Seagate Technology Holdings plc
US ˙ NasdaqGS ˙ IE00BKVD2N49

SecuritySTX / Seagate Technology Holdings plc
InstitutionLevel Four Advisory Services, Llc
Latest Disclosed Ownership7,252 shares
Latest Disclosed Value $ 2,841,318
Level Four Advisory Services, Llc reports 26.85% increase in ownership of STX / Seagate Technology Holdings plc

On May 14, 2026 - Level Four Advisory Services, Llc filed a 13F-HR form disclosing ownership of 7,252 shares of Seagate Technology Holdings plc (US:STX) valued at $2,841,044 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,717 shares of Seagate Technology Holdings plc. This represents a change in shares of 26.85% during the quarter. The current value of the position is $6,821,884 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 7,252 1,535 26.85 2,841 80.50 0.0933
2026-02-13 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 5,717 1,088 23.50 1,575 44.14 0.0515
2025-11-12 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,629 1,560 50.83 1,093 146.50 0.0374
2025-08-13 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,069 -256 -7.70 443 57.09 0.0163
2025-05-14 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,325 -18 -0.54 282 -2.08 0.0116
2025-02-12 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,343 131 4.08 289 -10.56 0.0118
2024-11-14 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,212 699 27.82 322 24.32 0.0136
2024-08-09 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,513 -468 -15.70 260 1.97 0.0117
2024-05-13 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,981 0 0.00 255 0.00 0.0140
2024-02-08 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,981 2,981 255 0.0143
2023-11-13 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -3,446 -100.00 0 -100.00
2023-07-10 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,446 0 0.00 213 -6.17 0.0128
2023-06-05 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,446 3,446 228 0.0149
2022-11-07 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -25,454 -100.00 0 -100.00
2022-08-08 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 25,454 7,356 40.65 1,818 11.74 0.1715
2022-05-10 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 18,098 2,990 19.79 1,627 -4.69 0.1275
2022-02-11 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 15,108 -4,864 -24.35 1,707 3.58 0.1302
2021-10-12 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 19,972 4,940 32.86 1,648 24.66 0.1714
2021-08-09 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 15,032 -5,905 -28.20 1,322 -17.73 0.0914
2021-05-10 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 20,937 -6,700 -24.24 1,607 -6.46 0.1248
2021-02-10 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 27,637 -3,027 -9.87 1,718 13.70 0.1379
2020-11-02 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 30,664 -2,214 -6.73 1,511 -5.27 0.1164
2020-08-17 2020-06-30 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 32,878 1,953 6.32 1,595 5.49 0.1234
2020-05-13 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 30,925 -2,075 -6.29 1,512 -90.15 0.1814
2020-02-13 2019-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 33,000 1,480 4.70 15,351 805.66 0.6078
2019-11-12 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 31,520 25,979 468.85 1,695 549.43 0.1754
2019-08-14 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 5,541 5,541 261 0.0263
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.