Seagate Technology Holdings plc
US ˙ NasdaqGS ˙ IE00BKVD2N49

SecuritySTX / Seagate Technology Holdings plc
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership166,523 shares
Latest Disclosed Value $ 65,237,132
Neuberger Berman Group LLC ownership in STX / Seagate Technology Holdings plc

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 166,523 shares of Seagate Technology Holdings plc (US:STX) valued at $65,237,050 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 103,081 shares of Seagate Technology Holdings plc. This represents a change in shares of 61.55% during the quarter. The current value of the position is $156,646,521 USD.

Neuberger Berman Group LLC has a history of taking positions in derivatives of the underlying security (STX) in the form of stock options.

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 HOLDINGS Common G7997R103 166,523 63,442 61.55 65,237 129.81 0.0496
2026-02-13 2025-12-31 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 103,081 -25,290 -19.70 28,387 -6.32 0.0211
2025-11-12 2025-09-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 128,371 -528,897 -80.47 30,303 -67.99 0.0221
2025-08-25 2025-06-30 13F/A-1 SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 657,268 621,764 1,751.25 94,676 3,039.09 0.0729
2025-08-13 2025-06-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 657,268 621,764 94,676 0.0377
2025-05-13 2025-03-31 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 35,504 706 2.03 3,016 0.43 0.0025
2025-02-13 2024-12-31 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 34,798 -5,916 -14.53 3,003 -32.65 0.0024
2024-11-14 2024-09-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 40,714 3,353 8.97 4,459 15.58 0.0035
2024-11-14 2024-06-30 13F/A-1 SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 37,361 1,182 3.27 3,858 14.62 0.0032
2024-08-13 2024-06-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 37,361 1,182 3,858 0.0032
2024-11-14 2024-03-31 13F/A-1 SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 36,179 -1,040 -2.79 3,366 5.95 0.0028
2024-05-13 2024-03-31 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 36,179 -1,040 3,366 0.0028
2024-11-14 2023-12-31 13F/A-2 SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 37,219 1,026 2.83 3,177 33.15 0.0028
2024-02-09 2023-12-31 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 37,219 1,026 3,177 0.0028
2023-11-14 2023-09-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 36,193 -424 -1.16 2,387 5.34 0.0022
2023-08-11 2023-06-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 36,617 -3,143 -7.90 2,265 -13.81 0.0020
2023-05-12 2023-03-31 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 39,760 -760 -1.88 2,629 23.32 0.0024
2023-02-13 2022-12-31 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 40,520 3,780 10.29 2,132 8.84 0.0021
2022-11-15 2022-09-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 36,740 -4,804 -11.56 1,958 -34.36 0.0020
2022-08-15 2022-06-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 41,544 6,224 17.62 2,983 -6.52 0.0030
2022-05-23 2022-03-31 13F/A-1 SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 35,320 -990 -2.73 3,191 -19.90 0.0027
2022-05-13 2022-03-31 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 35,320 -990 3,075 0.0014
2022-02-11 2021-12-31 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 36,310 1,569 4.52 3,984 40.93 0.0031
2021-11-12 2021-09-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 34,741 -3,193 -8.42 2,827 -14.59 0.0025
2021-08-13 2021-06-30 13F SEAGATE TECHNOLOGY HOLDINGS Common G7997R103 37,934 3,576 10.41 3,310 26.58 0.0029
2021-05-13 2021-03-31 13F SEAGATE TECHNOLOGY Common G7945M107 34,358 8,493 32.84 2,615 63.85 0.0025
2021-02-10 2020-12-31 13F SEAGATE TECHNOLOGY Common G7945M107 25,865 -12,177 -32.01 1,596 -14.79 0.0017
2020-11-12 2020-09-30 13F SEAGATE TECHNOLOGY Common G7945M107 38,042 38,042 1,873 0.0022
2019-08-13 2019-06-30 13F SEAGATE TECHNOLOGY Common G7945M107 0 -12,040 -100.00 0 -100.00
2019-05-13 2019-03-31 13F SEAGATE TECHNOLOGY Common G7945M107 12,040 -1,491 -11.02 576 10.34 0.0007
2019-02-12 2018-12-31 13F SEAGATE TECHNOLOGY Common G7945M107 13,531 -6,142 -31.22 522 -43.99 0.0007
2018-11-16 2018-09-30 13F/A-1 SEAGATE TECHNOLOGY Common G7945M107 19,673 12 0.06 932 -18.03 0.0011
2018-11-13 2018-09-30 13F SEAGATE TECHNOLOGY Common G7945M107 19,673 12 932
2018-08-13 2018-06-30 13F SEAGATE TECHNOLOGY Common G7945M107 19,661 -1,707 -7.99 1,137 -9.69 0.0013
2018-05-08 2018-03-31 13F SEAGATE TECHNOLOGY Common G7945M107 21,368 -2,433 -10.22 1,259 26.41 0.0014
2018-02-14 2017-12-31 13F SEAGATE TECHNOLOGY Common G7945M107 23,801 -20,808 -46.65 996 -32.70 0.0011
2017-11-15 2017-09-30 13F SEAGATE TECHNOLOGY COMMON STOCK G7945M107 44,609 -3,609 -7.48 1,480 -20.77 0.0019
2017-08-08 2017-06-30 13F SEAGATE TECHNOLOGY COMMON STOCK G7945M107 48,218 152 0.32 1,868 -15.40 0.0024
2017-05-10 2017-03-31 13F SEAGATE TECHNOLOGY COMMON STOCK G7945M107 48,066 5,131 11.95 2,208 34.72 0.0028
2017-02-06 2016-12-31 13F SEAGATE TECHNOLOGY COMMON STOCK G7945M107 42,935 1,098 2.62 1,639 1.61 0.0022
2016-11-02 2016-09-30 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 41,837 -1,359 -3.15 1,613 53.33 0.0022
2016-08-05 2016-06-30 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 43,196 3,944 10.05 1,052 -22.19 0.0014
2016-05-06 2016-03-31 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 39,252 9,078 30.09 1,352 22.24 0.0019
2016-01-28 2015-12-31 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 30,174 -10,242 -25.34 1,106 -38.93 0.0014
2015-11-10 2015-09-30 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 40,416 4,076 11.22 1,811 4.92 0.0023
2015-07-31 2015-06-30 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 36,340 3,618 11.06 1,726 1.35 0.0019
2015-05-06 2015-03-31 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 32,722 32,722 0.00 1,703 0.0018
2015-02-05 2014-12-31 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 0 -18,106 -100.00 0 -100.00
2014-11-04 2014-09-30 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 18,106 -4,600 -20.26 1,036 -19.69 0.0011
2014-08-05 2014-06-30 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 22,706 -6,205 -21.46 1,290 -20.57 0.0013
2014-05-05 2014-03-31 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 28,911 1,292 4.68 1,624 4.71 0.0017
2014-02-11 2013-12-31 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 27,619 161 0.59 1,551 29.03 0.0016
2013-10-29 2013-09-30 13F/A-1 ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 27,458 -33 -0.12 1,202 -2.44 0.0013
2013-10-29 2013-09-30 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 21,573 582
2013-08-13 2013-06-30 13F ***SEAGATE TECHNOLOGY COMMON STOCK G7945M107 27,491 27,491 1,232 0.0015
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
(%)
2014-02-11 2013-12-31 13F ***SEAGATE TECHNOLOGY PUT Put 0 -100.00 0 -100.00 n/a n/a n/a
2013-10-29 2013-09-30 13F ***SEAGATE TECHNOLOGY PUT Put 17,500 472 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.