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Walleye Trading LLC

Position in WDC — Western Digital Corp

CIK 1388391 NEW YORK, NY

Position in WDC

as of Mar 31, 2026 · filed May 11, 2026
Position Value
$55,852,398
+$40,088,315 QoQ
Shares Held
206,486
+125.6% QoQ
Ownership
0.060%
of shares outstanding
% of Portfolio
1.27%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in WDC Over Time

Shares Held

Position Value (USD)

Derivatives in WDC

reported options exposure · as of Mar 31, 2026
CallValue
$236,949,240
CallShares
876,000
PutValue
$219,475,586
PutShares
811,400

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Computer Hardware

Technology · as of Mar 31, 2026

Walleye Trading LLC holds $79,190,838 across 11 Computer Hardware names. WDC ranks #1 (70.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 WDC
Western Digital Corp
This page
206,486 $55,852,398

All Filings in WDC

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $236,949,240 876,000
2026-03-31 $55,852,398 206,486
2026-03-31 $219,475,586 811,400
2025-12-31 $15,764,083 91,508
2025-12-31 $243,141,878 1,411,400
2025-12-31 $282,436,665 1,639,500
2025-09-30 $163,833,876 1,364,600
2025-09-30 $180,582,246 1,504,100
2025-09-30 $5,557,817 46,292
2025-06-30 $4,543,162 70,998
2025-06-30 $84,837,942 1,325,800
2025-06-30 $76,180,095 1,190,500
2025-03-31 $66,863,134 1,653,800
2025-03-31 $49,029,461 1,212,700
2025-03-31 $22,596,771 558,911
2024-12-31 $56,037,768 1,243,300
2024-12-31 $44,355,158 984,100
2024-12-31 $18,741,936 415,824
2024-09-30 $15,351,767 297,414
2024-09-30 $54,219,022 1,050,400
2024-09-30 $60,583,459 1,173,700
2024-06-30 $82,688,447 1,443,800
2024-06-30 $72,391,049 1,264,000
2024-03-31 $47,566,799 922,200
2024-03-31 $50,589,369 980,800
2023-12-31 $33,591,236 848,600
2023-12-31 $13,850,546 349,900
2023-12-31 $3,842,052 97,060
2023-09-30 $15,434,185 447,500
2023-09-30 $16,551,655 479,900
2023-06-30 $3,624,280 126,415
2023-06-30 $8,684,052 302,900
2023-06-30 $8,698,386 303,400
2023-03-31 $9,663,804 339,400
2023-03-31 $10,804,411 379,459
2023-03-31 $19,771,790 694,400
2022-12-31 $5,481,301 229,850
2022-12-31 $14,317,918 600,400
2022-12-31 $8,971,354 376,200
2022-09-30 $5,756,558 233,976
2022-09-30 $17,003,271 691,100
2022-09-30 $6,261,514 254,500
2022-06-30 $27,169,073 801,800
2022-06-30 $9,989,327 294,800
2022-06-30 $12,087,086 356,708
2022-03-31 $34,623,609 922,600
2022-03-31 $5,302,748 141,300
2022-03-31 $12,706,969 338,597
2021-12-31 $48,367,786 981,300
2021-12-31 $760,931 15,438