Western Digital WDC
$263.78 −$3.85 (-1.44%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $265.95 +0.82%
Open$287.00
Prev close$267.63
Day range$258.61 – $288.00
Volume12.13M
Market cap$98.74B
P/E (TTM)10.2
Dividend yield0.21%
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership88.0%-8.75 pts vs. prior quarter
Institutions holding2,119-51 vs. prior quarter
Insider trades (recent)10 buys / 33 sellsNet selling
Short interest5.20% of floatDays to cover 1.9 · as of 15 Oct 2026
Short-sale volume share5.7%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: −$44.02M (11 inflow days, 9 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 31.8% of shares outstanding.
Largest holders
By investor type
Reported short interest has fallen from 7.14% to 5.20% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Capital Research | Mutual Fund | 2026/Q3 | +6,079,627 | 5.7% |
| Exchange Traded Concepts, LLC | Mutual Fund | 2026/Q3 | +1,738,509 | 0.5% |
| Invesco Ltd. | Mutual Fund | 2026/Q3 | +1,540,277 | 0.7% |
| Jane Street Group, LLC | Private Company | 2026/Q3 | +1,017,740 | 0.3% |
| Qube Research & Technologies Ltd | Mutual Fund | 2026/Q3 | +915,929 | 0.2% |
| Teachers Insurance and Annuity Association-College Retirement Equities Fund | Mutual Fund | 2026/Q3 | +911,762 | 1.0% |
| Wellington Management Group | Mutual Fund | 2026/Q3 | +830,157 | 0.2% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +810,849 | 4.3% |
| Tairen Capital Limited | Hedge Fund | 2026/Q3 | +699,180 | 0.4% |
| Trivest Advisors Ltd | Hedge Fund | 2026/Q3 | +637,600 | 0.3% |
| Clear Street LLC | Private Company | 2026/Q3 | +577,142 | 0.2% |
| Vanguard Capital Management, LLC | Mutual Fund | 2026/Q3 | +546,756 | 6.5% |
| Strategic Advisers LLC | Mutual Fund | 2026/Q3 | +476,817 | 0.5% |
| National Bank Investments Inc. | Mutual Fund | 2026/Q3 | +474,815 | 0.2% |
| Putnam LLC | Mutual Fund | 2026/Q3 | +446,858 | 0.1% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 20 Oct 2026 | Cynthia Tregillis | Executive Vice President | Automatic Disposition | -807 | $380.00 | 108,928 |
| 19 Oct 2026 | Cynthia Tregillis | Executive Vice President | Sale to Issuer | -1,295 | $364.32 | 108,928 |
| 19 Oct 2026 | Cynthia Tregillis | Executive Vice President | Derivative Exercise and Sale | -14 | $364.32 | 108,928 |
| 19 Sep 2026 | Brian Davis | Executive VP and Chief Sales & Marketing Officer | Sale to Issuer | -954 | $441.36 | 99,491 |
| 19 Sep 2026 | Brian Davis | Executive VP and Chief Sales & Marketing Officer | Derivative Exercise and Sale | -8 | $441.36 | 99,491 |
| 19 Sep 2026 | Tiang Yew Tan | Chief Executive Officer | Sale to Issuer | -1,034 | $441.36 | 587,113 |
| 19 Sep 2026 | Tiang Yew Tan | Chief Executive Officer | Derivative Exercise and Sale | -56 | $441.36 | 587,113 |
| 16 Sep 2026 | Tunc Doluca | Independent Director | Other Derivative Acquisition | +0 | – | 3 |
| 16 Sep 2026 | Matthew Massengill | Independent Director | Other Derivative Acquisition | +10 | – | 121 |
| 16 Sep 2026 | Stephanie Streeter | Lead Independent Director | Other Derivative Acquisition | +0 | – | 3 |
| 16 Sep 2026 | Brian Davis | Executive VP and Chief Sales & Marketing Officer | Other Derivative Acquisition | +16 | – | 174 |
| 16 Sep 2026 | Bruce Kiddoo | Independent Director | Other Derivative Acquisition | +0 | – | 3 |
| 16 Sep 2026 | Martin Cole | Independent Chairperson | Other Derivative Acquisition | +0 | – | 3 |
| 16 Sep 2026 | Kimberly Alexy | Independent Director | Other Derivative Acquisition | +0 | – | 3 |
| 16 Sep 2026 | Kris A. Sennesael | Chief Financial Officer | Other Derivative Acquisition | +46 | – | 491 |
| 16 Sep 2026 | Roxanne Oulman | Independent Director | Other Derivative Acquisition | +0 | – | 3 |
| 16 Sep 2026 | Ahmed Shihab | Chief Product Officer | Sale to Issuer | -5,094 | $423.87 | 158,608 |
| 16 Sep 2026 | Ahmed Shihab | Chief Product Officer | Derivative Exercise and Sale | -56 | $423.87 | 158,608 |
| 16 Sep 2026 | Ahmed Shihab | Chief Product Officer | Other Derivative Acquisition | +42 | – | 453 |
| 16 Sep 2026 | Brad Feller | Chief Accounting Officer | Other Derivative Acquisition | +4 | – | 17 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 19,446,763 | 5.2% | 1.9 |
| 30 Sep 2026 | 18,293,625 | 5.1% | 2.5 |
| 15 Sep 2026 | 17,280,387 | 4.8% | 3.1 |
| 31 Aug 2026 | 19,887,791 | 5.5% | 3.1 |
| 14 Aug 2026 | 20,281,115 | 5.9% | 2.3 |
| 31 Jul 2026 | 24,599,617 | 7.1% | 3.2 |
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