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MCJ — Portfolio, Page 2

Investor actively backing innovative startups and growth-stage companies across various industries and funding rounds.

56
Companies
$355.9M
Total invested
$7.4M
Avg. check
69
Industries
Energy 5Renewable Energy 5Sustainability 5Software 5Artificial Intelligence (AI) 4GreenTech 3+63 more
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Portfolio companies

Showing 2548 of 56
Rhizome
May 2025

Rhizome is helping electric utilities assess and prevent climate-induced power grid failures.

Artificial Intelligence (AI) · Washington$6.5M Seed
Fourier
April 2025

Fourier is develops a modular and fully automated hydrogen production system.

Energy · Palo Alto$18.6M Series A
Arch
February 2024

Arch is a vertical SaaS company that leverages AI to optimize and finance sustainable HVAC systems.

Embedded Software · San Francisco$6.2M Seed
Opna
September 2023

Opna is a financing platform for climate projects that reduce carbon emissions and protect ecosystems.

B2B · London$6.5M Seed
Evergrow
April 2023

Evergrow is a climate fintech company that aims to be the first dedicated carbon offtake company.

Finance · San Francisco$7.0M Seed
Lun
March 2023

Lun builds software to decarbonise homes faster.

Green Building · Copenhagen$11.2M Seed
Sense
January 2026

Sense specializes in tracking devices and home automation solutions for its customers.

Consumer Electronics · CambridgeCorporate Round
Unlimited Industries
December 2025

Unlimited Industries transforms how critical infrastructure is engineered and delivered, accelerating a future of abundance with AI-powered.

Artificial Intelligence (AI) · San Francisco$12.0M Seed
Artyc PBC
December 2024

Artyc offers cold shipping of biotech, pharmaceutical, and medical goods.

Analytics · San FranciscoConvertible Note
Farm
December 2021

Farm is a platform for investing in agricultural land.

Agriculture · Fort Collins$920K Pre-Seed
MicroByre
January 2022

MicroByre is a biotechnology company that specializes in microbiology, synthetic biology, molecular biology, and machine learning..

Bioinformatics · Berkeley$14.7M Series A
AirLoom Energy
October 2024

AirLoom Energy offers wind energy harvesting services.

Energy · Laramie$7.5M Seed
Energetic Capital
October 2024

Energetic Capital provides renewable energy financing services for commercial and industrial projects.

Big Data · BostonVenture - Series Unknown
Yard Stick
October 2023

Yard Stick is an in-situ soil carbon measurement technology that offers quantification of soil carbon stocks.

Agriculture · CambridgeConvertible Note
WattBuy
October 2021

WattBuy is a clean energy platform that empowers enterprises to help their customers choose affordable, clean energy options for their home.

CleanTech · New York$11.2M Series A
Archimetis
February 2026

Archimetis provides an AI-powered operational reasoning system for energy, chemical, pharma, and industrial plants.

Agentic AI · South San Francisco$11.5M Series Unknown
Kodama Systems
October 2025

Restoring forests for future generations

Forestry · Sonora$7.0M Seed
Cirplus
February 2024

B2B Marketplace for circular plastics

Internet · HamburgSeries Unknown
Helio Home
May 2023

Helio makes transition off fossil fuels and fully electrify their homes

Home Improvement · DenverSeed
Phuc Labs
April 2023

Phuc Labs implements robotics to automate the method of identifying, separating, and reclaiming particles from water.

Recycling · BostonSeed
Kopperfield
September 2022

Solving online commerce for home electrification

Battery · Seattle$5.0M Seed
Cloud to Street
September 2022

Cloud to Street is a satellite and AI platform to track floods in near real-time anywhere on earth.

Artificial Intelligence (AI) · New York$12.0M Series A
Carbon Collective
April 2022

Carbon Collective is a financials services company.

Financial Services · Albany$2.2M Seed
HoloLab
August 2019

Holo Lab is a technology firm that specializes in licensed package products, system development, and laser scanning photogrammetry services.

Application Performance Management · Tokyo$1.7M Series Unknown

Where MCJ invests

Energy5
Renewable Energy5
Sustainability5
Software5
Artificial Intelligence (AI)4
GreenTech3

About MCJ's portfolio

How many companies has MCJ invested in?

MCJ has invested in 56 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.

What industries does MCJ invest in?

MCJ's top investment sectors include Energy, Renewable Energy, Sustainability, Software, Artificial Intelligence (AI). The firm invests across 69 different industry categories.

What is MCJ's largest investment?

Among tracked funding rounds, Fourier received $18.6M in a Series A round. MCJ's total known invested capital is $355.9M.

What is the average investment size for MCJ?

MCJ's average investment size is $7.4M across its portfolio of 56 companies.

What are MCJ's most recent investments?

Recent MCJ portfolio additions include Rhizome, Fourier, Arch, Opna, Evergrow. These companies were founded in 2020 or later.

Reach the founders behind these 56 companies
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