Keysight Technologies, Inc.
US ˙ NYSE ˙ US49338L1035

SecurityKEYS / Keysight Technologies, Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership1,259,164 shares
Latest Disclosed Value $ 355,584,481
Janus Henderson Group Plc reports 42.50% increase in ownership of KEYS / Keysight Technologies, Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 1,259,164 shares of Keysight Technologies, Inc. (US:KEYS) valued at $355,550,139 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 883,643 shares of Keysight Technologies, Inc.. This represents a change in shares of 42.50% during the quarter. The current value of the position is $441,311,799 USD.

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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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)
2026-05-18 2026-03-31 13F/A-1 KEYSIGHT TECHNOLOGIES COM 49338L103 1,259,164 375,521 42.50 355,584 97.97 0.0599
2026-05-15 2026-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 1,259,164 375,521 42.50 355,584 97.97 0.0660
2026-02-17 2025-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 883,643 168,698 23.60 179,613 43.58 0.0804
2025-11-14 2025-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 714,945 94,167 15.17 125,092 22.99 0.0571
2025-08-14 2025-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 620,778 -26,314 -4.07 101,713 4.56 0.0499
2025-05-15 2025-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 647,092 -114,435 -15.03 97,275 -20.51 0.0533
2025-02-14 2024-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 761,527 -71,281 -8.56 122,372 -7.54 0.0622
2024-11-14 2024-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 832,808 -83,568 -9.12 132,347 5.63 0.0677
2024-08-14 2024-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 916,376 -264,460 -22.40 125,294 -32.12 0.0671
2024-05-15 2024-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 1,180,836 -342,021 -22.46 184,590 -23.82 0.1007
2024-02-14 2023-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 1,522,857 802,233 111.32 242,302 154.12 0.1445
2023-11-14 2023-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 720,624 180,641 33.45 95,349 5.45 0.0624
2023-08-14 2023-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 539,983 -493,386 -47.75 90,423 -45.81 0.0562
2023-05-15 2023-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 1,033,369 974,157 1,645.20 166,851 1,547.25 0.1100
2023-02-14 2022-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 59,212 29,019 96.11 10,129 113.11 0.0072
2023-01-13 2022-09-30 13F/A-1 KEYSIGHT TECHNOLOGIES COM 49338L103 30,193 -2,331 -7.17 4,753 5.98 0.0036
2022-11-14 2022-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 30,193 -2,331 4,753 0.0012
2022-08-15 2022-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 32,524 -116,237 -78.14 4,485 -80.92 0.0031
2022-05-16 2022-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 148,761 -328,324 -68.82 23,502 -76.15 0.0113
2022-02-14 2021-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 477,085 325,009 213.71 98,522 294.32 0.0411
2021-11-16 2021-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 152,076 70,612 86.68 24,985 98.62 0.0109
2021-08-16 2021-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 81,464 -157,652 -65.93 12,579 -63.32 0.0054
2021-05-17 2021-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 239,116 6,276 2.70 34,290 11.49 0.0157
2021-02-16 2020-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 232,840 -887,944 -79.23 30,757 -72.21 0.0143
2020-11-16 2020-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 1,120,784 176,006 18.63 110,679 16.25 0.0577
2020-08-14 2020-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 944,778 -411,811 -30.36 95,207 -16.13 0.0534
2020-05-14 2020-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 1,356,589 347,659 34.46 113,522 9.63 0.0781
2020-02-18 2019-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 1,008,930 -219,446 -17.86 103,546 -13.32 0.0530
2019-11-14 2019-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 1,228,376 60,936 5.22 119,460 13.94 0.0647
2019-07-31 2019-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 1,167,440 789,128 208.59 104,848 217.83 0.0571
2019-04-30 2019-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 378,312 -329,374 -46.54 32,989 -24.91 0.0183
2019-02-06 2018-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 707,686 406,778 135.18 43,933 120.28 0.0280
2018-11-09 2018-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 300,908 236,433 366.70 19,944 424.01 0.0107
2018-08-10 2018-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 64,475 28,560 79.52 3,806 102.34 0.0022
2018-05-14 2018-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 35,915 -18,000 -33.39 1,881 -16.14 0.0011
2018-03-12 2017-12-31 13F/A-1 KEYSIGHT TECHNOLOGIES COM 49338L103 53,915 0 0.00 2,243 -0.13 0.0014
2018-02-09 2017-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 53,915 0 2,243
2017-11-14 2017-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 53,915 13,284 32.69 2,246 41.97 0.0014
2017-08-17 2017-06-30 13F/A-1 KEYSIGHT TECHNOLOGIES COM 49338L103 40,631 -168,000 -80.52 1,582 -79.02 0.0011
2017-08-14 2017-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 40,631 -168,000 1,582
2017-05-03 2017-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 208,631 200,000 2,317.23 7,540 2,286.08 0.0529
2017-01-30 2016-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 0 0.00 316 15.75 0.0023
2016-10-24 2016-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 0 0.00 273 8.76 0.0020
2016-07-29 2016-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 0 0.00 251 5.02 0.0021
2016-05-12 2016-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 0 0.00 239 -2.45 0.0019
2016-02-03 2015-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 0 0.00 245 -7.89 0.0020
2015-11-16 2015-09-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 0 0.00 266 -1.12 0.0023
2015-08-17 2015-06-30 13F KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 0 0.00 269 -16.20 0.0021
2015-06-02 2015-03-31 13F/A-1 KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 0 0.00 321 9.93 0.0025
2015-05-15 2015-03-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 321
2015-02-12 2014-12-31 13F KEYSIGHT TECHNOLOGIES COM 49338L103 8,631 8,631 292 0.0021
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.