Position in WDC
as of Jun 30, 2026
· filed Aug 17, 2026
Position Value
$608,061
-$1,508,523 QoQ
Shares Held
952
-87.8% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#1,151
of 1,836 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 0%
Shared 100%
None 0%
Common Shares in WDC Over Time
Shares Held
Position Value (USD)
Derivatives in WDC
reported options exposure · as of Jun 30, 2026CallValue
$5,237,504
CallShares
8,200
PutValue
$37,684,480
PutShares
59,000
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, 2026CAPSTONE INVESTMENT ADVISORS, LLC holds $76,886,223 across 6 Computer Hardware names. WDC ranks #6 (0.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SNDK |
Sandisk Corp
|
19,435 | $44,189,942 | |
| 2 | SMCI |
Super Micro Computer, Inc.
|
374,289,574 | $29,419,825 | |
| 3 | DELL |
Dell Technologies Inc.
|
2,212 | $954,389 | |
| 4 | STX |
Seagate Technology Holdings plc
|
949 | $915,785 | |
| 5 | P |
Everpure, Inc.
|
10,131 | $798,221 | |
| 6 | WDC |
Western Digital Corp
This page
|
952 | $608,061 |
All Filings in WDC
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $5,237,504 | 8,200 | Call | Defined | 2026-08-17 | |
| 2026-06-30 | $37,684,480 | 59,000 | Put | Defined | 2026-08-17 | |
| 2026-06-30 | $608,061 | 952 | Shares | Defined | 2026-08-17 | |
| 2026-03-31 | $12,604,834 | 46,600 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $2,353,263 | 8,700 | Call | Defined | 2026-05-15 | |
| 2026-03-31 | $2,116,584 | 7,825 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $499,927 | 2,902 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $2,050,013 | 11,900 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $15,159,760 | 88,000 | Put | Defined | 2026-02-17 | |
| 2025-09-30 | $1,248,624 | 10,400 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $6,243,120 | 52,000 | Put | Defined | 2025-11-14 | |
| 2025-06-30 | $985,446 | 15,400 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $371,142 | 5,800 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $2,312,596 | 57,200 | Put | Sole | 2025-05-15 | |
| 2025-03-31 | $583,283 | 14,427 | Shares | Sole | 2025-05-15 | |
| 2025-03-31 | $2,619,864 | 64,800 | Call | Sole | 2025-05-15 | |
| 2024-12-31 | $4,048,876 | 67,900 | Call | Sole | 2025-02-14 | |
| 2024-12-31 | $4,108,506 | 68,900 | Put | Sole | 2025-02-14 | |
| 2024-12-31 | $121,585 | 2,039 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $710,215 | 10,400 | Call | Sole | 2024-11-14 | |
| 2024-09-30 | $3,107,192 | 45,500 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $184,792 | 2,706 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $3,470,268 | 45,800 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $833,470 | 11,000 | Call | Sole | 2024-08-14 | |
| 2024-03-31 | $823,860 | 12,073 | Shares | Sole | 2024-05-01 | |
| 2024-03-31 | $648,279 | 9,500 | Call | Sole | 2024-05-01 | |
| 2024-03-31 | $2,872,901 | 42,100 | Put | Sole | 2024-05-01 | |
| 2023-12-31 | $4,053,440 | 77,400 | Put | Sole | 2024-02-12 | |
| 2023-12-31 | $307,831 | 5,878 | Shares | Sole | 2024-02-12 | |
| 2023-12-31 | $1,146,903 | 21,900 | Call | Sole | 2024-02-12 | |
| 2023-09-30 | $611,442 | 13,400 | Call | Sole | 2023-11-13 | |
| 2023-09-30 | $2,359,071 | 51,700 | Put | Sole | 2023-11-13 | |
| 2023-06-30 | $1,445,133 | 38,100 | Put | Sole | 2023-08-10 | |
| 2023-06-30 | $322,215 | 8,495 | Shares | Sole | 2023-08-10 | |
| 2023-06-30 | $352,749 | 9,300 | Call | Sole | 2023-08-10 | |
| 2023-03-31 | $316,428 | 8,400 | Call | Sole | 2023-05-09 | |
| 2023-03-31 | $221,914 | 5,891 | Shares | Sole | 2023-05-09 | |
| 2023-03-31 | $1,062,295 | 28,200 | Put | Sole | 2023-05-09 | |
| 2022-12-31 | $233,469 | 7,400 | Put | Sole | 2023-02-10 | |
| 2022-12-31 | $152,607 | 4,837 | Shares | Sole | 2023-02-10 | |
| 2022-12-31 | $141,974 | 4,500 | Call | Sole | 2023-02-10 | |
| 2022-09-30 | $3,316,848 | 101,900 | Put | Sole | 2022-11-10 | |
| 2022-09-30 | $2,818,898 | 86,602 | Shares | Sole | 2022-11-10 | |
| 2022-09-30 | $113,925 | 3,500 | Call | Sole | 2022-11-10 | |
| 2022-06-30 | $1,859,592 | 41,481 | Shares | Sole | 2022-08-15 | |
| 2022-06-30 | $4,751,978 | 106,000 | Put | Sole | 2022-08-15 | |
| 2022-06-30 | $161,387 | 3,600 | Call | Sole | 2022-08-15 | |
| 2022-03-31 | $1,325,653 | 26,700 | Call | Sole | 2022-05-13 | |
| 2022-03-31 | $3,788,091 | 76,296 | Shares | Sole | 2022-05-13 | |
| 2022-03-31 | $11,076,901 | 223,100 | Put | Sole | 2022-05-13 | |
| No filing history on record for this holder in this stock. | ||||||