StepStone Group Inc.
US ˙ NasdaqGS ˙ US85914M1071

SecuritySTEP / StepStone Group Inc.
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership29,998 shares
Latest Disclosed Value $ 1,432,704
Janus Henderson Group Plc ownership in STEP / StepStone Group Inc.

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 29,998 shares of StepStone Group Inc. (US:STEP) valued at $1,431,505 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 29,998 shares of StepStone Group Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $1,308,813 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 STEPSTONE GROUP COM CL A 85914M107 29,998 0 0.00 1,433 -25.53 0.0002
2026-05-15 2026-03-31 13F STEPSTONE GROUP COM CL A 85914M107 29,998 0 1,433 0.0003
2026-02-17 2025-12-31 13F STEPSTONE GROUP COM CL A 85914M107 29,998 0 0.00 1,924 -1.84 0.0009
2025-11-14 2025-09-30 13F STEPSTONE GROUP COM CL A 85914M107 29,998 0 0.00 1,959 17.66 0.0009
2025-08-14 2025-06-30 13F STEPSTONE GROUP COM CL A 85914M107 29,998 0 0.00 1,665 7.28 0.0008
2025-05-15 2025-03-31 13F STEPSTONE GROUP COM CL A 85914M107 29,998 0 0.00 1,553 -10.65 0.0009
2025-02-14 2024-12-31 13F STEPSTONE GROUP COM CL A 85914M107 29,998 5,600 22.95 1,737 25.32 0.0009
2024-11-14 2024-09-30 13F STEPSTONE GROUP COM CL A 85914M107 24,398 -23,083 -48.62 1,387 -36.36 0.0007
2024-08-14 2024-06-30 13F STEPSTONE GROUP COM CL A 85914M107 47,481 22,811 92.46 2,178 147.50 0.0012
2024-05-15 2024-03-31 13F STEPSTONE GROUP COM CL A 85914M107 24,670 9 0.04 881 12.10 0.0005
2024-02-14 2023-12-31 13F STEPSTONE GROUP COM CL A 85914M107 24,661 -40 -0.16 785 0.64 0.0005
2023-11-14 2023-09-30 13F STEPSTONE GROUP COM CL A 85914M107 24,701 7 0.03 780 27.45 0.0005
2023-08-14 2023-06-30 13F STEPSTONE GROUP COM CL A 85914M107 24,694 -14,916 -37.66 612 -36.25 0.0004
2023-05-15 2023-03-31 13F STEPSTONE GROUP COM CL A 85914M107 39,610 22,304 128.88 961 120.69 0.0006
2023-02-14 2022-12-31 13F STEPSTONE GROUP COM CL A 85914M107 17,306 -1,646 -8.69 436 -6.25 0.0003
2023-01-13 2022-09-30 13F/A-1 STEPSTONE GROUP COM CL A 85914M107 18,952 536 2.91 464 -3.13 0.0003
2022-11-14 2022-09-30 13F STEPSTONE GROUP COM CL A 85914M107 18,952 536 464 0.0001
2022-08-15 2022-06-30 13F STEPSTONE GROUP COM CL A 85914M107 18,416 2,994 19.41 479 -6.08 0.0003
2022-05-16 2022-03-31 13F STEPSTONE GROUP COM CL A 85914M107 15,422 -197 -1.26 510 -21.54 0.0002
2022-02-14 2021-12-31 13F STEPSTONE GROUP COM CL A 85914M107 15,619 6,960 80.38 650 76.15 0.0003
2021-11-16 2021-09-30 13F STEPSTONE GROUP COM CL A 85914M107 8,659 8,659 369 0.0002
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.