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SIMPLEX TRADING, LLC

Position in WDC — Western Digital Corp

CIK 1488542 CHICAGO, IL

Position in WDC

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$7,300,569
+$5,735,785 QoQ
Shares Held
11,430
+97.6% QoQ
Ownership
0.003%
of shares outstanding
% of Portfolio
0.23%
of 13F equity value
Holder Rank
#513
of 1,846 holders
Holding Since
Mar 2020
17 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

SIMPLEX TRADING, LLC holds $26,546,426 across 14 Computer Hardware names. WDC ranks #2 (27.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 WDC
Western Digital Corp
This page
11,430 $7,300,569

All Filings in WDC

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17 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $7,300,569 11,430
2026-03-31 $1,564,784 5,785
2025-12-31 $58,875,339 341,762
2025-03-31 $5,879,856 145,433
2024-12-31 $4,619,416 77,468
2024-09-30 $2,058,395 30,142
2024-06-30 $2,153,006 28,415
2023-03-31 $3,286,334 87,240
2022-03-31 $10,079,086 203,003
2021-12-31 $6,284,484 96,373
2021-09-30 $5,643 100
2021-06-30 $7,116 100
2021-03-31 $3,173,494 47,543
2020-12-31 $3,580,966 64,650
2020-09-30 $4,699,122 128,567
2020-06-30 $1,093,241 24,762
2020-03-31 $1,538,191 36,958