TWO SIGMA SECURITIES, LLC
Broker-DealerPosition in WDC — Western Digital Corp
CIK 1450144
NEW YORK, NY
Position in WDC
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$1,689,414
+$897,961 QoQ
Shares Held
2,645
-9.6% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.21%
of 13F equity value
Holder Rank
#846
of 1,836 holders
Holding Since
Mar 2020
22 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 Sep 30, 2024CallValue
$11,329,303
CallShares
219,486
PutValue
$11,622,949
PutShares
225,175
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, 2026TWO SIGMA SECURITIES, LLC holds $8,017,017 across 10 Computer Hardware names. WDC ranks #3 (21.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SNDK |
Sandisk Corp
|
1,471 | $3,344,656 | |
| 2 | HPQ |
Hp Inc
|
86,996 | $1,908,692 | |
| 3 | WDC |
Western Digital Corp
This page
|
2,645 | $1,689,414 | |
| 4 | SMCI |
Super Micro Computer, Inc.
|
14,682 | $430,623 | |
| 5 | P |
Everpure, Inc.
|
5,150 | $405,768 | |
| 6 | SSYS |
Stratasys Ltd.
|
13,194 | $112,940 | |
| 7 | CAN |
Canaan Inc.
|
219,831 | $63,091 | |
| 8 | NNDM |
Nano Dimension Ltd.
|
18,843 | $27,322 |
All Filings in WDC
Export CSV
49 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,689,414 | 2,645 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $791,453 | 2,926 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $532,142 | 3,089 | Shares | Sole | 2026-02-17 | |
| 2024-12-31 | $263,564 | 4,420 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $11,329,303 | 165,900 | Call | Sole | 2024-11-14 | |
| 2024-09-30 | $11,622,949 | 170,200 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $837,234 | 12,260 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $12,539,945 | 165,500 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $13,600,726 | 179,500 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $5,471,659 | 72,214 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $3,065,406 | 44,921 | Shares | Sole | 2024-05-15 | |
| 2024-03-31 | $4,592,548 | 67,300 | Call | Sole | 2024-05-15 | |
| 2024-03-31 | $4,114,868 | 60,300 | Put | Sole | 2024-05-15 | |
| 2023-12-31 | $994,873 | 18,997 | Shares | Sole | 2024-02-14 | |
| 2023-12-31 | $811,735 | 15,500 | Call | Sole | 2024-02-14 | |
| 2023-12-31 | $1,403,516 | 26,800 | Put | Sole | 2024-02-14 | |
| 2023-09-30 | $1,058,616 | 23,200 | Put | Sole | 2023-11-14 | |
| 2023-09-30 | $2,377,323 | 52,100 | Call | Sole | 2023-11-14 | |
| 2023-06-30 | $1,866,156 | 49,200 | Call | Sole | 2023-08-14 | |
| 2023-06-30 | $2,382,004 | 62,800 | Put | Sole | 2023-08-14 | |
| 2023-03-31 | $1,032,159 | 27,400 | Call | Sole | 2023-05-15 | |
| 2023-03-31 | $2,060,551 | 54,700 | Put | Sole | 2023-05-15 | |
| 2023-03-31 | $858,990 | 22,803 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $769,819 | 24,400 | Call | Sole | 2023-02-14 | |
| 2022-12-31 | $363,234 | 11,513 | Shares | Sole | 2023-02-14 | |
| 2022-12-31 | $1,148,419 | 36,400 | Put | Sole | 2023-02-14 | |
| 2022-09-30 | $703,080 | 21,600 | Call | Sole | 2022-11-14 | |
| 2022-09-30 | $642,667 | 19,744 | Shares | Sole | 2022-11-14 | |
| 2022-09-30 | $1,396,396 | 42,900 | Put | Sole | 2022-11-14 | |
| 2022-06-30 | $1,081,568 | 24,126 | Shares | Sole | 2022-08-15 | |
| 2022-06-30 | $385,537 | 8,600 | Call | Sole | 2022-08-15 | |
| 2022-06-30 | $1,049,021 | 23,400 | Put | Sole | 2022-08-15 | |
| 2022-03-31 | $730,201 | 14,707 | Shares | Sole | 2022-05-16 | |
| 2022-03-31 | $908,593 | 18,300 | Call | Sole | 2022-05-16 | |
| 2022-03-31 | $973,138 | 19,600 | Put | Sole | 2022-05-16 | |
| 2021-12-31 | $431,298 | 6,614 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $2,895,370 | 51,300 | Put | Sole | 2021-11-15 | |
| 2021-09-30 | $886,107 | 15,700 | Call | Sole | 2021-11-15 | |
| 2021-09-30 | $1,207,702 | 21,398 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $654,763 | 9,200 | Put | Sole | 2021-08-16 | |
| 2021-06-30 | $512,423 | 7,200 | Call | Sole | 2021-08-16 | |
| 2021-06-30 | $277,278 | 3,896 | Shares | Sole | 2021-08-16 | |
| 2020-12-31 | $341,036 | 6,157 | Shares | Sole | 2021-02-16 | |
| 2020-12-31 | $875,162 | 15,800 | Put | Sole | 2021-02-16 | |
| 2020-12-31 | $1,224,119 | 22,100 | Call | Sole | 2021-02-16 | |
| 2020-09-30 | $241,229 | 6,600 | Put | Sole | 2020-11-16 | |
| 2020-09-30 | $365,499 | 10,000 | Call | Sole | 2020-11-16 | |
| 2020-06-30 | $242,824 | 5,500 | Call | Sole | 2020-09-10 | |
| 2020-03-31 | $208,099 | 5,000 | Call | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||