Seagate Technology Holdings plc
DE ˙ XTRA ˙ IE00BKVD2N49
38,91 € ↓ -0,56 (-1,41%)
2017-05-15
DEL PRIS
SecurityDE:STT / Seagate Technology Holdings plc
InstitutionHsbc Holdings Plc
Latest Disclosed Ownership378,527 shares
Latest Disclosed Value $ 147,753,150
Hsbc Holdings Plc ownership in STT / Seagate Technology Holdings plc

On April 30, 2026 - Hsbc Holdings Plc filed a 13F-HR form disclosing ownership of 378,527 shares of Seagate Technology Holdings plc (DE:STT) valued at $147,753,150 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 20, 2026 disclosing 172,331 shares of Seagate Technology Holdings plc. This represents a change in shares of 119.65% during the quarter. The current value of the position is $14,728,486 USD.

Hsbc Holdings Plc has a history of taking positions in derivatives of the underlying security (STT) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:STT / Seagate Technology Holdings plc Historical Put/Call Ratio
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 378,527 206,196 119.65 147,753 210.55 0.0103
2026-03-20 2025-12-31 13F/A-1 SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 172,331 85,246 97.89 47,579 135.19 0.0026
2026-03-06 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 172,331 85,246 97.89 47,579 135.19 0.0022
2025-11-13 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 87,085 2,756 3.27 20,231 67.38 0.0112
2025-08-13 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 84,329 -34,920 -29.28 12,086 21.43 0.0073
2025-05-14 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 119,249 -116,114 -49.33 9,953 -50.91 0.0062
2025-02-14 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 235,363 98,208 71.60 20,275 35.91 0.0118
2024-11-14 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 137,155 18,632 15.72 14,917 21.13 0.0087
2024-08-12 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 118,523 22,334 23.22 12,316 37.60 0.0075
2024-05-15 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 96,189 70,332 272.00 8,950 304.25 0.0061
2024-02-12 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 25,857 -7,606 -22.73 2,215 0.50 0.0019
2023-11-13 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 33,463 -134,963 -80.13 2,203 -78.89 0.0023
2023-08-11 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 168,426 144,608 607.14 10,439 566.11 0.0106
2023-05-15 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 23,818 -49,361 -67.45 1,568 -58.96 0.0019
2023-02-14 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 73,179 49,248 205.79 3,819 195.05 0.0044
2022-11-14 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 23,931 1,305 5.77 1,294 -20.37 0.0021
2022-08-11 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 22,626 -10,721 -32.15 1,625 -46.63 0.0023
2022-05-16 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 33,347 23,581 241.46 3,045 175.07 0.0037
2022-02-11 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 9,766 -33,713 -77.54 1,107 -69.21 0.0010
2021-11-12 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 43,479 43,479 3,595 0.0036
2021-08-13 2021-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -21,067 -100.00 0 -100.00
2021-05-14 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 21,067 -56,634 -72.89 1,630 -66.05 0.0019
2021-02-25 2020-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 77,701 -26,900 -25.72 4,801 -7.51 0.0064
2021-02-12 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 154,401 49,800 9,540 2,265.1467
2020-11-12 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 104,601 -92,169 -46.84 5,191 -45.51 0.0083
2020-08-14 2020-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 196,770 58,357 42.16 9,526 38.78 0.0181
2020-05-15 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 138,413 92,792 203.40 6,864 152.91 0.0159
2020-02-14 2019-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 45,621 27,806 156.08 2,714 183.30 0.0047
2019-11-14 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 17,815 -72,133 -80.19 958 -77.39 0.0018
2019-08-13 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 89,948 -16,542 -15.53 4,238 -16.90 0.0080
2019-05-15 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 106,490 63,522 147.84 5,100 207.60 0.0093
2019-02-13 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 42,968 -122,003 -73.95 1,658 -78.77 0.0031
2018-11-13 2018-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 164,971 -95,353 -36.63 7,811 -46.87 0.0126
2018-08-10 2018-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 260,324 234,906 924.17 14,701 888.63 0.0262
2018-05-11 2018-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 25,418 -70,628 -73.54 1,487 -63.00 0.0022
2018-02-14 2017-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 96,046 -67,999 -41.45 4,019 -26.13 0.0058
2017-11-14 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 164,045 147,262 877.45 5,441 737.08 0.0087
2017-08-14 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 16,783 9,463 129.28 650 93.45 0.0012
2017-05-15 2017-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 7,320 -34,150 -82.35 336 -78.77 0.0007
2017-02-09 2016-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 41,470 20,655 99.23 1,583 97.38 0.0037
2016-11-14 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 20,815 -27,300 -56.74 802 -31.57 0.0020
