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PRIMECAP MANAGEMENT CO/CA/

Position in WDC — Western Digital Corp

CIK 763212 PASADENA, CA

Position in WDC

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$329,860,556
+$173,731,024 QoQ
Shares Held
516,440
-10.5% QoQ
Ownership
0.143%
of shares outstanding
% of Portfolio
0.20%
of 13F equity value
Holder Rank
#76
of 1,846 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in WDC Over Time

Shares Held

Position Value (USD)

Position in Computer Hardware

Technology · as of Jun 30, 2026

PRIMECAP MANAGEMENT CO/CA/ holds $1,226,330,245 across 6 Computer Hardware names. WDC ranks #2 (26.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 WDC
Western Digital Corp
This page
516,440 $329,860,556

All Filings in WDC

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $329,860,556 516,440
2026-03-31 $156,129,532 577,210
2025-12-31 $129,812,335 753,540
2025-09-30 $115,866,304 965,070
2025-06-30 $68,603,039 1,072,090
2025-03-31 $45,344,468 1,121,555
2024-12-31 $69,088,202 1,158,615
2024-09-30 $79,314,340 1,161,435
2024-06-30 $90,630,465 1,196,125
2024-03-31 $87,066,524 1,275,888
2023-12-31 $80,786,425 1,542,608
2023-09-30 $104,007,619 2,279,369
2023-06-30 $86,745,029 2,286,976
2023-03-31 $90,976,018 2,415,076
2022-12-31 $84,983,146 2,693,604
2022-09-30 $85,393,515 2,623,454
2022-06-30 $102,731,457 2,291,579
2022-03-31 $102,259,514 2,059,610
2021-12-31 $131,068,660 2,009,947
2021-09-30 $101,460,278 1,797,667
2021-06-30 $112,407,805 1,579,427
2021-03-31 $105,964,726 1,587,487
2020-12-31 $86,757,808 1,566,307
2020-09-30 $47,836,885 1,308,807
2020-06-30 $26,132,673 591,907
2020-03-31 $20,274,638 487,137