Seagate Technology Holdings plc
DE ˙ XTRA ˙ IE00BKVD2N49
38,91 € ↓ -0,56 (-1,41%)
2017-05-15
DEL PRIS
SecurityDE:STT / Seagate Technology Holdings plc
InstitutionHighTower Advisors, LLC
Latest Disclosed Ownership70,025 shares
Latest Disclosed Value $ 27,433,410
HighTower Advisors, LLC ownership in STT / Seagate Technology Holdings plc

On May 5, 2026 - HighTower Advisors, LLC filed a 13F-HR form disclosing ownership of 70,025 shares of Seagate Technology Holdings plc (DE:STT) valued at $27,433,410 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 73,728 shares of Seagate Technology Holdings plc. This represents a change in shares of -5.02% during the quarter. The current value of the position is $2,724,673 USD.

HighTower Advisors, LLC 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)
2026-05-05 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 70,025 -3,703 -5.02 27,433 35.11 0.0291
2026-02-06 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 73,728 -188 -0.25 20,304 16.37 0.0222
2025-11-07 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 73,916 -3,156 -4.09 17,448 56.86 0.0198
2025-08-11 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 77,072 1,613 2.14 11,124 73.53 0.0139
2025-05-13 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 75,459 -9,761 -11.45 6,410 -12.85 0.0087
2025-02-07 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 85,220 -200,390 -70.16 7,355 -76.48 0.0101
2024-11-14 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 285,610 54,341 23.50 31,270 30.77 0.0447
2024-08-13 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 231,269 159,399 221.79 23,912 257.96 0.0370
2024-05-06 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 71,870 -2,506 -3.37 6,680 5.33 0.0108
2024-02-12 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 74,376 -13,092 -14.97 6,342 9.70 0.0106
2023-11-08 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 87,468 1,333 1.55 5,781 8.38 0.0109
2023-08-14 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 86,135 -17,736 -17.08 5,334 -22.37 0.0105
2023-05-12 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 103,871 4,350 4.37 6,871 31.33 0.0150
2023-02-09 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 99,521 1,025 1.04 5,232 -0.42 0.0120
2022-11-09 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 98,496 -11,962 -10.83 5,254 -33.65 0.0141
2022-08-10 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 110,458 -96,654 -46.67 7,919 -57.47 0.0205
2022-05-12 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 207,112 62,030 42.76 18,618 13.80 0.0415
2022-02-10 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 145,082 30,786 26.94 16,361 73.32 0.0359
2021-11-12 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 114,296 -10,243 -8.22 9,440 -13.83 0.0253
2021-08-06 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 124,539 -281,925 -69.36 10,955 -64.86 0.0317
2021-05-10 2021-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 406,464 -106,977 -20.84 31,172 -2.21 0.0984
2021-02-10 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 513,441 325,714 173.50 31,875 244.67 0.1328
2020-11-13 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 187,727 49,440 35.75 9,248 38.13 0.0447
2020-08-10 2020-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 138,287 2,548 1.88 6,695 1.21 0.0365
2020-05-21 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 135,739 37,748 38.52 6,615 13.39 0.0429
2020-02-14 2019-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 97,991 10,581 12.11 5,834 23.97 0.0345
2019-11-12 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 87,410 -29,083 -24.97 4,706 -13.98 0.0256
2019-08-13 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 116,493 -4,114 -3.41 5,471 -4.87 0.0326
2019-05-15 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 120,607 17,220 16.66 5,751 43.95 0.0384
2019-02-14 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 103,387 12,174 13.35 3,995 -7.22 0.0306
2018-11-09 2018-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 91,213 -3,437 -3.63 4,306 -19.44 0.0310
2018-08-14 2018-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 94,650 -151 -0.16 5,345 -3.87 0.0419
2018-05-15 2018-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 94,801 11,028 13.16 5,560 58.40 0.0466
2018-02-14 2017-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 83,773 8,729 11.63 3,510 40.63 0.0288
2017-11-14 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 75,044 34,299 84.18 2,496 58.07 0.0213
2017-09-22 2017-06-30 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 40,745 -13,191 -24.46 1,579 -36.38 0.0141
2017-08-14 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 40,745 -13,191 1,579
2017-05-15 2017-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 53,936 -45,230 -45.61 2,482 -34.43 0.0238
2017-02-10 2016-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 99,166 -11,728 -10.58 3,785 -11.57 0.0411
2016-11-14 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 110,894 11,527 11.60 4,280 77.01 0.0496
2016-08-11 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 99,367 -71,311 -41.78 2,418 -58.96 0.0306
2016-05-16 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 170,678 106,323 165.21 5,892 149.34 0.0192
2016-05-18 2015-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 64,355 6,445 11.13 2,363 -8.73 0.0281
2016-02-12 2015-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 64,355 2,363
2015-11-16 2015-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 57,910 -20,726 -26.36 2,589 -30.68 0.0343
2015-08-11 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 78,636 66,267 535.75 3,735 479.97 0.0599
2015-05-15 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 12,369 2,099 20.44 644 -5.71 0.0096
2015-02-17 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 10,270 -2,324 -18.45 683 -5.27 0.0105
2014-11-14 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 12,594 677 5.68 721 6.50 0.0122
2014-08-13 2014-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 11,917 -33,951 -74.02 677 -73.72 0.0117
2014-05-15 2014-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 45,868 -1,417 -3.00 2,576 -3.01 0.0503
2014-02-14 2013-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 47,285 1,678 3.68 2,656 33.07 0.0546
2013-11-15 2013-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 45,607 32,544 249.13 1,996 240.61 0.0500
2013-08-14 2013-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 13,063 13,063 586 0.0159
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
(%)
2016-11-14 2016-09-30 13F SEAGATE TECHNOLOGY SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-08-11 2016-06-30 13F SEAGATE TECHNOLOGY SHS Call 1,000 3 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
(%)
2022-08-10 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-12 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 1 1 n/a n/a n/a
2021-08-06 2021-06-30 13F SEAGATE TECHNOLOGY SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-10 2021-03-31 13F SEAGATE TECHNOLOGY SHS Put 4 2 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.