Seagate Technology Holdings plc
US ˙ NasdaqGS ˙ IE00BKVD2N49

SecuritySTX / Seagate Technology Holdings plc
InstitutionDynamic Technology Lab Private Ltd
Latest Disclosed Ownership1,009 shares
Latest Disclosed Value $ 395,286
Dynamic Technology Lab Private Ltd reports 65.75% decrease in ownership of STX / Seagate Technology Holdings plc

On May 15, 2026 - Dynamic Technology Lab Private Ltd filed a 13F-HR form disclosing ownership of 1,009 shares of Seagate Technology Holdings plc (US:STX) valued at $395,286 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,946 shares of Seagate Technology Holdings plc. This represents a change in shares of -65.75% during the quarter. The current value of the position is $949,156 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)
2026-05-15 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 1,009 -1,937 -65.75 395 -51.29 0.0642
2026-02-13 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,946 2,099 247.82 811 305.50 0.1838
2025-11-13 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 847 847 200 0.0339
2025-05-16 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -9,495 -100.00 0 -100.00
2025-02-13 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 9,495 9,495 820 0.1318
2024-08-15 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -22,640 -100.00 0 -100.00
2024-05-14 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 22,640 22,640 2 0.2251
2023-11-14 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -16,534 -100.00 0 -100.00
2023-08-14 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 16,534 16,534 1 0.1290
2023-02-14 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -31,815 -100.00 0 -100.00
2022-11-14 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 31,815 31,815 1,694 0.1671
2021-05-14 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -46,649 -100.00 0 -100.00
2021-02-11 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 46,649 46,649 2,900 0.4687
2020-11-13 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -21,398 -100.00 0 -100.00
2020-08-14 2020-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 21,398 21,398 1,036 0.1559
2020-05-13 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -16,396 -100.00 0 -100.00
2020-02-14 2019-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 16,396 16,396 976 0.1564
2019-11-14 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -10,497 -100.00 0 -100.00
2019-08-14 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 10,497 10,497 495 0.0833
2017-11-08 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -10,900 -100.00 0 -100.00
2017-08-17 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 10,900 4,400 67.69 422 41.14 0.0797
2017-05-11 2017-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 6,500 6,500 299 0.0702
2016-05-18 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -7,376 -100.00 0 -100.00
2016-03-01 2015-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 7,376 0 0.00 328 0.00 0.1839
2016-03-01 2015-09-30 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 7,376 2,511 51.61 328 17.56 0.2812
2016-02-24 2014-09-30 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 4,865 4,865 279 0.2807
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.