Western Digital Corporation (WDC)
Who owns Western Digital Corporation (WDC)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.3% of the shares are freely tradable; institutional investors hold 101.2%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Group Inc | 12.29 | 42,348,660 | -2.2 | 12/31/2025 |
| BlackRock Inc | 10.38 | 35,769,222 | +0.7 | 03/31/2026 |
| FMR Inc | 9.17 | 31,623,418 | -6.4 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.39 | 22,034,861 | +0.0 | 03/31/2026 |
| JPMorgan Chase & Co | 5.08 | 17,512,148 | +22.5 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.98 | 17,172,653 | +0.0 | 03/31/2026 |
| State Street Corp | 4.49 | 15,465,766 | -1.5 | 03/31/2026 |
| Capital World Investors | 3.45 | 11,880,038 | +1,017.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.75 | 9,477,201 | +2.1 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 3.13 | 10,802,245 | +0.3 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 28. Jul 2026 | Cole Martin I | Director | Sell | 160 | 462.30 | 73,968 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 199 | 461.23 | 91,786 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 248 | 459.97 | 114,073 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 529 | 458.96 | 242,788 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 328 | 457.45 | 150,043 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 312 | 456.52 | 142,433 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 304 | 455.55 | 138,486 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 128 | 454.44 | 58,169 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 144 | 453.27 | 65,271 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 106 | 452.12 | 47,925 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 70 | 451.30 | 31,591 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 39 | 449.42 | 17,527 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 41 | 448.46 | 18,387 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 96 | 440.96 | 42,332 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 118 | 438.08 | 51,694 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 154 | 436.89 | 67,282 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 112 | 433.84 | 48,590 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 38 | 432.20 | 16,424 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 103 | 430.45 | 44,336 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 93 | 429.12 | 39,908 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 115 | 431.41 | 49,612 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 32 | 465.12 | 14,884 |
| 28. Jul 2026 | Cole Martin I | Director | Sell | 64 | 439.38 | 28,120 |
| 21. Jul 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell | 808 | 529.63 | 427,941 |
| 20. Jul 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 1,309 | 487.42 | 638,033 |
| 20. Jul 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 13 | 0.00 | – |
| 21. Apr 2026 | Cynthia L Tregillis | Insider | Sell | 363 | 377.09 | 136,884 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.