Position in WDC
as of Jun 30, 2026
· filed Aug 13, 2026
Position Value
$803,819,536
-$327,492,445 QoQ
Shares Held
1,258,485
-69.9% QoQ
Ownership
0.349%
of shares outstanding
% of Portfolio
0.17%
of 13F equity value
Holder Rank
#39
of 1,836 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 84%
Shared 0%
None 16%
Common Shares in WDC Over Time
Shares Held
Position Value (USD)
Derivatives in WDC
reported options exposure · as of Jun 30, 2026CallValue
$215,705,963
CallShares
337,716
PutValue
$50,905,984
PutShares
79,700
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, 2026UBS Group AG holds $7,366,468,410 across 38 Computer Hardware names. WDC ranks #5 (10.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SNDK |
Sandisk Corp
|
626,651 | $1,424,835,175 | |
| 2 | ANET |
Arista Networks, Inc.
|
6,300,948 | $1,070,405,040 | |
| 3 | DELL |
Dell Technologies Inc.
|
2,405,246 | $1,037,767,436 | |
| 4 | STX |
Seagate Technology Holdings plc
|
839,966 | $810,567,190 | |
| 5 | WDC |
Western Digital Corp
This page
|
1,258,485 | $803,819,536 | |
| 6 | SMCI |
Super Micro Computer, Inc.
|
19,739,932 | $580,103,703 | |
| 7 | LOGI |
Logitech International S.A.
|
5,463,842 | $513,819,700 | |
| 8 | IONQ |
IonQ, Inc.
|
7,896,730 | $420,579,837 |
All Filings in WDC
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $50,905,984 | 79,700 | Put | Defined | 2026-08-13 | |
| 2026-06-30 | $803,819,536 | 1,258,485 | Shares | Defined | 2026-08-13 | |
| 2026-06-30 | $215,705,963 | 337,716 | Call | Defined | 2026-08-13 | |
| 2026-03-31 | $27,184,245 | 100,500 | Put | Defined | 2026-05-05 | |
| 2026-03-31 | $1,131,311,981 | 4,182,454 | Shares | Defined | 2026-05-05 | |
| 2026-03-31 | $105,841,114 | 391,294 | Call | Defined | 2026-05-05 | |
| 2025-12-31 | $783,969,929 | 4,550,821 | Shares | Defined | 2026-01-29 | |
| 2025-12-31 | $39,294,787 | 228,100 | Call | Defined | 2026-01-29 | |
| 2025-12-31 | $49,407,036 | 286,800 | Put | Defined | 2026-01-29 | |
| 2025-09-30 | $880,039,317 | 7,329,996 | Shares | Defined | 2025-11-13 | |
| 2025-09-30 | $40,304,142 | 335,700 | Put | Defined | 2025-11-13 | |
| 2025-09-30 | $36,042,012 | 300,200 | Call | Defined | 2025-11-13 | |
| 2025-06-30 | $731,227,550 | 11,427,216 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $4,850,442 | 75,800 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $14,090,598 | 220,200 | Put | Defined | 2025-08-14 | |
| 2025-03-31 | $9,100,793 | 225,100 | Put | Defined | 2025-05-13 | |
| 2025-03-31 | $690,918,332 | 17,089,249 | Shares | Defined | 2025-05-13 | |
| 2025-03-31 | $2,308,553 | 57,100 | Call | Defined | 2025-05-13 | |
| 2024-12-31 | $15,420,314 | 258,600 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $17,531,217 | 294,000 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $482,396,788 | 8,089,835 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $21,784,494 | 319,000 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $431,117,949 | 6,313,051 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $22,139,602 | 324,200 | Put | Defined | 2024-11-14 | |
| 2024-06-30 | $8,652,941 | 114,200 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $489,325,634 | 6,458,034 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $22,799,211 | 300,900 | Put | Defined | 2024-08-14 | |
| 2024-03-31 | $13,961,892 | 204,600 | Call | Defined | 2024-05-13 | |
| 2024-03-31 | $25,194,186 | 369,200 | Put | Defined | 2024-05-13 | |
| 2024-03-31 | $414,228,464 | 6,070,176 | Shares | Defined | 2024-05-13 | |
| 2023-12-31 | $18,596,597 | 355,100 | Put | Defined | 2024-02-09 | |
| 2023-12-31 | $300,765,526 | 5,743,085 | Shares | Defined | 2024-02-09 | |
| 2023-12-31 | $26,467,812 | 505,400 | Call | Defined | 2024-02-09 | |
| 2023-09-30 | $258,315,018 | 5,661,078 | Shares | Defined | 2023-11-09 | |
| 2023-09-30 | $15,381,874 | 337,100 | Put | Defined | 2023-11-09 | |
| 2023-09-30 | $17,207,075 | 377,100 | Call | Defined | 2023-11-09 | |
| 2023-06-30 | $9,137,340 | 240,900 | Put | Defined | 2023-08-11 | |
| 2023-06-30 | $8,189,089 | 215,900 | Call | Defined | 2023-08-11 | |
| 2023-06-30 | $76,421,086 | 2,014,792 | Shares | Defined | 2023-08-11 | |
| 2023-03-31 | $34,810,887 | 924,100 | Put | Defined | 2023-05-12 | |
| 2023-03-31 | $141,146,036 | 3,746,904 | Shares | Defined | 2023-05-12 | |
| 2023-03-31 | $7,093,269 | 188,300 | Call | Defined | 2023-05-12 | |
| 2022-12-31 | $151,346,630 | 4,797,044 | Shares | Defined | 2023-02-08 | |
| 2022-12-31 | $21,135,330 | 669,900 | Put | Defined | 2023-02-08 | |
| 2022-12-31 | $7,937,974 | 251,600 | Call | Defined | 2023-02-08 | |
| 2022-09-30 | $133,071,924 | 4,088,227 | Shares | Defined | 2022-11-10 | |
| 2022-09-30 | $12,616,393 | 387,600 | Call | Defined | 2022-11-10 | |
| 2022-09-30 | $21,362,587 | 656,300 | Put | Defined | 2022-11-10 | |
| 2022-06-30 | $266,142,990 | 5,936,718 | Shares | Defined | 2022-08-10 | |
| 2022-06-30 | $3,407,079 | 76,000 | Call | Defined | 2022-08-10 | |
| No filing history on record for this holder in this stock. | ||||||