Seagate Technology Holdings plc
US ˙ NasdaqGS ˙ IE00BKVD2N49

SecuritySTX / Seagate Technology Holdings plc
InstitutionCreative Planning
Latest Disclosed Ownership62,735 shares
Latest Disclosed Value $ 24,577,017
Creative Planning ownership in STX / Seagate Technology Holdings plc

On May 12, 2026 - Creative Planning filed a 13F-HR form disclosing ownership of 62,735 shares of Seagate Technology Holdings plc (US:STX) valued at $24,577,064 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 58,824 shares of Seagate Technology Holdings plc. This represents a change in shares of 6.65% during the quarter. The current value of the position is $59,014,187 USD.

Creative Planning has a history of taking positions in derivatives of the underlying security (STX) 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.

STX / 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)
2026-05-12 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 62,735 3,911 6.65 24,577 51.72 0.0167
2026-02-17 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 58,824 2,684 4.78 16,199 22.24 0.0116
2025-11-14 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 56,140 6,337 12.72 13,252 84.36 0.0101
2025-08-08 2025-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 49,803 1,147 2.36 7,188 73.92 0.0061
2025-05-15 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 48,656 -876 -1.77 4,133 -3.32 0.0039
2025-02-14 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 49,532 2,043 4.30 4,275 -17.80 0.0042
2024-10-11 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 47,489 -224 -0.47 5,202 5.56 0.0051
2024-08-15 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 47,713 2,846 6.34 4,927 18.01 0.0053
2024-05-13 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 44,867 4,199 10.33 4,175 20.25 0.0046
2024-02-14 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 40,668 2,161 5.61 3,472 36.75 0.0064
2023-11-16 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 38,507 -2,570 -6.26 2,540 -0.08 0.0034
2023-07-21 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 41,077 7,161 21.11 2,541 13.34 0.0034
2023-05-15 2023-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 33,916 -2,867 -7.79 2,243 15.87 0.0032
2023-02-10 2022-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 36,783 229 0.63 1,935 -0.57 0.0029
2022-11-03 2022-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 36,554 -1,108 -2.94 1,946 -27.68 0.0034
2022-08-15 2022-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 37,662 1,381 3.81 2,691 -17.50 0.0044
2022-05-16 2022-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 36,281 -6,864 -15.91 3,262 -33.07 0.0051
2022-02-11 2021-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 43,145 -5,841 -11.92 4,874 20.58 0.0078
2021-11-10 2021-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 48,986 843 1.75 4,042 -4.51 0.0072
2021-08-04 2021-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 48,143 -1,502 -3.03 4,233 11.10 0.0075
2021-04-30 2021-03-31 13F CreativePlanning SHS G7945M107 49,645 2,743 5.85 3,810 30.70 0.0077
2021-01-29 2020-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 46,902 392 0.84 2,915 27.18 0.0064
2020-11-05 2020-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 46,510 -9,203 -16.52 2,292 -15.02 0.0060
2020-07-23 2020-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 55,713 123 0.22 2,697 -0.59 0.0078
2020-05-05 2020-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 55,590 1,581 2.93 2,713 -15.59 0.0096
2020-01-30 2019-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 54,009 -957 -1.74 3,214 8.69 0.0096
2019-11-01 2019-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 54,966 -1,357 -2.41 2,957 11.42 0.0096
2019-07-26 2019-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 56,323 -1,780 -3.06 2,654 -4.64 0.0089
2019-04-24 2019-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 58,103 2,712 4.90 2,783 30.17 0.0100
2019-02-12 2018-12-31 13F/A-1 SEAGATE TECHNOLOGY SHS G7945M107 55,391 6,714 13.79 2,138 -7.25 0.0088
2019-02-01 2018-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 55,391 6,714 2,138
2018-10-25 2018-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 48,677 8,809 22.10 2,305 2.40 0.0086
2018-07-20 2018-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 39,868 -847 -2.08 2,251 -5.54 0.0088
2018-04-18 2018-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 40,715 -5,781 -12.43 2,383 22.52 0.0097
2018-01-17 2017-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 46,496 806 1.76 1,945 28.30 0.0084
2017-10-17 2017-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 45,690 -1,080 -2.31 1,516 -16.38 0.0070
2017-07-12 2017-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 46,770 590 1.28 1,813 -14.52 0.0092
2017-04-07 2017-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 46,180 3,449 8.07 2,121 30.04 0.0116
2017-01-09 2016-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 42,731 -11,761 -21.58 1,631 -22.37 0.0099
2016-10-12 2016-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 54,492 -3,403 -5.88 2,101 49.01 0.0134
2016-07-12 2016-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 57,895 9,772 20.31 1,410 -14.96 0.0102
2016-04-08 2016-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 48,123 -727 -1.49 1,658 -7.43 0.0129
2016-01-11 2015-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 48,850 -441 -0.89 1,791 -18.89 0.0147
2015-10-09 2015-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 49,291 4,518 10.09 2,208 3.81 0.0195
2015-07-09 2015-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 44,773 -1,490 -3.22 2,127 -11.63 0.0193
2015-04-13 2015-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 46,263 46,263 0.00 2,407 0.0226
2015-01-29 2014-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 0 -37,215 -100.00 0 -100.00
2014-10-10 2014-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 37,215 22,728 156.89 2,131 158.93 0.0247
2014-08-20 2014-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 14,487 752 5.48 823 6.74 0.0107
2014-04-11 2014-03-31 13F SEAGATE TECHNOLOGY SHS G7945M107 13,735 298 2.22 771 2.12 0.0116
2014-01-06 2013-12-31 13F SEAGATE TECHNOLOGY SHS G7945M107 13,437 1,304 10.75 755 42.18 0.0129
2013-10-10 2013-09-30 13F SEAGATE TECHNOLOGY SHS G7945M107 12,133 105 0.87 531 -1.48 0.0105
2013-07-09 2013-06-30 13F SEAGATE TECHNOLOGY SHS G7945M107 12,028 12,028 539 0.0125
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
(%)
2015-01-29 2014-12-31 13F SEAGATE TECHNOLOGY SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-10-10 2014-09-30 13F SEAGATE TECHNOLOGY SHS Call 200 1 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
(%)
2026-02-17 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-14 2025-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 300 1 n/a n/a n/a
2018-10-25 2018-09-30 13F SEAGATE TECHNOLOGY SHS Put 0 -100.00 0 n/a n/a n/a
2018-07-20 2018-06-30 13F SEAGATE TECHNOLOGY SHS Put 1,200 0 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.