MILLENNIUM MANAGEMENT LLC
Position in STX — Seagate Technology Holdings plc
CIK 1273087
NEW YORK, NY
Position in STX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$610,911,585
+$512,862,284 QoQ
Shares Held
633,069
+152.9% QoQ
Ownership
0.279%
of shares outstanding
% of Portfolio
0.48%
of 13F equity value
Holder Rank
#52
of 1,934 holders
Holding Since
Jun 2021
21 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
$227,836,500
CallShares
236,100
PutValue
$214,326,500
PutShares
222,100
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, 2026MILLENNIUM MANAGEMENT LLC holds $2,261,131,041 across 24 Computer Hardware names. STX ranks #2 (27.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SNDK |
Sandisk Corp
|
366,129 | $832,478,491 | |
| 2 | STX |
Seagate Technology Holdings plc
This page
|
633,069 | $610,911,585 | |
| 3 | WDC |
Western Digital Corp
|
351,962 | $224,805,168 | |
| 4 | SMCI |
Super Micro Computer, Inc.
|
5,025,301 | $220,992,350 | |
| 5 | IONQ |
IonQ, Inc.
|
1,959,358 | $104,355,407 | |
| 6 | P |
Everpure, Inc.
|
910,346 | $71,726,161 | |
| 7 | HPQ |
Hp Inc
|
2,194,826 | $48,154,482 | |
| 8 | ANET |
Arista Networks, Inc.
|
208,862 | $35,481,476 |
All Filings in STX
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $227,836,500 | 236,100 | Call | Sole | 2026-08-14 | |
| 2026-06-30 | $610,911,585 | 633,069 | Shares | Sole | 2026-08-14 | |
| 2026-06-30 | $214,326,500 | 222,100 | Put | Sole | 2026-08-14 | |
| 2026-03-31 | $98,049,301 | 250,279 | Shares | Sole | 2026-05-15 | |
| 2026-03-31 | $66,755,904 | 170,400 | Put | Sole | 2026-05-15 | |
| 2026-03-31 | $95,354,384 | 243,400 | Call | Sole | 2026-05-15 | |
| 2025-12-31 | $31,119,070 | 113,000 | Put | Sole | 2026-02-17 | |
| 2025-12-31 | $67,140,082 | 243,800 | Call | Sole | 2026-02-17 | |
| 2025-12-31 | $22,466,591 | 81,581 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $44,875,006 | 190,100 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $183,226,467 | 776,186 | Shares | Sole | 2025-11-14 | |
| 2025-09-30 | $61,706,084 | 261,400 | Put | Sole | 2025-11-14 | |
| 2025-06-30 | $20,797,953 | 144,100 | Put | Sole | 2025-08-14 | |
| 2025-06-30 | $19,715,478 | 136,600 | Call | Sole | 2025-08-14 | |
| 2025-06-30 | $108,226,283 | 749,853 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $56,135,214 | 660,803 | Shares | Sole | 2025-05-15 | |
| 2025-03-31 | $19,249,670 | 226,600 | Put | Sole | 2025-05-15 | |
| 2025-03-31 | $1,486,625 | 17,500 | Call | Sole | 2025-05-15 | |
| 2024-12-31 | $97,986,448 | 1,135,285 | Shares | Sole | 2025-02-14 | |
| 2024-12-31 | $3,236,625 | 37,500 | Call | Sole | 2025-02-14 | |
| 2024-12-31 | $4,229,190 | 49,000 | Put | Sole | 2025-02-14 | |
| 2024-09-30 | $5,903,667 | 53,900 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $101,444,385 | 926,179 | Shares | Sole | 2024-11-14 | |
| 2024-09-30 | $4,600,260 | 42,000 | Call | Sole | 2024-11-14 | |
| 2024-06-30 | $94,331,361 | 913,444 | Shares | Sole | 2024-08-14 | |
| 2024-06-30 | $6,795,166 | 65,800 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $4,130,800 | 40,000 | Put | Sole | 2024-08-14 | |
| 2024-03-31 | $53,163,280 | 571,341 | Shares | Sole | 2024-05-15 | |
| 2024-03-31 | $4,699,025 | 50,500 | Call | Sole | 2024-05-15 | |
| 2024-03-31 | $7,220,680 | 77,600 | Put | Sole | 2024-05-15 | |
| 2023-12-31 | $7,811,355 | 91,500 | Put | Sole | 2024-02-14 | |
| 2023-12-31 | $2,492,804 | 29,200 | Call | Sole | 2024-02-14 | |
| 2023-09-30 | $11,237,880 | 170,400 | Put | Sole | 2023-11-14 | |
| 2023-09-30 | $18,462,768 | 279,951 | Shares | Sole | 2023-11-14 | |
| 2023-09-30 | $9,285,760 | 140,800 | Call | Sole | 2023-11-14 | |
| 2023-06-30 | $3,390,476 | 54,800 | Put | Sole | 2023-08-14 | |
| 2023-06-30 | $2,201,458 | 35,582 | Shares | Sole | 2023-08-14 | |
| 2023-06-30 | $1,169,343 | 18,900 | Call | Sole | 2023-08-14 | |
| 2023-03-31 | $1,005,024 | 15,200 | Put | Sole | 2023-05-15 | |
| 2023-03-31 | $271,092 | 4,100 | Call | Sole | 2023-05-15 | |
| 2022-12-31 | $9,674,979 | 183,900 | Put | Sole | 2023-02-14 | |
| 2022-12-31 | $2,151,749 | 40,900 | Call | Sole | 2023-02-14 | |
| 2022-12-31 | $8,353,468 | 158,781 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $8,298,823 | 155,905 | Shares | Sole | 2022-11-14 | |
| 2022-09-30 | $16,586,468 | 311,600 | Put | Sole | 2022-11-14 | |
| 2022-06-30 | $28,633,152 | 400,800 | Put | Sole | 2022-08-15 | |
| 2022-06-30 | $30,961,810 | 433,396 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $1,366,480 | 15,200 | Call | Sole | 2022-05-16 | |
| 2022-03-31 | $25,664,921 | 285,483 | Shares | Sole | 2022-05-16 | |
| 2022-03-31 | $36,930,920 | 410,800 | Put | Sole | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||