Quiet Capital

Activity from announced rounds

Activity in this selectionOct 22, 2026 · AI · Jan 1, 2026

Quiet Capital is the venture firm named by RWX and Thatch in their financing announcements.

Recorded funding activity

RWX supplies cloud environments for testing agent-developed software. Thatch manages employee-directed health benefits, while Polyphron develops micro-tissue models for drug research. The company histories preserve these distinct applications.

Sources
Rounds participated in
11
Confirmed lead rounds
2
7 roles undisclosed
New companies
11
First participation on record · 0 follow-on
Funding in participating rounds
$695M
11 disclosed · full round size, not this investor’s share

By stage

Series A4
Seed3
Series C+2
Series B1
Undisclosed1

By primary sector

Healthtech3
Enterprise software2
Biotech1
Defense tech1
Developer tools1
3 more
Fintech1
Logistics1
Proptech1

By country

United States10
United Kingdom1

Rounds

11 in this selection
Mach9

AI CAD software that turns laser scans and imagery into engineering drawings for infrastructure projects.

$34MSeries A
Participant
Homa

Homa combines an AI homebuying platform with licensed brokerage services in the United States.

$5MSeed
Lead
Polyphron

An AI-guided tissue-engineering platform that grows human micro-tissues and models their responses to support drug research and development.

$20MSeed
Lead
Thatch

A health-benefits platform that lets employers set healthcare budgets while employees choose insurance and eligible care to fit their needs.

$108MNew funding
Participant
RWX

Dev cloud platform for validating and testing AI-driven software engineering

$12MSeries A
Role not disclosed
Intropy

AI-native platform automating inventory, pricing and other critical decisions for spare parts businesses

$11MSeed
Role not disclosed
Arch

Arch helps investors, advisers and family offices administer private-market portfolios by collecting documents, standardizing data and coordinating investment workflows.

$52MSeries B
Role not disclosed
Assort Health

Provides AI-powered patient journey platform for healthcare organizations

$120MSeries C
Role not disclosed
Quartermaster

Equips ships with sensor packages and analytics to create a distributed real-time maritime intelligence network

$43MSeries A
Role not disclosed
Manifest OS

Powers AI-native law firms with outcomes-based fixed pricing and predictable quality

$60MSeries A
Role not disclosed
Science Corporation

Develops brain-computer interface retinal implants to restore vision in patients with retinal diseases

$230MSeries C
Role not disclosed