Matrix

Activity from announced rounds

Activity in this selectionOct 24, 2026 · Healthtech · 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
3
Confirmed lead rounds
0
2 roles undisclosed
New companies
3
First participation on record · 0 follow-on
Funding in participating rounds
$163.5M
3 disclosed · full round size, not this investor’s share

By stage

Series A2
Series B1

By primary sector

Healthtech3

By country

United States3

Rounds

3 in this selection
General Medicine

An online healthcare store where people compare care options and upfront prices, book visits and order medications or lab tests.

$120MSeries B
Participant
Metriport

Open-source healthcare data infrastructure unifying patient records for clinicians

$26MSeries A
Role not disclosed
Optura

Provides ROAI platform for healthcare organizations to assess AI business value and viability

$17.5MSeries A
Role not disclosed