Latest Period
Q1 2026
Security Snapshot
WESTERN DIGITAL CORP - Common Stock (WDC) Institutional Ownership
CUSIP: 958102105
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
1,388
Shares (Excl. Options)
327,497,028
Price
$270.49
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- Security type / class
- Equity / Common Stock
- Symbol
- WDC on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 327,497,028
- Total 13F value
- $88,011,668,748
- Portfolio coverage rank
- 0.04%
- Share change
- -7,038,062
- Value change
- -$1,171,923,636
- Number of holders
- 1,388
- Shares outstanding
- 339,157,770
- SEC-reported price per share
- $494.09
- Insider filing price
- $494.09
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- WDC - WESTERN DIGITAL CORP - Common Stock is tracked under CUSIP 958102105.
- 1388 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 1,154 to 1,388 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $57,482,921,997 to $88,011,668,748.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 1388 institutions filings for Q1 2026.
Security key
958102105
Latest holder period
Q1 2026
13F holders
1,388
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
WDC full holder history
WESTERN DIGITAL CORP SEC filings
WESTERN DIGITAL CORP company facts
WESTERN DIGITAL CORP insider transactions
WESTERN DIGITAL CORP 13D/G history
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 958102105:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
WDC
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| FMR LLC | 10% | +44% | $5,937,572,262 | +$1,733,198,306 | 34,466,664 | +41% | FMR LLC | 31 Dec 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC | 7.5% | $6,871,235,019 | 25,402,917 | Vanguard Capital Management | 31 Mar 2026 | |||
| JPMORGAN CHASE & CO | 5.3% | -20% | $751,336,970 | -$195,562,309 | 18,496,725 | -21% | JPMORGAN CHASE & CO. | 31 Mar 2025 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.1% | $4,657,060,511 | 17,217,120 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| MANAGED ACCOUNT ADVISORS LLC | 2.6% | -54% | $1,914,895,075 | -$1,977,932,052 | 9,026,563 | -51% | MANAGED ACCOUNT ADVISORS LLC | 31 Dec 2025 |
As of 31 Mar 2026, 1,388 institutional investors reported holding 327,497,028 shares of WESTERN DIGITAL CORP - Common Stock (WDC). This represents 97% of the company’s total 339,157,770 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
69%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 11% | 35,769,222 | +0.73% | 0.17% | $9,675,216,961 |
| FMR LLC | 9.3% | 31,623,418 | -6.4% | 0.45% | $8,553,818,190 |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.5% | 22,034,861 | 0% | 0.15% | $5,960,209,553 |
| JPMORGAN CHASE & CO | 5.2% | 17,512,148 | +22% | 0.3% | $4,407,282,917 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.1% | 17,172,653 | 0% | 0.24% | $4,645,030,910 |
| STATE STREET CORP | 4.6% | 15,465,766 | -1.5% | 0.14% | $4,183,335,045 |
| Capital World Investors | 3.5% | 11,880,038 | +1017% | 0.44% | $3,213,393,640 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.8% | 9,477,201 | +2.1% | 0.16% | $2,556,976,225 |
| BANK OF AMERICA CORP /DE/ | 2.5% | 8,489,612 | -30% | 0.17% | $2,296,355,109 |
