Seagate Technology Holdings plc
DE ˙ DB ˙ IE00BKVD2N49
802,00 € ↓ -10,00 (-1,23%)
2026-06-04
DEL PRIS
SecurityDE:847 / Seagate Technology Holdings plc
InstitutionWestpac Banking Corp
Latest Disclosed Ownership3,151 shares
Latest Disclosed Value $ 1,234,436
Westpac Banking Corp reports 19.94% decrease in ownership of 847 / Seagate Technology Holdings plc

On May 11, 2026 - Westpac Banking Corp filed a 13F-HR form disclosing ownership of 3,151 shares of Seagate Technology Holdings plc (DE:847) valued at $1,055,585 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 3,936 shares of Seagate Technology Holdings plc. This represents a change in shares of -19.94% during the quarter. The current value of the position is $2,527,102 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,151 -785 -19.94 1,234 13.94 0.0858
2026-02-10 2025-12-31 13F SEAGATE TECHNOLOGY HOLDINGS PLC USD 0.00001 ORD SHS G7997R103 3,936 -950 -19.44 1,084 -6.07 0.0685
2025-11-14 2025-09-30 13F/A-1 SEAGATE TECHNOLOGY HOLDINGS PLC USD 0.00001 ORD SHS G7997R103 4,886 4,202 614.33 1,153 1,076.53 0.0715
2025-11-12 2025-09-30 13F SEAGATE TECHNOLOGY HOLDINGS PLC USD 0.00001 ORD SHS G7997R103 4,886 4,202 1,153 0.0289
2025-08-11 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 684 -1,215 -63.98 99 -39.13 0.0066
2025-05-13 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 1,899 -4,605 -70.80 161 -71.30 0.0119
2025-02-12 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 6,504 2,308 55.00 561 22.22 0.0372
2024-11-08 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,196 1,421 51.21 460 60.49 0.0308
2024-08-14 2024-06-30 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,775 2,775 287 0.0227
2024-08-13 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,775 2,775 287 0.0099
2023-08-10 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -140,410 -100.00 0 -100.00
2023-05-04 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 140,410 106,589 315.16 9,284 421.81 0.1248
2023-02-06 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 33,821 -8,473 -20.03 1,779 -20.97 0.0263
2022-11-08 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 42,294 -6,616 -13.53 2,251 -35.58 0.0343
2022-08-10 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 48,910 48,910 3,494 0.0455
2022-05-10 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -29,353 -100.00 0 -100.00
2022-02-08 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 29,353 -3,452 -10.52 3,316 22.50 0.0344
2021-10-27 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 32,805 -9,400 -22.27 2,707 -27.05 0.0289
2021-08-11 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 42,205 42,205 3,711 0.0373
2021-05-13 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -44,311 -100.00 0 -100.00
2021-02-11 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 44,311 4,964 12.62 2,754 42.11 0.0313
2020-11-10 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 39,347 1,000 2.61 1,939 4.42 0.0263
2020-08-12 2020-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 38,347 500 1.32 1,856 0.54 0.0277
2020-05-14 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 37,847 -11,897 -23.92 1,847 -37.61 0.0318
2020-02-11 2019-12-31 13F SEAGATE TECHNOLOGY COM G7945M107 49,744 -3,000 -5.69 2,960 4.30 0.0381
2019-11-13 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 52,744 52,744 6.03 2,837 -4.12 0.0394
2019-05-13 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -16,444 -100.00 0 -100.00
2019-02-07 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 16,444 16,444 635 0.0108
2018-01-18 2017-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -16,444 -100.00 0 -100.00
2017-10-30 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 16,444 -125,825 -88.44 545 -90.11 0.0120
2017-08-09 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 142,269 -20,100 -12.38 5,513 -26.08 0.1214
2017-05-18 2017-03-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 162,369 162,369 14.13 7,458 35.29 0.0598
2016-11-10 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -16,969 -100.00 0 -100.00
2016-08-10 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 16,969 3,700 27.88 413 -9.63 0.0045
2016-05-13 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 13,269 13,269 -21.80 457 10.65 0.0050
2015-08-12 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -42,912 -100.00 0 -100.00
2015-05-12 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 42,912 -3,100 -6.74 2,356 -23.01 0.0205
2015-02-11 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 46,012 -59,895 -56.55 3,060 -49.56 0.0291
2014-11-12 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 105,907 -341 -0.32 6,065 0.46 0.0591
2014-08-11 2014-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 106,248 90,388 569.91 6,037 578.31 0.0582
2014-05-12 2014-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 15,860 -77,392 -82.99 891 -83.01 0.0095
2014-02-13 2013-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 93,252 -237,787 -71.83 5,237 -63.84 0.0599
2013-11-12 2013-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 331,039 -174,641 -34.54 14,483 -28.41 0.1810
2013-08-14 2013-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 505,680 505,680 20,230 0.3092
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.