Parallax Volatility Advisers, L.P.
Position in STX — Seagate Technology Holdings plc
CIK 1521001
San Francisco, CA
Position in STX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$312,660
+$312,660 QoQ
Shares Held
324
Ownership
0.000%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#1,541
of 1,943 holders
Holding Since
Jun 2021
19 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in STX Over Time
Shares Held
Position Value (USD)
Derivatives in STX
reported options exposure · as of Jun 30, 2026CallValue
$0
CallShares
0
PutValue
$32,810,000
PutShares
34,000
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, 2026Parallax Volatility Advisers, L.P. holds $57,799,254 across 9 Computer Hardware names. STX ranks #9 (0.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | DELL |
Dell Technologies Inc.
|
51,200 | $22,090,752 | |
| 2 | SNDK |
Sandisk Corp
|
6,649 | $15,118,030 | |
| 3 | SMCI |
Super Micro Computer, Inc.
|
403,449 | $11,833,159 | |
| 4 | WDC |
Western Digital Corp
|
4,749 | $3,033,281 | |
| 5 | IONQ |
IonQ, Inc.
|
51,179 | $2,725,793 | |
| 6 | HPQ |
Hp Inc
|
47,165 | $1,034,800 | |
| 7 | RGTI |
Rigetti Computing, Inc.
|
44,165 | $853,267 | |
| 8 | P |
Everpure, Inc.
|
10,122 | $797,512 |
All Filings in STX
Export CSV
41 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $32,810,000 | 34,000 | Put | Sole | 2026-08-14 | |
| 2026-06-30 | $312,660 | 324 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $13,319,840 | 34,000 | Put | Sole | 2026-05-15 | |
| 2026-03-31 | $4,897,000 | 12,500 | Call | Sole | 2026-05-15 | |
| 2025-12-31 | $7,616,736 | 27,658 | Shares | Sole | 2026-02-17 | |
| 2025-12-31 | $8,261,700 | 30,000 | Put | Sole | 2026-02-17 | |
| 2025-09-30 | $8,238,494 | 34,900 | Put | Sole | 2025-11-14 | |
| 2025-09-30 | $2,950,750 | 12,500 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $14,633,831 | 61,992 | Shares | Sole | 2025-11-14 | |
| 2024-12-31 | $22,440,600 | 260,000 | Put | Sole | 2025-02-14 | |
| 2024-12-31 | $716,373 | 8,300 | Call | Sole | 2025-02-14 | |
| 2024-09-30 | $19,715,400 | 180,000 | Call | Sole | 2024-11-14 | |
| 2024-09-30 | $38,324,547 | 349,900 | Put | Sole | 2024-11-14 | |
| 2024-06-30 | $20,127,323 | 194,900 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $11,132,506 | 107,800 | Call | Sole | 2024-08-14 | |
| 2024-03-31 | $8,113,960 | 87,200 | Call | Sole | 2024-05-15 | |
| 2024-03-31 | $18,163,360 | 195,200 | Put | Sole | 2024-05-15 | |
| 2023-12-31 | $14,939,750 | 175,000 | Call | Sole | 2024-02-14 | |
| 2023-12-31 | $28,359,914 | 332,200 | Put | Sole | 2024-02-14 | |
| 2023-09-30 | $12,082,040 | 183,200 | Call | Sole | 2023-11-14 | |
| 2023-09-30 | $20,721,490 | 314,200 | Put | Sole | 2023-11-14 | |
| 2023-06-30 | $15,968,647 | 258,100 | Call | Sole | 2023-08-14 | |
| 2023-06-30 | $21,357,524 | 345,200 | Put | Sole | 2023-08-14 | |
| 2023-03-31 | $132 | 2 | Shares | Sole | 2023-05-15 | |
| 2023-03-31 | $20,510,424 | 310,200 | Put | Sole | 2023-05-15 | |
| 2023-03-31 | $17,958,192 | 271,600 | Call | Sole | 2023-05-15 | |
| 2022-12-31 | $23,948,072 | 455,200 | Put | Sole | 2023-02-27 | |
| 2022-12-31 | $40,057,254 | 761,400 | Call | Sole | 2023-02-27 | |
| 2022-09-30 | $60,660,908 | 1,139,600 | Call | Sole | 2022-11-21 | |
| 2022-09-30 | $27,253,760 | 512,000 | Put | Sole | 2022-11-21 | |
| 2022-06-30 | $47,136,112 | 659,800 | Call | Sole | 2022-08-17 | |
| 2022-06-30 | $14,052,248 | 196,700 | Put | Sole | 2022-08-17 | |
| 2022-03-31 | $34,908,170 | 388,300 | Put | Sole | 2022-05-16 | |
| 2022-03-31 | $58,974,400 | 656,000 | Call | Sole | 2022-05-16 | |
| 2021-12-31 | $87,503,010 | 774,500 | Put | Sole | 2022-02-14 | |
| 2021-12-31 | $54,309,486 | 480,700 | Call | Sole | 2022-02-14 | |
| 2021-09-30 | $14,284,212 | 173,100 | Call | Sole | 2021-11-15 | |
| 2021-09-30 | $14,651,508 | 177,551 | Shares | Sole | 2021-11-15 | |
| 2021-09-30 | $50,007,120 | 606,000 | Put | Sole | 2021-11-15 | |
| 2021-06-30 | $22,430,943 | 255,100 | Call | Sole | 2021-08-16 | |
| 2021-06-30 | $20,566,827 | 233,900 | Put | Sole | 2021-08-16 | |
| No filing history on record for this holder in this stock. | ||||||