Western Digital Corp
WDC- Exchange
- Nasdaq
- Industry
- Computer Storage Devices
- SEC CIK
- 0000106040
In the last 90 days, Western Digital Corp insiders filed 0 open-market purchases and 9 sales; 1,852 institutions reported holding it in 13F filings for Q2 2026, worth $206.3B in total; Maverick Capital is the only superinvestor holding it.
Holders of 5% or more of WDC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Western Digital Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| FMR LLC | 13G/A | 7.00%24.4M shares | −2.50 ppfrom 9.50% | Feb 12, 20254 filings | Nov 5, 2025 | SEC |
| JPMorgan Chase & Co | 13G/A | 5.30%18.5M shares | −1.40 ppfrom 6.70% | Feb 12, 20252 filings | Apr 22, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
10 Schedule 13D and 13G filings on Western Digital Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 20262:16 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 10, 202612:39 PM ET | Managed Account Advisors LLC | 13G/A | 2.60%9.03M shares | −2.70 ppfrom 5.30%Below 5% | Dec 31, 2025 | SEC |
| Nov 13, 20258:28 PM ET | Managed Account Advisors LLC | 13G/A | 5.30%18.4M shares | −1.10 ppfrom 6.40% | Sep 30, 2025 | SEC |
| Nov 5, 202511:49 AM ET | FMR LLCand 1 other | 13G/A | 7.00%24.4M shares | −2.50 ppfrom 9.50% | Sep 30, 2025 | SEC |
| Aug 14, 20252:40 PM ET | Managed Account Advisors LLC | 13G | 6.40%22.2M shares | New | Jun 30, 2025 | SEC |
| Aug 6, 202512:19 PM ET | FMR LLCand 1 other | 13G/A | 9.50%33.2M shares | +1.40 ppfrom 8.10% | Jun 30, 2025 | SEC |
| May 12, 202510:20 AM ET | FMR LLCand 1 other | 13G/A | 8.10%28.1M shares | +1.20 ppfrom 6.90% | Mar 31, 2025 | SEC |
| Apr 22, 202512:01 PM ET | JPMorgan Chase & Co | 13G/A | 5.30%18.5M shares | −1.40 ppfrom 6.70% | Mar 31, 2025 | SEC |
| Feb 12, 20253:07 PM ET | JPMorgan Chase & Co | 13G/A | 6.70%23.3M shares | – | Dec 31, 2024 | SEC |
| Feb 12, 20259:34 AM ET | FMR LLCand 1 other | 13G/A | 6.90%24.0M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Western Digital Corp shares.
No Form 144 notices for Western Digital Corp are on file.