StepStone Group

Activity from announced rounds

Activity in this selectionmentors-fund-5fad8e7a
Rounds participated in
18
Confirmed lead rounds
0
15 roles undisclosed
New companies
16
First participation on record · 2 follow-on
Funding in participating rounds
$2.1B
15 disclosed · full round size, not this investor’s share

By stage

Series A5
Series C+5
Undisclosed4
Growth2
Series B2

By primary sector

AI6
Hardware4
Climate tech2
Industrial tech2
Cybersecurity1
3 more
Defense tech1
Edtech1
Fintech1

By country

United States17
United Kingdom1

Rounds

18 in this selection
SiMa.ai

SiMa.ai builds a full-stack physical AI platform that combines purpose-built silicon and software to help developers deploy machine learning on real-world devices.

$150MSeries C
Participant
Crusoe

AI infrastructure combining GPU cloud services, managed AI tools, large-scale data centers and modular AI factories for model developers and enterprises.

>$3.9BSeries F
Participant
Clay

A go-to-market platform that combines customer and prospect data with AI research and automation tools for revenue teams.

$115MSeries D
Participant
Velaura AI

Develops ultra-low-power silicon for AI data centers and Physical AI systems

$110MSeries A
Role not disclosed
Mariana Minerals

Builds and operates AI-driven mines and refineries for critical minerals

$310MSeries B
Role not disclosed
Antora Energy

Delivers affordable, reliable energy to industry, data centers, and the grid.

$550MSeries C
Role not disclosed
Upscale AI

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

$190MSeries A+
Role not disclosed
EDGE Markets

Provides banking and payment infrastructure for gaming, prediction markets, and crypto trading

$29.2MSeries A
Role not disclosed
Multiverse

Trains workforces in AI and tech skills through apprenticeships for enterprise employers

£70MGrowth
Role not disclosed
Upscale AI

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

UndisclosedUndisclosed
Role not disclosed
NeuBird AI

Builds agentic AI for enterprise IT operations that automates incident detection and root cause analysis

$19.3MUndisclosed
Role not disclosed
Moonbounce

Provides real-time control over AI behavior for organizations

$12MUndisclosed
Role not disclosed
Sift

Delivers AI data infrastructure for mission-critical machines across space, defense, and autonomy

$42MSeries B
Role not disclosed
Frore Systems

Develops advanced thermal cooling technologies for AI data centers and edge devices

$143MSeries D
Role not disclosed
Kasada

Helps enterprises defend against malicious automation and AI-driven abuse

$20MGrowth
Role not disclosed
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