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
ParticipantSG
StepStone Group
Activity from announced rounds
All recorded activity
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.
- Rounds participated in
- 19
- Confirmed lead rounds
- 0 14 roles undisclosed
- New companies
- 17 First participation on record · 2 follow-on
- Funding in participating rounds
- $6.5B 17 disclosed · full round size, not this investor’s share
By stage
By primary sector
3 more
Defense tech1
Edtech1
Fintech1
By country
Rounds
19 in all activityCrusoe
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 (initial close; anticipated total)
ParticipantClay
A go-to-market platform that combines customer and prospect data with AI research and automation tools for revenue teams.
$115MSeries D
ParticipantFab2
Fab2 develops chipmaking equipment and design software to shorten the path from chip design to fabrication.
$500MSeries A
ParticipantVelaura AI
Develops ultra-low-power silicon for AI data centers and Physical AI systems
$110MSeries A
Role not disclosedMariana Minerals
Builds and operates AI-driven mines and refineries for critical minerals
$310MSeries B
Role not disclosedAntora Energy
Antora Energy makes thermal batteries that store electricity as heat in carbon blocks and deliver continuous energy to industrial facilities and other large users.
$550MSeries C
ParticipantUpscale AI
Provides open-standard AI networking infrastructure for ultra-low-latency training and inference
$190MSeries A+
Role not disclosedEDGE Markets
Provides banking and payment infrastructure for gaming, prediction markets, and crypto trading
$29.2MSeries A
Role not disclosedMultiverse
Trains workforces in AI and tech skills through apprenticeships for enterprise employers
£70MGrowth
Role not disclosedUpscale AI
Provides open-standard AI networking infrastructure for ultra-low-latency training and inference
UndisclosedUndisclosed
Role not disclosedNeuBird AI
Builds agentic AI for enterprise IT operations that automates incident detection and root cause analysis
$19.3MUndisclosed
Role not disclosedMoonbounce
Provides real-time control over AI behavior for organizations
$12MUndisclosed
Role not disclosedSift
Delivers AI data infrastructure for mission-critical machines across space, defense, and autonomy
$42MSeries B
Role not disclosedFrore Systems
Develops advanced thermal cooling technologies for AI data centers and edge devices
$143MSeries D
Role not disclosedKasada
Helps enterprises defend against malicious automation and AI-driven abuse
$20MGrowth
Role not disclosedStandard Nuclear
Produces TRISO nuclear fuel for advanced nuclear reactors
$140MSeries A
Role not disclosedUpscale AI
Provides open-standard AI networking infrastructure for ultra-low-latency training and inference
$200MSeries A
Role not disclosedHadrian
Builds highly automated factories producing defense and aerospace systems
UndisclosedUndisclosed
Role not disclosed