Seagate Technology Holdings plc
US ˙ NasdaqGS ˙ IE00BKVD2N49

SecuritySTX / Seagate Technology Holdings plc
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership49,263 shares
Latest Disclosed Value $ 19,299,472
Advisory Services Network, LLC reports 2.39% increase in ownership of STX / Seagate Technology Holdings plc

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 49,263 shares of Seagate Technology Holdings plc (US:STX) valued at $19,299,273 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 48,111 shares of Seagate Technology Holdings plc. This represents a change in shares of 2.39% during the quarter. The current value of the position is $45,617,045 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)
2026-05-15 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS Stock G7997R103 49,263 1,152 2.39 19,299 45.66 0.1783
2026-02-17 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PLC ORD SHS Stock G7997R103 48,111 -1,836 -3.68 13,250 12.37 0.1875
2025-11-18 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 49,947 12,607 33.76 11,791 101.13 0.1729
2025-08-19 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 37,340 12,257 48.87 5,863 175.21 0.0944
2025-05-15 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 25,083 1,554 6.60 2,131 4.93 0.0409
2025-02-13 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 23,529 2,496 11.87 2,031 -6.54 0.0378
2024-11-14 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 21,033 0 0.00 2,172 0.00 0.0449
2024-08-13 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 21,033 5,832 38.37 2,172 53.61 0.0449
2024-05-06 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 15,201 -4,737 -23.76 1,414 -16.92 0.0314
2024-02-09 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 19,938 -1,008 -4.81 1,702 23.24 0.0416
2023-11-14 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 20,946 -2,743 -11.58 1,381 -5.73 0.0371
2023-08-09 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 23,689 -1,595 -6.31 1,466 -12.33 0.0390
2023-05-17 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 25,284 548 2.22 1,672 28.44 0.0463
2023-02-13 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 24,736 -1,069 -4.14 1,301 -5.31 0.0399
2022-11-14 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 25,805 -11,217 -30.30 1,374 -48.05 0.0485
2022-08-02 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 37,022 -16,109 -30.32 2,645 -44.63 0.0905
2022-05-23 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 53,131 -852 -1.58 4,777 -21.68 0.1406
2022-02-14 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 53,983 3,317 6.55 6,099 45.87 0.1755
2021-11-05 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 50,666 -8,715 -14.68 4,181 -19.92 0.1330
2021-08-12 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL Stock G7997R103 59,381 20,194 51.53 5,221 73.57 0.1647
2021-05-24 2021-03-31 13F SEAGATE TECHNOLOGY Stock G7997R103 39,187 3,283 9.14 3,008 34.77 0.1117
2021-02-09 2020-12-31 13F SEAGATE TECHNOLOGY Stock G7945M107 35,904 1,307 3.78 2,232 30.91 0.0896
2020-11-16 2020-09-30 13F SEAGATE TECHNOLOGY Stock G7945M107 34,597 15,103 77.48 1,705 80.61 0.0802
2020-08-10 2020-06-30 13F SEAGATE TECHNOLOGY Stock G7945M107 19,494 1,188 6.49 944 5.71 0.0518
2020-05-15 2020-03-31 13F SEAGATE TECHNOLOGY Stock G7945M107 18,306 -4,315 -19.08 893 -33.66 0.0584
2020-02-04 2019-12-31 13F SEAGATE TECHNOLOGY Stock G7945M107 22,621 6,600 41.20 1,346 78.28 0.0708
2019-11-04 2019-09-30 13F SEAGATE TECHNOLOGY Stock G7945M107 16,021 0 0.00 755 0.00 0.0463
2019-08-01 2019-06-30 13F SEAGATE TECHNOLOGY Stock G7945M107 16,021 1,903 13.48 755 11.69 0.0463
2019-05-20 2019-03-31 13F SEAGATE TECHNOLOGY Stock G7945M107 14,118 9,815 228.10 676 307.23 0.0475
2019-02-15 2018-12-31 13F SEAGATE TECHNOLOGY Stock G7945M107 4,303 -33,091 -88.49 166 -90.63 0.0145
2018-11-02 2018-09-30 13F SEAGATE TECHNOLOGY Stock G7945M107 37,394 -687 -1.80 1,771 -19.17 0.1293
2018-07-27 2018-06-30 13F SEAGATE TECHNOLOGY Stock G7945M107 38,081 -1,403 -3.55 2,191 -5.19 0.1669
2018-04-23 2018-03-31 13F SEAGATE TECHNOLOGY Stock G7945M107 39,484 25,630 185.00 2,311 298.45 0.1846
2018-02-08 2017-12-31 13F SEAGATE TECHNOLOGY Stock G7945M107 13,854 1,809 15.02 580 45.00 0.0506
2017-10-12 2017-09-30 13F SEAGATE TECHNOLOGY Stock G7945M107 12,045 -17,590 -59.36 400 -65.16 0.0458
2017-08-17 2017-06-30 13F SEAGATE TECHNOLOGY PLC SHS Stock G7945M107 29,635 3,194 12.08 1,148 -5.44 0.1496
2017-04-28 2017-03-31 13F SEAGATE TECHNOLOGY PLC SHS Stock G7945M107 26,441 21,038 389.38 1,214 483.65 0.1763
2016-10-07 2016-09-30 13F SEAGATE TECHNOLOGY Stock G7945M107 5,403 -200 -3.57 208 52.94 0.0391
2016-07-27 2016-06-30 13F SEAGATE TECHNOLOGY Stock G7945M107 5,603 1,300 30.21 136 -8.11 0.0309
2016-04-21 2016-03-31 13F SEAGATE TECHNOLOGY Stock G7945M107 4,303 -731 -14.52 148 -20.00 0.0404
2016-01-27 2015-12-31 13F SEAGATE TECHNOLOGY PLC SHS Stock G7945M107 5,034 3,010 148.72 185 103.30 0.0595
2015-10-01 2015-09-30 13F SEAGATE TECHNOLOGY Stock G7945M107 2,024 -6,193 -75.37 91 -76.67 0.0275
2015-07-02 2015-06-30 13F SEAGATE TECHNOLOGY PLC SHS Stock G7945M107 8,217 1,055 14.73 390 3.17 0.1150
2015-04-08 2015-03-31 13F SEAGATE TECHNOLOGY PLC SHS Stock G7945M107 7,162 653 10.03 378 -8.03 0.1044
2015-01-23 2014-12-31 13F SEAGATE TECHNOLOGY PLC SHS Stock G7945M107 6,509 -960 -12.85 411 -3.97 0.1285
2014-10-07 2014-09-30 13F SEAGATE TECHNOLOGY PLC SHS Stock G7945M107 7,469 7,433 20,647.22 428 21,300.00 0.1565
2014-02-13 2013-12-31 13F SEAGATE TECHNOLOGY Stock G7945M107 36 36 2 0.0010
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.