Seagate Technology Holdings plc
US ˙ NasdaqGS ˙ IE00BKVD2N49

SecuritySTX / Seagate Technology Holdings plc
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership213,997 shares
Latest Disclosed Value $ 83,835
Natixis Advisors, L.p. reports 38.06% increase in ownership of STX / Seagate Technology Holdings plc

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 213,997 shares of Seagate Technology Holdings plc (US:STX) valued at $83,835,465 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 155,007 shares of Seagate Technology Holdings plc. This represents a change in shares of 38.06% during the quarter. The current value of the position is $201,304,838 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 PLC ORD SHS COM G7997R103 213,997 58,990 38.06 84 97.62 0.1166
2026-02-10 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS COM G7997R103 155,007 20,524 15.26 43 35.48 0.0605
2025-11-13 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS COM G7997R103 134,483 70,176 109.13 32 244.44 0.0463
2025-08-13 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS COM G7997R103 64,307 -1,171 -1.79 9 80.00 0.0147
2025-05-08 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS COM G7997R103 65,478 1,582 2.48 6 0.00 0.0103
2025-02-10 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS COM G7997R103 63,896 -6,221 -8.87 6 -28.57 0.0103
2024-11-06 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS COM G7997R103 70,117 4,094 6.20 8 16.67 0.0150
2024-08-01 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS COM G7997R103 66,023 7,777 13.35 7 20.00 0.0148
2024-04-25 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS COM G7997R103 58,246 8,724 17.62 5 25.00 0.0125
2024-02-06 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS P LC ORD SHS G7997R103 49,522 26,220 112.52 4 300.00 0.0111
2023-11-13 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS COM G7997R103 23,302 1,974 9.26 2 0.00 0.0047
2023-08-15 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS COM G7997R103 21,328 1,400 7.03 1 0.00 0.0041
2023-05-11 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS COM G7997R103 19,928 -29 -0.15 1 0.00 0.0045
2023-01-27 2022-12-31 13F SEAGATE TECHNOLOGY COM G7997R103 19,957 3,578 21.85 1 -99.89 0.0040
2022-11-14 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS COM G7997R103 16,379 -26,069 -61.41 872 -71.24 0.0037
2022-08-12 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS COM G7997R103 42,448 16,034 60.70 3,032 27.66 0.0133
2022-05-12 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS COM G7997R103 26,414 4,295 19.42 2,375 -4.96 0.0091
2022-02-08 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS COM G7997R103 22,119 3,936 21.65 2,499 66.60 0.0095
2021-11-15 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS SPONSORED ADR G7997R103 18,183 -1,827 -9.13 1,500 -14.72 0.0062
2021-08-12 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS COM G7997R103 20,010 -1,263 -5.94 1,759 7.78 0.0082
2021-05-05 2021-03-31 13F SEAGATE TECHNOLOGY PLC SHS COM G7945M107 21,273 -2,200 -9.37 1,632 11.86 0.0085
2021-02-12 2020-12-31 13F SEAGATE TECHNOLOGY PLC SHS COM G7945M107 23,473 -277,477 -92.20 1,459 -90.16 0.0084
2020-11-12 2020-09-30 13F SEAGATE TECHNOLOGY COM G7945M107 300,950 20,872 7.45 14,828 9.36 0.0933
