Duquesne Family Office LLC
Family OfficePosition in STX — Seagate Technology Holdings plc
CIK 1536411
New York, NY
Position in STX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$117,730,000
+$97,867,768 QoQ
Shares Held
122,000
+140.6% QoQ
Ownership
0.054%
of shares outstanding
% of Portfolio
2.81%
of 13F equity value
Holder Rank
#141
of 1,934 holders
Holding Since
Sep 2023
11 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 Mar 31, 2025CallValue
$20,940,175
CallShares
246,500
PutValue
$0
PutShares
0
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, 2026Duquesne Family Office LLC holds $197,083,177 across 2 Computer Hardware names. STX ranks #1 (59.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | STX |
Seagate Technology Holdings plc
This page
|
122,000 | $117,730,000 | |
| 2 | SNDK |
Sandisk Corp
|
34,900 | $79,353,177 |
All Filings in STX
Export CSV
14 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $117,730,000 | 122,000 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $19,862,232 | 50,700 | Shares | Defined | 2026-05-15 | |
| 2025-09-30 | $20,277,554 | 85,900 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $28,503,731 | 197,490 | Shares | Defined | 2025-08-15 | |
| 2025-03-31 | $18,644,571 | 219,477 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $20,940,175 | 246,500 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $134,995,399 | 1,564,076 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $43,974,945 | 509,500 | Call | Defined | 2025-02-14 | |
| 2024-09-30 | $179,669,616 | 1,640,369 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $28,806,390 | 263,000 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $181,267,559 | 1,755,278 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $133,897,368 | 1,438,983 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $180,652,139 | 2,116,108 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $60,347,085 | 915,043 | Shares | Defined | 2023-11-14 | |
| No filing history on record for this holder in this stock. | ||||||