Seagate Technology Holdings plc
US ˙ NasdaqGS ˙ IE00BKVD2N49

SecuritySTX / Seagate Technology Holdings plc
InstitutionGts Securities Llc
Latest Disclosed Ownership1,947 shares
Latest Disclosed Value $ 762,757
Gts Securities Llc ownership in STX / Seagate Technology Holdings plc

On May 14, 2026 - Gts Securities Llc filed a 13F-HR form disclosing ownership of 1,947 shares of Seagate Technology Holdings plc (US:STX) valued at $762,757 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,961 shares of Seagate Technology Holdings plc. This represents a change in shares of -34.25% during the quarter. The current value of the position is $1,650,024 USD.

Gts Securities Llc 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)
2026-05-14 2026-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 1,947 -1,014 -34.25 763 -6.50 0.0270
2026-02-13 2025-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 2,961 2,961 815 0.0278
2025-05-15 2025-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 0 -3,704 -100.00 0 -100.00
2025-02-18 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,704 -32,609 -89.80 320 -91.98 0.0156
2024-11-13 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 36,313 13,739 60.86 3,977 70.61 0.0086
2024-08-14 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 22,574 11,404 102.09 2,331 124.35 0.0050
2024-05-15 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 11,170 7,743 225.94 1,039 255.82 0.0019
2024-02-15 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 3,427 -12,546 -78.55 293 -72.27 0.0005
2023-11-15 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 15,973 -53,541 -77.02 1,053 -75.51 0.0019
2023-08-16 2023-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS G7997R103 69,514 69,514 4,301 0.1359
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
(%)
2025-02-18 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-13 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 52,400 -11.19 5,739 -5.79 n/a n/a n/a
2024-08-14 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 59,000 -5.90 6,093 4.42 n/a n/a n/a
2024-05-15 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 62,700 -19.20 5,834 -11.93 n/a n/a n/a
2024-02-15 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 77,600 15.99 6,625 50.14 n/a n/a n/a
2023-11-15 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Call 66,900 4,412 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
(%)
2025-02-18 2024-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-13 2024-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 49,200 -15.61 5,389 -10.50 n/a n/a n/a
2024-08-14 2024-06-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 58,300 61.94 6,021 79.76 n/a n/a n/a
2024-05-15 2024-03-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 36,000 -76.61 3,350 -74.51 n/a n/a n/a
2024-02-15 2023-12-31 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 153,900 -5.06 13,138 22.90 n/a n/a n/a
2023-11-15 2023-09-30 13F SEAGATE TECHNOLOGY HLDNGS PL ORD SHS Put 162,100 10,690 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.