Seagate Technology Holdings plc
DE ˙ XTRA ˙ IE00BKVD2N49
38,91 € ↓ -0,56 (-1,41%)
2017-05-15
DEL PRIS
SecurityDE:STT / Seagate Technology Holdings plc
InstitutionProspera Financial Services Inc
Latest Disclosed Ownership21,297 shares
Latest Disclosed Value $ 8,343,332
Prospera Financial Services Inc reports 584.35% increase in ownership of STT / Seagate Technology Holdings plc

On April 14, 2026 - Prospera Financial Services Inc filed a 13F-HR form disclosing ownership of 21,297 shares of Seagate Technology Holdings plc (DE:STT) valued at $8,343,332 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 3,112 shares of Seagate Technology Holdings plc. This represents a change in shares of 584.35% during the quarter. The current value of the position is $828,666 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)
2026-04-14 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 21,297 18,185 584.35 8,343 873.51 0.1344
2026-02-09 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,112 116 3.87 857 21.22 0.0141
2025-11-06 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,996 -7,176 -70.55 707 -51.84 0.0121
2025-08-06 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 10,172 10,172 1,468 0.0274
2025-05-15 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -2,531 -100.00 0 -100.00
2025-02-13 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,531 0 0.00 219 -21.30 0.0051
2024-11-07 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,531 -975 -27.81 277 -23.48 0.0071
2024-08-13 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,506 -1,909 -35.25 362 -28.03 0.0101
2024-08-13 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 5,415 2,716 100.63 504 118.70 0.0150
2024-02-14 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,699 2,699 230 0.0076
2022-10-27 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -1,251 -100.00 0 -100.00
2022-08-08 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 1,251 -621 -33.17 89 -47.02 0.0045
2022-05-04 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 1,872 1,872 168 0.0070
2021-02-12 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -1,206 -100.00 0 -100.00
2020-11-04 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,206 1,206 59 0.0225
2019-10-22 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -11,091 -100.00 0 -100.00
2019-08-14 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 11,091 11,091 424 0.0856
2019-05-02 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -11,091 -100.00 0 -100.00
2019-02-13 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 11,091 3,597 48.00 424 16.80 0.0856
2018-10-25 2018-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 7,494 7,494 363 0.0677
2017-07-19 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -22,359 -100.00 0 -100.00
2017-04-13 2017-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 22,359 -1,348 -5.69 1,027 13.48 0.1851
2017-01-11 2016-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 23,707 847 3.71 905 2.72 0.1773
2016-10-12 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 22,860 -2,280 -9.07 881 43.95 0.1769
2016-07-26 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 25,140 12,834 104.29 612 44.34 0.1265
2016-04-12 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 12,306 3,166 34.64 424 26.57 0.0944
2016-01-12 2015-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 9,140 984 12.06 335 -8.22 0.0735
2015-10-16 2015-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 8,156 -6,534 -44.48 365 -47.71 0.0923
2015-08-07 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 14,690 1,841 14.33 698 4.33 0.1661
2015-04-22 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 12,849 -870 -6.34 669 -26.64 0.1490
2015-01-14 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 13,719 -1,797 -11.58 912 2.59 0.2273
2014-10-16 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 15,516 479 3.19 889 4.10 0.2396
2014-07-07 2014-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 15,037 6,163 69.45 854 71.49 0.2310
2014-02-13 2013-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 8,874 8,874 498 0.1674
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.