WELLINGTON MANAGEMENT GROUP LLP
Position in STX — Seagate Technology Holdings plc
CIK 902219
Boston, MA
Position in STX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$2,329,641,240
+$2,295,323,849 QoQ
Shares Held
2,414,136
+2655.9% QoQ
Ownership
1.07%
of shares outstanding
% of Portfolio
0.41%
of 13F equity value
Holder Rank
#16
of 1,934 holders
Holding Since
Jun 2021
20 quarters on record
Voting authority
Sole 0%
Shared 93%
None 7%
Common Shares in STX Over Time
Shares Held
Position Value (USD)
Derivatives in STX
reported options exposure · as of Dec 31, 2025CallValue
$0
CallShares
0
PutValue
$245,095
PutShares
890
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, 2026WELLINGTON MANAGEMENT GROUP LLP holds $7,932,021,048 across 13 Computer Hardware names. STX ranks #2 (29.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SNDK |
Sandisk Corp
|
1,066,886 | $2,425,810,702 | |
| 2 | STX |
Seagate Technology Holdings plc
This page
|
2,414,136 | $2,329,641,240 | |
| 3 | ANET |
Arista Networks, Inc.
|
8,440,963 | $1,433,950,789 | |
| 4 | DELL |
Dell Technologies Inc.
|
2,526,987 | $1,090,293,807 | |
| 5 | WDC |
Western Digital Corp
|
863,206 | $551,346,934 | |
| 6 | QBTS |
D-Wave Quantum Inc.
|
1,820,070 | $43,663,477 | |
| 7 | LOGI |
Logitech International S.A.
|
158,188 | $14,875,999 | |
| 8 | UMAC |
Unusual Machines, Inc.
|
547,649 | $12,212,572 |
All Filings in STX
Export CSV
22 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $2,329,641,240 | 2,414,136 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $34,317,391 | 87,598 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $245,095 | 890 | Put | Defined | 2026-02-17 | |
| 2025-12-31 | $35,694,949 | 129,616 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $288,464 | 1,222 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $28,495,274 | 120,712 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $32,455,630 | 224,871 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $79,342,959 | 933,996 | Shares | Defined | 2025-05-13 | |
| 2024-12-31 | $2,343,833 | 27,156 | Shares | Defined | 2025-02-12 | |
| 2024-09-30 | $3,178,339 | 29,018 | Shares | Defined | 2024-11-14 | |
| 2024-06-30 | $3,343,777 | 32,379 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $372,714,006 | 4,005,524 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $370,500,076 | 4,339,933 | Shares | Defined | 2024-02-12 | |
| 2023-09-30 | $288,959,723 | 4,381,497 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $263,212,485 | 4,254,283 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $245,373,631 | 3,711,035 | Shares | Defined | 2023-05-12 | |
| 2022-09-30 | $668,195 | 12,553 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $224,321 | 3,140 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $854,768 | 9,508 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $9,631,544 | 85,250 | Shares | Defined | 2022-02-11 | |
| 2021-09-30 | $112,318,712 | 1,361,109 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $105,557,412 | 1,200,471 | Shares | Defined | 2021-08-16 | |
| No filing history on record for this holder in this stock. | ||||||