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WDC · Western Digital Corp

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Market Cap
$159.20B
Shares
360.54M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 1,862
Total Value: $234,418,428,950
Total Shares: 367,262,387
Showing 1–100 of 1,954 holdings by value · page 1 of 20

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 1,862 13F filers · Δ vs Mar 31, 2026
Top Holder
9.0%
Sep 2023 → Jun 2026 · range 9.0% – 13.0%
−0.9 pts
Top 5
31.3%
Sep 2023 → Jun 2026 · range 31.3% – 39.3%
−2.9 pts
Top 10
49.8%
Sep 2023 → Jun 2026 · range 45.7% – 51.8%
+0.5 pts
HHI
319
Sep 2023 → Jun 2026 · range 314 – 431
Broadly held−25

Quarterly Activity

vs Mar 31, 2026
New
537
Increased
603
Decreased
606
Sold Out
105
Unchanged
116
Holder count: +432
Institutional value: +139.4%
Shares held: +1.4%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 1,954
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 106040 CUSIP 958102105 13F (30d) 975 filings 946 filers Visit website Investor relations