Quiet Capital

Activity from announced rounds

Activity in this selectionUnited States · Oct 23, 2026 · 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
$784M
11 disclosed · full round size, not this investor’s share

By stage

Series A4
Series C+3
Seed2
Series B1
Undisclosed1

By primary sector

Healthtech3
Biotech2
Enterprise software2
Defense tech1
Developer tools1
2 more
Fintech1
Proptech1

By country

United States11

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
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
Loyal

Loyal develops medicines intended to extend dogs’ lifespans.

$100MSeries C
Role not disclosed