Seagate Technology Holdings plc
DE ˙ XTRA ˙ IE00BKVD2N49
38,91 € ↓ -0,56 (-1,41%)
2017-05-15
DEL PRIS
SecurityDE:STT / Seagate Technology Holdings plc
InstitutionM&t Bank Corp
Latest Disclosed Ownership27,348 shares
Latest Disclosed Value $ 10,713,853
M&t Bank Corp reports 7.76% decrease in ownership of STT / Seagate Technology Holdings plc

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 27,348 shares of Seagate Technology Holdings plc (DE:STT) valued at $10,713,853 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 29,649 shares of Seagate Technology Holdings plc. This represents a change in shares of -7.76% during the quarter. The current value of the position is $1,064,111 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 27,348 -2,301 -7.76 10,714 31.21 0.0367
2026-01-30 2025-12-31 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 29,649 -306 -1.02 8,165 15.47 0.0262
2026-01-28 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,727 -26,228 1,048 0.0006
2025-11-14 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 29,955 17,481 140.14 7,072 292.83 0.0238
2025-08-13 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 12,474 281 2.30 1,801 73.91 0.0062
2025-04-30 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 12,193 256 2.14 1,035 0.49 0.0038
2025-02-06 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 11,937 495 4.33 1,030 -17.80 0.0035
2024-11-19 2024-09-30 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 11,442 52 0.46 1,253 6.55 0.0041
2024-11-15 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 11,442 52 1,253 0.0008
2024-07-31 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 11,390 664 6.19 1,176 17.84 0.0040
2024-05-07 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 10,726 122 1.15 998 10.28 0.0035
2024-02-06 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 10,604 301 2.92 905 33.28 0.0033
2023-11-02 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 10,303 585 6.02 679 12.98 0.0027
2023-08-09 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 9,718 -12,454 -56.17 601 -59.00 0.0022
2023-05-11 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 22,172 616 2.86 1,466 29.28 0.0057
2023-02-13 2022-12-31 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 21,556 -1,061 -4.69 1,134 -5.89 0.0046
2023-02-13 2022-12-31 13F ROYALTY PHARMA SHS CLASS A G7997R103 22,461 -156 1,162 0.0047
2022-11-17 2022-09-30 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 22,617 137 0.61 1,205 -23.78 0.0054
2022-11-14 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 22,617 137 1,186 0.0010
2022-08-05 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 22,480 22,480 1,581 0.0074
2022-05-09 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -24,613 -100.00 0 -100.00
2022-02-07 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 24,613 752 3.15 2,780 41.19 0.0117
2021-10-28 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 23,861 207 0.88 1,969 -5.29 0.0089
2021-08-13 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 23,654 266 1.14 2,079 15.82 0.0091
2021-05-06 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 23,388 -17,452 -42.73 1,795 -29.28 0.0077
2021-02-12 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 40,840 791 1.98 2,538 28.64 0.0111
2020-11-06 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 40,049 -207 -0.51 1,973 1.23 0.0097
2020-07-29 2020-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 40,256 -4,983 -11.01 1,949 -11.69 0.0104
2020-05-14 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 45,239 1,130 2.56 2,207 -15.89 0.0131
2020-02-07 2019-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 44,109 -1,674 -3.66 2,624 6.54 0.0123
2019-11-12 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 45,783 150 0.33 2,463 14.56 0.0123
2019-08-12 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 45,633 -8,842 -16.23 2,150 -17.59 0.0112
2019-05-15 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 54,475 -27,915 -33.88 2,609 -17.93 0.0136
2019-02-01 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 82,390 -34,141 -29.30 3,179 -42.39 0.0182
2018-11-09 2018-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 116,531 -51,420 -30.62 5,518 -41.82 0.0276
2018-08-10 2018-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 167,951 -2,948 -1.72 9,484 -5.17 0.0510
2018-05-04 2018-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 170,899 4,460 2.68 10,001 43.61 0.0537
2018-02-06 2017-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 166,439 31,333 23.19 6,964 55.41 0.0365
2017-11-13 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 135,106 98,429 268.37 4,481 215.34 0.0243
2017-08-11 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 36,677 1,715 4.91 1,421 -11.52 0.0084
2017-05-10 2017-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 34,962 13,246 61.00 1,606 93.73 0.0097
2017-02-14 2016-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 21,716 -6,049 -21.79 829 -22.52 0.0052
2016-11-04 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 27,765 -4,253 -13.28 1,070 37.18 0.0068
2016-08-04 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 32,018 878 2.82 780 -27.37 0.0052
2016-05-11 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 31,140 1,604 5.43 1,074 -0.83 0.0073
2016-02-12 2015-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 29,536 -9,943 -25.19 1,083 -38.78 0.0072
2015-11-13 2015-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 39,479 -37,708 -48.85 1,769 -51.75 0.0121
2015-08-14 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 77,187 18,157 30.76 3,666 19.34 0.0221
2015-05-14 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 59,030 13,097 28.51 3,072 0.59 0.0192
2015-02-12 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 45,933 7,639 19.95 3,054 39.26 0.0191
2014-11-14 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 38,294 38,094 19,047.00 2,193 19,836.36 0.0154
2014-08-13 2014-06-30 13F SEAGATE TECHNOLOGY COMMON G7945M107 200 -900 -81.82 11 -82.26 0.0005
2014-05-14 2014-03-31 13F SEAGATE TECHNOLOGY COMMON STOCK G7945M107 1,100 698 173.63 62 169.57 0.0026
2014-02-12 2013-12-31 13F SEAGATE TECHNOLOGY COMMON STOCK G7945M107 402 200 99.01 23 155.56 0.0010
2013-11-13 2013-09-30 13F SEAGATE TECHNOLOGY COMMON STOCK G7945M107 202 -100 -33.11 9 -35.71 0.0004
2013-07-30 2013-06-30 13F SEAGATE TECHNOLOGY COMMON STOCK G7945M107 302 302 14 0.0007
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.