| MORGAN STANLEY | 2.3% | 7,939,106 | -11% | 0.13% | $2,147,449,787 |
| WCM INVESTMENT MANAGEMENT, LLC | 1.9% | 6,561,810 | -1.9% | 3.8% | $1,651,410,723 |
| AMERIPRISE FINANCIAL INC | 1.7% | 5,762,533 | -32% | 0.36% | $1,558,708,820 |
| Invesco Ltd. | 1.6% | 5,530,864 | +1.4% | 0.23% | $1,496,043,406 |
| GOLDMAN SACHS GROUP INC | 1.6% | 5,406,883 | +19% | 0.19% | $1,462,507,915 |
| UBS Group AG | 1.2% | 4,182,454 | -8.1% | 0.2% | $1,131,311,982 |
| NORTHERN TRUST CORP | 1.1% | 3,606,563 | -1.8% | 0.13% | $975,539,227 |
| AQR CAPITAL MANAGEMENT LLC | 1% | 3,459,565 | +16% | 0.42% | $913,048,411 |
| Capital Research Global Investors | 0.98% | 3,309,625 | 0.14% | $895,126,243 | |
| Amundi | 0.9% | 3,058,867 | +27% | 0.23% | $827,392,935 |
| Nuveen, LLC | 0.87% | 2,959,245 | -35% | 0.22% | $800,446,180 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.86% | 2,902,748 | +3.3% | 0.16% | $785,164,308 |
| D. E. Shaw & Co., Inc. | 0.79% | 2,688,230 | -53% | 0.57% | $727,139,332 |
| FRED ALGER MANAGEMENT, LLC | 0.78% | 2,659,835 | -0.91% | 3.2% | $719,458,769 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 0.78% | 2,646,484 | +1.3% | 0.08% | $715,849,000 |
| Bank of New York Mellon Corp | 0.74% | 2,508,752 | +21% | 0.12% | $678,592,300 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 327,497,028 | $88,011,668,748 | -$1,171,923,636 | $270.49 | 1,388 |
| 2025 Q4 | 333,774,847 | $57,482,921,997 | -$1,908,057,595 | $172.27 | 1,154 |
| 2025 Q3 | 345,386,023 | $41,434,144,320 | -$1,537,382,736 | $120.06 | 951 |
| 2025 Q2 | 364,816,124 | $23,342,198,786 | +$1,123,278,161 | $63.99 | 739 |
| 2025 Q1 | 351,757,551 | $14,201,107,313 | +$258,623,965 | $40.43 | 647 |
| 2024 Q4 | 335,743,943 | $20,029,326,966 | +$599,750,977 | $59.63 | 700 |
| 2024 Q3 | 322,471,092 | $22,018,682,057 | -$1,008,797,716 | $68.29 | 686 |
| 2024 Q2 | 335,036,923 | $25,388,750,160 | +$2,493,792,892 | $75.77 | 744 |
| 2024 Q1 | 302,784,405 | $20,660,480,854 | +$263,410,433 | $68.24 | 665 |
| 2023 Q4 | 300,791,229 | $15,743,822,656 | +$914,253,649 | $52.37 | 598 |
| 2023 Q3 | 278,402,284 | $12,698,222,739 | +$450,082,597 | $45.63 | 529 |
| 2023 Q2 | 269,546,144 | $10,228,100,761 | -$92,478,558 | $37.93 | 528 |
| 2023 Q1 | 271,661,416 | $10,224,754,796 | -$121,799,785 | $37.67 | 527 |
| 2022 Q4 | 272,718,419 | $8,610,305,207 | +$27,933,930 | $31.55 | 512 |
| 2022 Q3 | 274,725,203 | $8,957,141,441 | +$223,285,442 | $32.55 | 551 |
| 2022 Q2 | 266,628,361 | $11,948,522,958 | +$687,443,720 | $44.83 | 610 |
| 2022 Q1 | 251,026,251 | $12,464,621,991 | -$180,500,144 | $49.65 | 618 |
| 2021 Q4 | 252,121,402 | $16,422,593,268 | +$331,163,722 | $65.21 | 670 |
| 2021 Q3 | 247,206,015 | $13,949,703,199 | +$44,551,145 | $56.44 | 603 |
| 2021 Q2 | 246,002,769 | $17,496,401,435 | +$272,251,173 | $71.17 | 665 |
| 2021 Q1 | 242,159,240 | $16,158,856,504 | +$278,189,015 | $66.75 | 648 |
| 2020 Q4 | 238,312,740 | $13,183,437,197 | +$213,782,076 | $55.39 | 601 |
| 2020 Q3 | 235,361,779 | $8,603,594,713 | -$112,407,229 | $36.55 | 535 |
| 2020 Q2 | 237,021,681 | $10,456,943,596 | -$185,522,175 | $44.15 | 590 |
| 2020 Q1 | 241,122,876 | $10,034,197,556 | -$399,716,212 | $41.62 | 596 |