Seagate Technology Holdings plc
US ˙ NasdaqGS ˙ IE00BKVD2N49

SecuritySTX / Seagate Technology Holdings plc
InstitutionConning Inc.
Latest Disclosed Ownership973 shares
Latest Disclosed Value $ 381,183
Conning Inc. reports 13.51% decrease in ownership of STX / Seagate Technology Holdings plc

On April 30, 2026 - Conning Inc. filed a 13F-HR form disclosing ownership of 973 shares of Seagate Technology Holdings plc (US:STX) valued at $381,182 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 1,125 shares of Seagate Technology Holdings plc. This represents a change in shares of -13.51% during the quarter. The current value of the position is $915,291 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)
2026-04-30 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 973 -152 -13.51 381 23.30 0.0127
2026-02-05 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 1,125 -21 -1.83 310 14.44 0.0104
2025-10-28 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 1,146 1,146 271 0.0090
2021-11-04 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -2,541 -100.00 0 -100.00
2021-07-29 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,541 -261 -9.31 223 3.72 0.0065
2021-04-23 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 2,802 -460 -14.10 215 5.91 0.0065
2021-01-28 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 3,262 3,262 203 0.0064
2019-07-25 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -4,681 -100.00 0 -100.00
2019-04-22 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 4,681 4,681 224 0.0070
2019-01-29 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -5,471 -100.00 0 -100.00
2018-10-26 2018-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 5,471 -680 -11.06 259 -25.36 0.0077
2018-07-25 2018-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 6,151 -370 -5.67 347 -9.16 0.0106
2018-05-03 2018-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 6,521 -68,450 -91.30 382 -86.97 0.0123
2018-01-30 2017-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 74,971 43,048 134.85 2,931 232.31 0.0967
2017-10-20 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 31,923 20,690 184.19 882 102.76 0.0300
2017-08-03 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 11,233 4,363 63.51 435 37.66 0.0158
2017-04-27 2017-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 6,870 -84,240 -92.46 316 -90.91 0.0117
2017-02-02 2016-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 91,110 -380 -0.42 3,478 -1.39 0.1387
2016-10-25 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 91,490 490 0.54 3,527 59.09 0.1406
2016-07-26 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 91,000 190 0.21 2,217 -29.12 0.0915
2016-04-26 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 90,810 10 0.01 3,128 -6.04 0.1313
2016-02-04 2015-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 90,800 -430 -0.47 3,329 -18.55 0.1424
2015-10-23 2015-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 91,230 -1,850 -1.99 4,087 -7.55 0.1795
2015-08-03 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 93,080 84,080 934.22 4,421 844.66 0.1814
2015-04-24 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 9,000 -110 -1.21 468 -22.77 0.0199
2015-02-13 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 9,110 -270 -2.88 606 12.85 0.0296
2014-11-07 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 9,380 1,190 14.53 537 15.48 0.0281
2014-07-25 2014-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 8,190 -520 -5.97 465 -4.91 0.0247
2014-04-25 2014-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 8,710 540 6.61 489 6.54 0.0287
2014-02-04 2013-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 8,170 1,220 17.55 459 50.99 0.0284
2013-11-04 2013-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 6,950 1,170 20.24 304 17.37 0.0235
2013-08-13 2013-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 5,780 5,780 259 0.0214
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.