2016-08-12 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 48,115 25,065 108.74 1,172 47.61 0.0032
2016-05-13 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 23,050 3,457 17.64 794 10.58 0.0022
2016-02-12 2015-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 19,593 233 1.20 718 -17.19 0.0017
2015-11-12 2015-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 19,360 -129,934 -87.03 867 -87.77 0.0022
2015-08-13 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 149,294 -35,799 -19.34 7,091 -26.37 0.0145
2015-05-14 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 185,093 46,372 33.43 9,630 4.39 0.0185
2015-02-13 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 138,721 33,091 31.33 9,225 52.50 0.0191
2014-11-18 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 105,630 11,674 12.42 6,049 13.30 0.0127
2014-08-14 2014-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 93,956 -15,778 -14.38 5,339 -13.37 0.0115
2014-05-14 2014-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 109,734 42,445 63.08 6,163 63.09 0.0147
2014-02-14 2013-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 67,289 -9,342 -12.19 3,779 12.67 0.0098
2013-11-14 2013-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 76,631 -7,956 -9.41 3,354 -11.55 0.0092
2013-10-10 2013-06-30 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 84,587 33,203 64.62 3,792 101.81 0.0115
2013-08-14 2013-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 84,587 3,792
2013-10-10 2013-03-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 51,384 40,441 369.56 1,879 464.26 0.0068
2013-05-22 2013-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 54,874 2,007
2013-06-17 2012-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 11,788 11,788 358 0.0014
2013-10-10 2012-12-31 13F/A-2 SEAGATE TECHNOLOGY SHS G7945M107 10,943 10,943 -7.17 333 -6.98 0.0013
2013-10-11 2012-09-30 13F/A-2 SEAGATE TECHNOLOGY SHS G7945M107 0 -296,536 -100.00 0 -100.00
2013-10-11 2012-06-30 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 296,536 12,253 4.31 7,333 -4.28 0.0332
2013-10-11 2012-03-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 284,283 284,283 7,661 0.0336
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2024-05-15 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-02-12 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 14,500 302.78 1,242 426.27 n/a n/a n/a
2023-11-13 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 3,600 0.00 237 5.83 n/a n/a n/a
2023-08-11 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 3,600 0.00 223 -5.91 n/a n/a n/a
2023-05-15 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 3,600 -37.93 237 -21.52 n/a n/a n/a
2023-02-14 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 5,800 0.00 303 -3.82 n/a n/a n/a
2022-11-14 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 5,800 0.00 314 -24.70 n/a n/a n/a
2022-08-11 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 5,800 0.00 417 -21.32 n/a n/a n/a
2022-05-16 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 5,800 -76.98 530 -81.46 n/a n/a n/a
2022-02-11 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 25,200 20.00 2,858 64.54 n/a n/a n/a
2021-11-12 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 21,000 1,737 n/a n/a n/a
2021-08-13 2021-06-30 13F SEAGATE TECHNOLOGY SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-14 2021-03-31 13F SEAGATE TECHNOLOGY SHS Call 48,500 62.21 3,751 102.98 n/a n/a n/a
2021-02-25 2020-12-31 13F/A SEAGATE TECHNOLOGY SHS Call 29,900 1,848 n/a n/a n/a
2021-02-12 2020-12-31 13F SEAGATE TECHNOLOGY SHS Call 29,900 1,848 n/a n/a n/a
2020-05-15 2020-03-31 13F SEAGATE TECHNOLOGY SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F SEAGATE TECHNOLOGY SHS Call 35,100 2,088 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2024-08-12 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-15 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 17,100 -35.23 1,591 -29.63 n/a n/a n/a
2024-02-12 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 26,400 52.60 2,262 98.68 n/a n/a n/a
2023-11-13 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 17,300 82.11 1,139 93.54 n/a n/a n/a
2023-08-11 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 9,500 -66.07 589 -68.10 n/a n/a n/a
2023-05-15 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 28,000 188.66 1,843 264.23 n/a n/a n/a
2023-02-14 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 9,700 11.49 506 7.43 n/a n/a n/a
2022-11-14 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 8,700 102.33 471 52.43 n/a n/a n/a
2022-08-11 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 4,300 0.00 309 -21.37 n/a n/a n/a
2022-05-16 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 4,300 -90.93 393 -92.69 n/a n/a n/a
2022-02-11 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 47,400 -3.66 5,375 32.10 n/a n/a n/a
2021-11-12 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 49,200 4,069 n/a n/a n/a
2021-08-13 2021-06-30 13F SEAGATE TECHNOLOGY SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-14 2021-03-31 13F SEAGATE TECHNOLOGY SHS Put 7,900 -89.70 611 -87.11 n/a n/a n/a
2021-02-25 2020-12-31 13F/A SEAGATE TECHNOLOGY SHS Put 76,700 4,693.75 4,739 5,898.73 n/a n/a n/a
2020-11-12 2020-09-30 13F SEAGATE TECHNOLOGY SHS Put 1,600 79 n/a n/a n/a
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.