Position in WDC
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$420,199,835
+$348,285,201 QoQ
Shares Held
657,878
+147.4% QoQ
Ownership
0.182%
of shares outstanding
% of Portfolio
0.28%
of 13F equity value
Holder Rank
#66
of 1,836 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)
Derivatives in WDC
reported options exposure · as of Jun 30, 2026CallValue
$1,484,193,664
CallShares
2,323,700
PutValue
$3,690,332,544
PutShares
5,777,700
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 Jun 30, 2026CITADEL ADVISORS LLC holds $2,216,353,617 across 26 Computer Hardware names. WDC ranks #3 (19.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | STX |
Seagate Technology Holdings plc
|
755,495 | $729,052,675 | |
| 2 | ANET |
Arista Networks, Inc.
|
2,698,477 | $458,417,272 | |
| 3 | WDC |
Western Digital Corp
This page
|
657,878 | $420,199,835 | |
| 4 | DELL |
Dell Technologies Inc.
|
435,121 | $187,737,306 | |
| 5 | SNDK |
Sandisk Corp
|
67,432 | $153,322,161 | |
| 6 | SMCI |
Super Micro Computer, Inc.
|
3,542,512 | $103,901,876 | |
| 7 | P |
Everpure, Inc.
|
833,423 | $65,665,397 | |
| 8 | QBTS |
D-Wave Quantum Inc.
|
1,635,086 | $39,225,713 |
All Filings in WDC
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $3,690,332,544 | 5,777,700 | Put | Defined | 2026-08-14 | |
| 2026-06-30 | $1,484,193,664 | 2,323,700 | Call | Defined | 2026-08-14 | |
| 2026-06-30 | $420,199,835 | 657,878 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $962,457,518 | 3,558,200 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $547,444,711 | 2,023,900 | Call | Defined | 2026-05-15 | |
| 2026-03-31 | $71,914,634 | 265,868 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $612,816,071 | 3,557,300 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $227,356,088 | 1,319,766 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $909,378,876 | 5,278,800 | Put | Defined | 2026-02-17 | |
| 2025-09-30 | $447,536,376 | 3,727,606 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $494,887,320 | 4,122,000 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $644,253,966 | 5,366,100 | Put | Defined | 2025-11-14 | |
| 2025-06-30 | $122,611,239 | 1,916,100 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $223,561,863 | 3,493,700 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $224,963,435 | 3,515,603 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $157,552,960 | 3,896,932 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $222,029,431 | 5,491,700 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $72,790,172 | 1,800,400 | Put | Defined | 2025-05-15 | |
| 2024-12-31 | $172,225,785 | 2,888,241 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $273,481,028 | 4,586,300 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $116,469,298 | 1,953,200 | Put | Defined | 2025-02-14 | |
| 2024-09-30 | $130,529,415 | 1,911,400 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $108,407,567 | 1,587,460 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $243,644,892 | 3,567,800 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $202,578,837 | 2,673,600 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $179,491,700 | 2,368,900 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $359,019,997 | 4,738,283 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $395,263,424 | 5,792,259 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $84,747,184 | 1,241,900 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $195,261,772 | 2,861,400 | Call | Defined | 2024-05-15 | |
| 2023-12-31 | $77,334,821 | 1,476,700 | Put | Defined | 2024-02-14 | |
| 2023-12-31 | $76,926,335 | 1,468,900 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $361,319,315 | 6,899,353 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $34,802,004 | 762,700 | Put | Defined | 2023-11-14 | |
| 2023-09-30 | $19,807,984 | 434,100 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $240,650,092 | 5,273,944 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $17,170,916 | 452,700 | Call | Defined | 2023-08-14 | |
| 2023-06-30 | $23,755,566 | 626,300 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $59,074,060 | 1,557,449 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $43,237,676 | 1,147,800 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $31,051,153 | 824,293 | Shares | Defined | 2023-05-15 | |
| 2023-03-31 | $29,265,856 | 776,900 | Put | Defined | 2023-05-15 | |
| 2022-12-31 | $61,630,609 | 1,953,428 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $33,483,990 | 1,061,300 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $33,247,366 | 1,053,800 | Call | Defined | 2023-02-14 | |
| 2022-09-30 | $26,394,821 | 810,900 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $51,891,263 | 1,594,200 | Call | Defined | 2022-11-14 | |
| 2022-09-30 | $37,890,126 | 1,164,058 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $101,064,723 | 2,254,400 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $24,530,340 | 547,186 | Shares | Defined | 2022-08-15 | |
| No filing history on record for this holder in this stock. | ||||||