tan Irving
· Director
Grant (A)
57
|
Tan Irving | Director | Grant (A) | – | 57 | – | 939 | – | Jun 17, 2026 | Jun 22, 2026 | |||||||||
|
Streeter Stephanie A.
· Director
Grant (A)
0
|
Streeter Stephanie A. | Director | Grant (A) | – | 0 | – | 2 | – | Jun 17, 2026 | Jun 22, 2026 | |||||||||
|
Shihab Ahmed Mohammed
· Officer
2 operations
-1
|
Shihab Ahmed Mohammed | Officer | 2 operations | – | -1 | – | 399 | – | Jun 17, 2026 | Jun 22, 2026 | |||||||||
|
Shihab Ahmed Mohammed
· Officer
Tax withholding or exercise payment (F)
-$3.7M
|
Shihab Ahmed Mohammed | Officer | Tax withholding or exercise payment (F) | $712.13 | -5K | -$3.7M | 160K | −3.1% | Jun 17, 2026 | Jun 22, 2026 | |||||||||
|
Shihab Ahmed Mohammed
· Officer
Grant (A)
28
|
Shihab Ahmed Mohammed | Officer | Grant (A) | – | 28 | – | 427 | – | Jun 17, 2026 | Jun 22, 2026 | |||||||||
|
Sennesael Kris
· Officer
Grant (A)
28
|
Sennesael Kris | Officer | Grant (A) | – | 28 | – | 464 | – | Jun 17, 2026 | Jun 22, 2026 | |||||||||
|
Oulman Roxanne
· Director
Grant (A)
0
|
Oulman Roxanne | Director | Grant (A) | – | 0 | – | 2 | – | Jun 17, 2026 | Jun 22, 2026 | |||||||||
N
A
M
G
A
A
1,380 reporting institutions disclosed WDC position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.