2020-08-11 2020-06-30 13F SEAGATE TECHNOLOGY COM G7945M107 280,078 6,260 2.29 13,559 1.47 0.0900
2020-04-27 2020-03-31 13F SEAGATE TECHNOLOGY PLC SHS G7945M107 273,818 30,274 12.43 13,362 -7.79 0.1089
2020-02-10 2019-12-31 13F SEAGATE TECHNOLOGY PLC SHS COM G7945M107 243,544 3,166 1.32 14,491 12.07 0.1022
2019-11-12 2019-09-30 13F SEAGATE TECHNOLOGY PLC SHS G7945M107 240,378 2,651 1.12 12,930 15.43 0.1026
2019-08-12 2019-06-30 13F SEAGATE TECHNOLOGY PLC SHS G7945M107 237,727 12,140 5.38 11,202 3.69 0.0915
2019-05-15 2019-03-31 13F/A-1 SEAGATE TECHNOLOGY COM G7945M107 225,587 20,265 9.87 10,803 36.35 0.0946
2019-05-15 2019-03-31 13F SEAGATE TECHNOLOGY COM G7945M107 225,587 20,265 10,803
2019-02-13 2018-12-31 13F/A-1 SEAGATE TECHNOLOGY COM G7945M107 205,322 -2,064 -1.00 7,923 -19.31 0.0782
2019-02-13 2018-12-31 13F SEAGATE TECHNOLOGY COM G7945M107 205,322 -2,064 7,923
2018-11-13 2018-09-30 13F SEAGATE TECHNOLOGY PLC SHS G7945M107 207,386 -11,239 -5.14 9,819 -20.46 0.0864
2018-08-14 2018-06-30 13F/A-1 SEAGATE TECHNOLOGY COM G7945M107 218,625 -54,893 -20.07 12,345 -22.87 0.1179
2018-08-14 2018-06-30 13F SEAGATE TECHNOLOGY COM G7945M107 218,625 12,345
2018-05-10 2018-03-31 13F SEAGATE TECHNOLOGY COM G7945M107 273,518 -15,198 -5.26 16,006 32.51 0.1580
2018-02-14 2017-12-31 13F SEAGATE TECHNOLOGY PLC SHS G7945M107 288,716 15,775 5.78 12,079 33.43 0.1230
2017-11-14 2017-09-30 13F SEAGATE TECHNOLOGY COM G7945M107 272,941 2,577 0.95 9,053 -13.59 0.0956
2017-07-27 2017-06-30 13F SEAGATE TECHNOLOGY COM G7945M107 270,364 16,499 6.50 10,477 -10.15 0.1134
2017-05-12 2017-03-31 13F SEAGATE TECHNOLOGY PLC SHS G7945M107 253,865 -31,138 -10.93 11,660 7.18 0.1292
2017-02-07 2016-12-31 13F SEAGATE TECHNOLOGY COM G7945M107 285,003 25,711 9.92 10,879 8.83 0.1308
2016-11-04 2016-09-30 13F SEAGATE TECHNOLOGY PLC SHS COM G7945M107 259,292 -9,634 -3.58 9,996 52.59 0.1295
2016-08-01 2016-06-30 13F SEAGATE TECHNOLOGY COM G7945M107 268,926 71,379 36.13 6,551 -3.73 0.0906
2016-05-06 2016-03-31 13F SEAGATE TECHNOLOGY COM G7945M107 197,547 25,498 14.82 6,805 7.90 0.1018
2016-02-12 2015-12-31 13F SEAGATE TECHNOLOGY COM G7945M107 172,049 7,527 4.58 6,307 -14.43 0.1034
2015-11-12 2015-09-30 13F SEAGATE TECHNOLOGY COM G7945M107 164,522 -10,147 -5.81 7,371 -11.16 0.1278
2015-08-14 2015-06-30 13F SEAGATE TECHNOLOGY PLC SHS G7945M107 174,669 10,706 6.53 8,297 -2.74 0.1409
2015-05-15 2015-03-31 13F SEAGATE TECHNOLOGY PLC SHS G7945M107 163,963 16,879 11.48 8,531 -12.78 0.1497
2015-02-05 2014-12-31 13F SEAGATE TECHNOLOGY COM G7945M107 147,084 26,060 21.53 9,781 41.12 0.1831
2014-11-03 2014-09-30 13F SEAGATE TECHNOLOGY COM G7945M107 121,024 14,549 13.66 6,931 14.56 0.1391
2014-08-13 2014-06-30 13F SEAGATE TECHNOLOGY COM G7945M107 106,475 -3,783 -3.43 6,050 -2.29 0.0867
2014-05-13 2014-03-31 13F SEAGATE TECHNOLOGY COM G7945M107 110,258 11,897 12.10 6,192 12.09 0.0953
2014-02-12 2013-12-31 13F SEAGATE TECHNOLOGY COM G7945M107 98,361 -1,558 -1.56 5,524 26.35 0.0904
2013-10-30 2013-09-30 13F SEAGATE TECHNOLOGY COM G7945M107 99,919 -5,540 -5.25 4,372 -7.53 0.0805
2013-07-19 2013-06-30 13F SEAGATE TECHNOLOGY COM G7945M107 105,459 105,459 4,728 0.0942
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.