StepStone Group

Activity from announced rounds

Activity in this selectionJan 31, 2026 · Jan 1, 2026

StepStone Group is a private-markets investment manager whose venture and growth platform spans seed through growth equity, combining fund investments, direct investments and secondaries.

Its direct investment practice uses relationships with venture and growth fund managers, proprietary data and a global team to evaluate companies. This sits alongside its role as an investor in those managers’ funds.

The platform can participate in new company financings and in secondary transactions involving existing ownership. Founders should distinguish the capital needs of the business from shareholder liquidity when considering which part of StepStone’s investment model is relevant.

Sources
Rounds participated in
3
Confirmed lead rounds
—
3 roles undisclosed
New companies
3
First participation on record · 0 follow-on
Funding in participating rounds
$340M
2 disclosed · full round size, not this investor’s share

By stage

Series A2
Undisclosed1

By primary sector

AI1
Climate tech1
Industrial tech1

By country

United States3

Rounds

3 in this selection
Standard Nuclear

Produces TRISO nuclear fuel for advanced nuclear reactors

$140MSeries A
Role not disclosed
Upscale AI

Provides open-standard AI networking infrastructure for ultra-low-latency training and inference

$200MSeries A
Role not disclosed
Hadrian

Builds highly automated factories producing defense and aerospace systems

UndisclosedUndisclosed
Role not disclosed