Seagate Technology Holdings plc
DE ˙ XTRA ˙ IE00BKVD2N49
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
38,91 € ↓ -0,56 (-1,41%)
2017-05-15
DEL PRIS
SecurityDE:STT / Seagate Technology Holdings plc
InstitutionWindward Capital Management Co /ca
Latest Disclosed Ownership36,741 shares
Latest Disclosed Value $ 14,393,848
Windward Capital Management Co /ca reports 29.69% decrease in ownership of STT / Seagate Technology Holdings plc

On May 13, 2026 - Windward Capital Management Co /ca filed a 13F-HR form disclosing ownership of 36,741 shares of Seagate Technology Holdings plc (DE:STT) valued at $14,393,848 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 52,255 shares of Seagate Technology Holdings plc. This represents a change in shares of -29.69% during the quarter. The current value of the position is $1,429,592 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)
2026-05-13 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 36,741 -15,514 -29.69 14,394 0.02 1.1722
2026-01-28 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 52,255 -3,637 -6.51 14,390 9.07 1.1399
2025-10-30 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 55,892 -383 -0.68 13,194 62.44 1.0521
2025-08-12 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 56,275 -1,276 -2.22 8,122 66.16 0.6892
2025-05-13 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 57,551 -198 -0.34 4,889 -1.93 0.4217
2025-01-27 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 57,749 -773 -1.32 4,984 -22.23 0.3811
2024-11-01 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 58,522 368 0.63 6,410 6.71 0.4891
2024-08-06 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 58,154 -1,596 -2.67 6,006 8.02 0.5055
2024-09-20 2024-03-31 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 59,750 -1,190 -1.95 5,560 111,100.00 0.4641
2024-05-07 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 59,750 -1,190 5,560 0.4641
2024-10-03 2023-12-31 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 60,940 446 0.74 5 66.67 0.4510
2024-01-16 2023-12-31 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,940 446 5 0.4448
2024-10-03 2023-09-30 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 60,494 -174 -0.29 4 0.00 0.3906
2023-10-20 2023-09-30 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,494 -174 4 0.3854
2023-07-18 2023-06-30 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,668 -35 -0.06 4 -25.00 0.3390
2023-04-24 2023-03-31 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,703 36 0.06 4 33.33 0.3700
2023-01-06 2022-12-31 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,667 -234 -0.38 3 -99.91 0.3463
2022-10-14 2022-09-30 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,901 322 0.53 3,242 -25.09 0.3666
2022-07-08 2022-06-30 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,579 379 0.63 4,328 -20.03 0.4657
2022-04-20 2022-03-31 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,200 -688 -1.13 5,412 -21.33 0.4829
2022-01-14 2021-12-31 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,888 760 1.26 6,879 38.63 0.5698
2021-10-12 2021-09-30 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 60,128 241 0.40 4,962 -5.77 0.4598
2021-07-19 2021-06-30 13F SEAGATE TECHNOLOGY HLD F COM G7997R103 59,887 409 0.69 5,266 15.36 0.4894
2021-04-15 2021-03-31 13F SEAGATE TECHNOLOGY F COM G7945M107 59,478 -267 -0.45 4,565 22.91 0.4565
2021-01-21 2020-12-31 13F SEAGATE TECHNOLOGY F COM G7945M107 59,745 -107 -0.18 3,714 25.94 0.3742
2020-10-13 2020-09-30 13F SEAGATE TECHNOLOGY F COM G7945M107 59,852 395 0.66 2,949 2.47 0.2979
2020-07-20 2020-06-30 13F SEAGATE TECHNOLOGY F COM G7945M107 59,457 -1,303 -2.14 2,878 -2.93 0.3260
2020-04-14 2020-03-31 13F SEAGATE TECHNOLOGY F COM G7945M107 60,760 -7,840 -11.43 2,965 -27.36 0.3970
2020-01-14 2019-12-31 13F SEAGATE TECHNOLOGY F COM G7945M107 68,600 12,767 22.87 4,082 35.93 0.4360
2019-10-11 2019-09-30 13F SEAGATE TECHNOLOGY PLCCOM COM G7945M107 55,833 5,797 11.59 3,003 27.35 0.3591
2019-07-11 2019-06-30 13F SEAGATE TECHNOLOGY PLCCOM COM G7945M107 50,036 467 0.94 2,358 -0.67 0.2939
2019-04-12 2019-03-31 13F SEAGATE TECHNOLOGY SHS COM G7945M107 49,569 5,814 13.29 2,374 40.56 0.3035
2019-01-15 2018-12-31 13F SEAGATE TECHNOLOGY SHS COM G7945M107 43,755 1,991 4.77 1,689 -14.61 0.2435
2018-10-10 2018-09-30 13F SEAGATE TECHNOLOGY SHS COM G7945M107 41,764 943 2.31 1,978 -14.19 0.2459
2018-07-12 2018-06-30 13F SEAGATE TECHNOLOGY SHS COM G7945M107 40,821 450 1.11 2,305 -2.45 0.3254
2018-04-12 2018-03-31 13F SEAGATE TECHNOLOGY SHS COM G7945M107 40,371 -1,351 -3.24 2,363 35.34 0.3443
2018-01-10 2017-12-31 13F SEAGATE TECHNOLOGY SHS COM G7945M107 41,722 20,409 95.76 1,746 146.96 0.2589
2017-10-17 2017-09-30 13F SEAGATE TECHNOLOGY SHS COM G7945M107 21,313 1,558 7.89 707 -7.70 0.1160
2017-07-17 2017-06-30 13F SEAGATE TECHNOLOGY SHS COM G7945M107 19,755 2,676 15.67 766 -2.30 0.1303
2017-04-21 2017-03-31 13F SEAGATE TECHNOLOGY SHS COM G7945M107 17,079 1,745 11.38 784 34.02 0.1394
2017-01-23 2016-12-31 13F SEAGATE TECHNOLOGY SHS COM G7945M107 15,334 3,200 26.37 585 25.00 0.1115
2016-10-14 2016-09-30 13F SEAGATE TECHNOLOGY SHS COM G7945M107 12,134 12,134 0.00 468 0.0873
2016-07-14 2016-06-30 13F SEAGATE TECHNOLOGY SHS COM G7945M107 0 -6,812 -100.00 0 -100.00
2016-04-20 2016-03-31 13F SEAGATE TECHNOLOGY SHS COM G7945M107 6,812 6,812 235 0.0458
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.