Seagate Technology Holdings plc
DE ˙ XTRA ˙ IE00BKVD2N49
38,91 € ↓ -0,56 (-1,41%)
2017-05-15
DEL PRIS
SecurityDE:STT / Seagate Technology Holdings plc
InstitutionAPG Asset Management N.V.
Latest Disclosed Ownership144,931 shares
Latest Disclosed Value $ 49,278,049
APG Asset Management N.V. reports 17.95% increase in ownership of STT / Seagate Technology Holdings plc

On May 13, 2026 - APG Asset Management N.V. filed a 13F-HR form disclosing ownership of 144,931 shares of Seagate Technology Holdings plc (DE:STT) valued at $49,278,049 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 122,873 shares of Seagate Technology Holdings plc. This represents a change in shares of 17.95% during the quarter. The current value of the position is $5,639,265 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 144,931 22,058 17.95 49,278 71.04 0.1561
2026-02-12 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 122,873 -2,755 -2.19 28,812 14.16 0.0818
2025-11-12 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 125,628 0 0.00 25,239 63.40 0.0708
2025-08-12 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 125,628 5,425 4.51 15,447 63.40 0.0457
2025-05-14 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 120,203 -5,697 -4.53 9,453 -9.91 0.0293
2025-02-13 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 125,900 115,309 1,088.75 10,494 909.91 0.0292
2024-11-14 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 10,591 -217,801 -95.36 1,039 -95.28 0.0069
2024-08-14 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 228,392 37,446 19.61 22,007 33.77 0.0393
2024-05-14 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 190,946 41,397 27.68 16,451 42.35 0.0288
2024-02-13 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 149,549 1,174 0.79 11,558 18.11 0.0225
2023-11-14 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 148,375 -17,255 -10.42 9,785 4.18 0.0200
2023-08-14 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 165,630 -10,828 -6.14 9,393 -12.54 0.0189
2023-05-12 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 176,458 -30,441 -14.71 10,739 107,290.00 0.0228
2023-02-14 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 206,899 181,087 701.56 11 -99.29 0.0207
2022-11-14 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 25,812 -3,884 -13.08 1,403 -30.85 0.0036
2022-08-12 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 29,696 -24,137 -44.84 2,029 -53.36 0.0048
2022-05-12 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 53,833 -441,737 -89.14 4,350 -91.16 0.0082
2022-02-11 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 495,570 -46,900 -8.65 49,235 27.47 0.0836
2021-11-15 2021-09-30 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 542,470 -32,500 -5.65 38,625 -9.40 0.0686
2021-11-15 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 542,470 -32,500 38,625 0.0694
2021-08-13 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 574,970 -56,436 -8.94 42,632 3.40 0.0724
2021-05-14 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 631,406 53,261 9.21 41,232 40.38 0.0704
2021-02-12 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 578,145 52,406 9.97 29,371 32.97 0.0479
2020-11-12 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 525,739 -93,287 -15.07 22,089 -17.21 0.0382
2020-08-14 2020-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 619,026 -241,444 -28.06 26,681 -36.46 0.0486
2020-05-19 2020-03-31 13F/A-2 SEAGATE TECHNOLOGY SHS G7945M107 860,470 -1,197,500 -58.19 41,991 -61.51 0.0823
2020-05-15 2020-03-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 860,470 0 41,991 0.0832
2020-05-14 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,147,319 1,089,349 134,234 251,146.7690
2020-02-13 2019-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 2,057,970 255,839 14.20 109,086 22.68 0.1772
2019-11-08 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,802,131 -1,240,288 -40.77 88,916 -29.37 0.1465
2019-08-13 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 3,042,419 -104,900 -3.33 125,886 -6.22 0.2160
2019-05-14 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,147,319 -144,800 -4.40 134,234 20.79 0.2464
2019-02-19 2018-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 3,292,119 409,800 14.22 111,134 -5.42 0.2259
2019-02-13 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,292,119 409,800 111,134
2018-11-09 2018-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 2,882,319 71,000 2.53 117,501 -13.59 0.2057
2018-08-13 2018-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 2,811,319 -23,500 -0.83 135,973 0.80 0.2499
2018-05-14 2018-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 2,834,819 -236,217 -7.69 134,889 26.06 0.2608
2018-02-21 2017-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 3,071,036 -321,334 -9.47 107,005 -4.91 0.1957
2018-01-24 2017-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,071,036 -321,334 107,005
2017-10-19 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 3,392,370 135,300 4.15 112,525 -10.84 0.1853
2017-07-21 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 3,257,070 -31,165 -0.95 126,211 -16.43 0.2292
2017-05-01 2017-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,288,235 -91,351 -2.70 151,029 23.49 0.2768
2017-01-30 2016-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,379,586 -96,845 -2.79 122,303 -8.74 0.2300
2016-10-31 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 3,476,431 -203,543 -5.53 134,016 49.50 0.2355
2016-08-11 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 3,679,974 434,200 13.38 89,644 -19.83 0.1687
2016-05-16 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,245,774 0 0.00 111,817 -6.03 0.2320
2016-02-17 2015-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 3,245,774 44,367 1.39 118,990 -17.04 0.2740
2016-02-16 2015-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 42,388 118,990
2015-11-12 2015-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 3,201,407 216,516 7.25 143,423 1.16 0.3285
2015-08-12 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 2,984,891 233,694 8.49 141,782 -0.95 0.2844
2015-05-14 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 2,751,197 25,485 0.93 143,145 -21.03 0.2959
2015-02-09 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 2,725,712 -86,430 -3.07 181,260 12.55 0.3475
2014-11-12 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 2,812,142 658,339 30.57 161,051 31.60 0.3256
2014-08-11 2014-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 2,153,803 144,871 7.21 122,379 8.47 0.2613
2014-04-30 2014-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 2,008,932 -503,122 -20.03 112,822 -20.03 0.2948
2014-02-20 2013-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 2,512,054 -57,680 -2.24 141,077 25.51 0.4147
2014-02-12 2013-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 2,512,054 141,077
2013-11-13 2013-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 2,569,734 -51,421 -1.96 112,400 -4.35 0.3551
2013-08-14 2013-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 2,621,155 2,621,155 117,506 0.3668
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.