Funding
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Union Square Ventures

Activity from announced rounds

Activity in this selectionOct 24, 2026 · Hardware · Jan 1, 2026

Union Square Ventures is the venture firm explicitly named by Nous Research and Efficient Computer.

Recorded funding activity

Nous develops open models and agents. Efficient develops processors, while Rune deploys computing at renewable-energy sites. The company records retain separate technologies and financing events.

Sources
Rounds participated in
5
Confirmed lead rounds
0
2 roles undisclosed
New companies
4
First participation on record · 1 follow-on
Funding in participating rounds
$220M
4 disclosed · full round size, not this investor’s share

By stage

Series A3
Seed1
Undisclosed1

By primary sector

Hardware3
Climate tech2

By country

United States5

Rounds

5 in this selection
Mana Battery

Mana Battery develops anode-free sodium-ion cells and proprietary electrolytes for battery manufacturers.

UndisclosedSeed financing (investment amount undisclosed)
Participant
Efficient Computer

Efficient Computer develops general-purpose data-flow processors and software tools for computing and AI systems.

$100MAdditional funding
Participant
Rune

A modular clean-compute platform that deploys GPU clusters at renewable-energy sites without building a conventional data center.

$40MSeries A
Participant
Board

Builds interactive gaming devices blending board games with video games

$20MSeries A
Role not disclosed
Efficient Computer

Efficient Computer develops general-purpose data-flow processors and software tools for computing and AI systems.

$60MSeries A
Role not disclosed