Janus Henderson Group plc
DE ˙ DB ˙ JE00BYPZJM29
42,80 € ↑0,20 (0,47%)
2026-06-03
AKTIENPREIS
SecurityDE:HDJA / Janus Henderson Group plc
InstitutionAssetmark, Inc
Latest Disclosed Ownership1,424 shares
Latest Disclosed Value $ 73,151
Assetmark, Inc reports 1.21% increase in ownership of HDJA / Janus Henderson Group plc

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 1,424 shares of Janus Henderson Group plc (DE:HDJA) valued at $60,662 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,407 shares of Janus Henderson Group plc. This represents a change in shares of 1.21% during the quarter. The current value of the position is $60,947 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)
2026-05-06 2026-03-31 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 1,424 17 1.21 73 10.61 0.0001
2026-01-23 2025-12-31 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 1,407 -4,010 -74.03 67 -72.61 0.0001
2025-11-06 2025-09-30 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 5,417 621 12.95 241 29.57 0.0005
2025-08-04 2025-06-30 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 4,796 -505 -9.53 186 -2.62 0.0004
2025-05-06 2025-03-31 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 5,301 -6 -0.11 192 -15.11 0.0005
2025-02-06 2024-12-31 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 5,307 206 4.04 226 15.98 0.0006
2024-11-01 2024-09-30 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 5,101 425 9.09 194 23.57 0.0006
2024-08-13 2024-06-30 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 4,676 -49 -1.04 158 1.29 0.0005
2024-05-07 2024-03-31 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 4,725 -483 -9.27 155 -1.27 0.0005
2024-02-09 2023-12-31 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 5,208 802 18.20 157 38.94 0.0006
2023-10-27 2023-09-30 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 4,406 567 14.77 114 8.65 0.0005
2023-08-11 2023-06-30 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 3,839 949 32.84 105 36.84 0.0004
2023-05-05 2023-03-31 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 2,890 706 32.33 77 49.02 0.0003
2023-02-10 2022-12-31 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 2,184 375 20.73 51 37.84 0.0002
2022-11-01 2022-09-30 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 1,809 416 29.86 37 12.12 0.0002
2022-08-03 2022-06-30 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 1,393 649 87.23 33 26.92 0.0001
2022-05-13 2022-03-31 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 744 357 92.25 26 62.50 0.0001
2022-02-14 2021-12-31 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 387 256 195.42 16 220.00 0.0001
2021-11-12 2021-09-30 13F JANUS HENDERSON GROUP PLC ORD SHS SHS G4474Y214 131 38 40.86 5 25.00 0.0000
2021-08-16 2021-06-30 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 93 33 55.00 4 100.00 0.0000
2021-05-14 2021-03-31 13F JANUS HENDERSON GROUP ORD SHS G4474Y214 60 -102 -62.96 2 -60.00 0.0000
2021-02-10 2020-12-31 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 162 -535 -76.76 5 -66.67 0.0000
2020-11-13 2020-09-30 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 697 589 545.37 15 650.00 0.0001
2020-08-11 2020-06-30 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 108 0 0.00 2 0.00 0.0000
2020-05-12 2020-03-31 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 108 0 0.00 2 -33.33 0.0000
2020-02-11 2019-12-31 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 108 -430 -79.93 3 -75.00 0.0000
2019-11-13 2019-09-30 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 538 -7,414 -93.23 12 -92.94 0.0001
2019-08-14 2019-06-30 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 7,952 3,363 73.28 170 47.83 0.0014
2019-05-14 2019-03-31 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 4,589 -620 -11.90 115 6.48 0.0010
2019-02-13 2018-12-31 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 5,209 413 8.61 108 -16.28 0.0010
2018-11-13 2018-09-30 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 4,796 138 2.96 129 -9.79 0.0012
2018-08-01 2018-06-30 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 4,658 -455 -8.90 143 -15.38 0.0014
2018-05-16 2018-03-31 13F JANUS HENDERSON GROUP PLC ORD SHS ORD SHS G4474Y214 5,113 5,113 169 0.0017
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.