Matrix

Activity from announced rounds

Activity in this selectionOct 23, 2026 · Edtech · Jan 1, 2026

Matrix, also historically named Matrix Partners, is the US venture firm associated with investors Matt Brown and Stan Reiss.

Recorded funding activity

Its covered companies include Metriport’s patient-data infrastructure, Light’s retail-energy systems and Delos Data’s inference infrastructure. Sila’s battery technology and Optura’s healthcare AI assessment remain separate company investments in the same firm history.

Sources
Rounds participated in
2
Confirmed lead rounds
—
2 roles undisclosed
New companies
2
First participation on record · 0 follow-on
Funding in participating rounds
$29M
2 disclosed · full round size, not this investor’s share

By stage

Seed1
Series A1

By primary sector

Edtech2

By country

United States2

Rounds

2 in this selection
Giant

Interactive storytelling platform for kids to become cartoon characters and design their own worlds

$8MSeed
Role not disclosed
BoldVoice

Provides AI-powered voice coaching for non-native English speakers

$21MSeries A
Role not disclosed