Seagate Technology Holdings plc
DE ˙ XTRA ˙ IE00BKVD2N49
38,91 € ↓ -0,56 (-1,41%)
2017-05-15
DEL PRIS
SecurityDE:STT / Seagate Technology Holdings plc
InstitutionWinton Capital Group Ltd
Latest Disclosed Ownership3,391 shares
Latest Disclosed Value $ 1,328,458
Winton Capital Group Ltd reports 223.57% increase in ownership of STT / Seagate Technology Holdings plc

On May 12, 2026 - Winton Capital Group Ltd filed a 13F-HR form disclosing ownership of 3,391 shares of Seagate Technology Holdings plc (DE:STT) valued at $1,328,458 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 1,048 shares of Seagate Technology Holdings plc. This represents a change in shares of 223.57% during the quarter. The current value of the position is $131,944 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)
2026-05-12 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,391 2,343 223.57 1,328 361.11 0.0466
2026-02-11 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 1,048 -15,648 -93.72 289 -92.69 0.0100
2025-11-13 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 16,696 -36,956 -68.88 3,941 -49.10 0.1475
2025-08-14 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 53,652 53,652 7,744 0.3957
2025-02-12 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -25,959 -100.00 0 -100.00
2024-11-12 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 25,959 25,959 2,843 0.1992
2024-08-09 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -19,154 -100.00 0 -100.00
2024-05-14 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 19,154 19,154 1,782 0.1259
2023-08-14 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -13,672 -100.00 0 -100.00
2023-05-12 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 13,672 13,672 904 0.0551
2022-11-10 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -29,860 -100.00 0 -100.00
2022-08-10 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 29,860 18,376 160.01 2,133 106.69 0.1131
2022-05-11 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 11,484 7,680 201.89 1,032 140.00 0.0541
2022-02-10 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,804 -9,773 -71.98 430 -61.61 0.0260
2021-10-28 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 13,577 -23,980 -63.85 1,120 -66.08 0.0627
2021-08-10 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 37,557 -4,632 -10.98 3,302 1.98 0.1773
2021-07-21 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 42,189 6,301 17.56 3,238 45.14 0.1847
2021-02-12 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 35,888 35,888 2,231 0.1611
2020-08-05 2020-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -57,625 -100.00 0 -100.00
2020-05-11 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 57,625 34,163 145.61 2,812 101.43 0.0742
2020-02-13 2019-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 23,462 23,462 1,396 0.0196
2019-11-08 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -64,654 -100.00 0 -100.00
2019-07-08 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 64,654 -371,798 -85.19 3,046 -85.43 0.0592
2019-05-13 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 436,452 -415,084 -48.75 20,902 -36.39 0.4203
2019-02-05 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 851,536 342,927 67.42 32,861 36.45 0.7080
2018-11-02 2018-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 508,609 197,226 63.34 24,083 36.96 0.5045
2018-08-20 2018-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 311,383 -8,816 -2.75 17,584 -6.16 0.4493
2018-05-21 2018-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 320,199 305,257 2,042.95 18,738 2,898.08 0.5291
2018-02-13 2017-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 14,942 5,731 62.22 625 104.25 0.0181
2017-11-13 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 9,211 -149,541 -94.20 306 -95.03 0.0097
2017-08-17 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 158,752 -9,254 -5.51 6,152 -20.28 0.1809
2017-05-19 2017-03-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 168,006 -138,485 -45.18 7,717 -34.04 0.2098
2017-05-12 2017-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 224,545 8,656
2017-02-13 2016-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 306,491 81,946 36.49 11,699 35.15 0.3862
2016-11-08 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 224,545 32,509 16.93 8,656 85.04 0.1487
2016-08-12 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 192,036 -1,695,975 -89.83 4,678 -92.81 0.0773
2016-05-06 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 1,888,011 -772,908 -29.05 65,042 -33.32 0.7051
2016-02-08 2015-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 2,660,919 4,008 0.15 97,549 -18.05 0.8671
2015-11-10 2015-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 2,656,911 741,417 38.71 119,030 30.82 0.9415
2015-08-06 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,915,494 566,096 41.95 90,986 29.59 0.8357
2015-05-12 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 1,349,398 548,035 68.39 70,209 31.75 0.5591
2015-03-16 2014-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 801,363 -422,940 -34.55 53,291 -24.00 0.6598
2015-02-13 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 874,247 58,137
2014-10-28 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,224,303 17,180 1.42 70,116 2.23 0.5015
2014-08-05 2014-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,207,123 1,207,123 68,589 0.4676
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.