Seagate Technology Holdings plc
US ˙ NasdaqGS ˙ IE00BKVD2N49

SecuritySTX / Seagate Technology Holdings plc
InstitutionSignaturefd, Llc
Latest Disclosed Ownership4,559 shares
Latest Disclosed Value $ 1,786,043
Signaturefd, Llc reports 5.85% increase in ownership of STX / Seagate Technology Holdings plc

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 4,559 shares of Seagate Technology Holdings plc (US:STX) valued at $1,786,034 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 4,307 shares of Seagate Technology Holdings plc. This represents a change in shares of 5.85% during the quarter. The current value of the position is $3,863,616 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)
2026-04-07 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,559 252 5.85 1,786 50.59 0.0274
2026-01-20 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,307 -137 -3.08 1,186 13.06 0.0181
2025-10-21 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,444 -643 -12.64 1,049 42.92 0.0165
2025-07-16 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 5,087 54 1.07 734 71.90 0.0125
2025-05-02 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 5,033 45 0.90 428 -0.70 0.0081
2025-02-10 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,988 113 2.32 431 -19.32 0.0082
2024-10-21 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,875 600 14.04 534 20.86 0.0102
2024-07-29 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,275 -2 -0.05 441 11.08 0.0090
2024-05-03 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,277 75 1.78 398 10.89 0.0084
2024-02-01 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,202 -19 -0.45 359 28.78 0.0083
2023-11-03 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,221 99 2.40 278 9.02 0.0073
2023-08-01 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,122 82 2.03 255 -4.49 0.0065
2023-04-28 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,040 -166 -3.95 267 20.81 0.0073
2023-01-30 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,206 86 2.09 221 0.91 0.0065
2022-11-08 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,120 -452 -9.89 219 -33.03 0.0075
2022-08-10 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,572 -75 -1.61 327 -21.77 0.0111
2022-05-02 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,647 -160 -3.33 418 -23.02 0.0126
2022-01-25 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,807 -419 -8.02 543 25.99 0.0167
2021-10-28 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 5,226 513 10.88 431 4.11 0.0149
2021-07-26 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 4,713 233 5.20 414 20.35 0.0165
2021-04-30 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 4,480 371 9.03 344 34.90 0.0152
2021-02-11 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 4,109 38 0.93 255 26.87 0.0120
2020-11-03 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 4,071 717 21.38 201 24.07 0.0108
2020-07-30 2020-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 3,354 -40 -1.18 162 -2.41 0.0098
2020-04-23 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,394 513 17.81 166 -2.92 0.0143
2020-02-05 2019-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 2,881 -327 -10.19 171 -1.16 0.0126
2019-10-16 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 3,208 1 0.03 173 14.57 0.0142
2019-07-31 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 3,207 -98 -2.97 151 -4.43 0.0131
2019-05-09 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,305 -4,055 -55.10 158 -44.37 0.0134
2019-02-13 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 7,360 394 5.66 284 -13.94 0.0265
2018-11-14 2018-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 6,966 360 5.45 330 -11.53 0.0335
2018-08-14 2018-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 6,606 -211 -3.10 373 -6.52 0.0416
2018-05-08 2018-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 6,817 167 2.51 399 43.53 0.0468
2018-02-13 2017-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 6,650 92 1.40 278 27.52 0.0335
2017-11-14 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 6,558 6,558 218 0.0289
2017-02-14 2016-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -2,470 -100.00 0 -100.00
2016-11-14 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 2,470 604 32.37 95 111.11 0.0139
2016-07-29 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,866 145 8.43 45 -23.73 0.0066
2016-05-12 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 1,721 -24 -1.38 59 -7.81 0.0101
2016-01-22 2015-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 1,745 81 4.87 64 -14.67 0.0124
2015-10-23 2015-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,664 40 2.46 75 -2.60 0.0171
2015-07-15 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,624 0 0.00 77 -8.33 0.0167
2015-04-15 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 1,624 0 0.00 84 -22.22 0.0204
2015-02-13 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 1,624 -290 -15.15 108 -1.82 0.0269
2014-11-13 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,914 290 17.86 110 19.57 0.0358
2014-08-14 2014-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 1,624 800 97.09 92 100.00 0.0320
2014-05-16 2014-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 824 800 3,333.33 46 4,500.00 0.0185
2014-02-11 2013-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 24 0 0.00 1 0.00 0.0004
2013-11-13 2013-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 24 -200 -89.29 1 -90.00 0.0004
2013-08-14 2013-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 224 224 10 0.0052
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.