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The Venture Codex

MCJ Collective

867 Boylston Street 5th floor #1407, Boston, MA, 02116, United States

Overview

Invests in startups driving clean energy and industrial transition.

Founded

2019

Deals ยท 12mo

9

Links

WebsiteLinkedInX (Twitter)

Stage focus

Seed
Series A

Geographic focus

United States

Sector focus

Business Development
Finance
Financial Services
Information Technology
...

Investment portfolio

67rounds
NAMEDATESIZE
Light
Sep 2026Participated
$46 MSeries A
Odyssey
Sep 2026Participated
$74 MDebt
Reservoir
Aug 2026Participated
$8 MSeed
Red Metals
Jun 2026Participated
$10 MSeed
Archimetis
Mar 2026Participated
$12 MOther Equity
DG Matrix
Feb 2026Participated
$60 MSeries A
Overstory
Nov 2025Participated
$43 MSeries B
Hammerhead AI
Nov 2025Participated
$10 MSeed
Crusoe Energy Systems
Oct 2025Participated
$1.4 BSeries E
Rodatherm
Sep 2025Participated
$38 MSeries A
Aalo Atomics
Aug 2025Participated
$100 MSeries B
LGND
Jul 2025Participated
$9 MSeed
Light
Sep 2026Participated
$46 MSeries A
Odyssey
Sep 2026Participated
$74 MDebt
Reservoir
Aug 2026Participated
$8 MSeed
Red Metals
Jun 2026Participated
$10 MSeed
Archimetis
Mar 2026Participated
$12 MOther Equity
DG Matrix
Feb 2026Participated
$60 MSeries A
Overstory
Nov 2025Participated
$43 MSeries B
Hammerhead AI
Nov 2025Participated
$10 MSeed
Crusoe Energy Systems
Oct 2025Participated
$1.4 BSeries E
Rodatherm
Sep 2025Participated
$38 MSeries A
Aalo Atomics
Aug 2025Participated
$100 MSeries B
LGND
Jul 2025Participated
$9 MSeed
67
Items
...
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Insights

Time horizon

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Deal Distribution

MCJ Collective: 67 funding rounds are recorded in the selected participation categories.All available history.
MCJ Collective: 67 funding rounds are recorded in the selected participation categories. All available history
Round typeLed dealsParticipated deals
Seed024
Series A024
Series B06
Series C+05
Other Equity14
Debt03

Monthly Deal Activity

MCJ Collective: 67 deals are recorded across 111 months.All available history.
MCJ Collective: 67 deals are recorded across 111 months. All available history
MonthDeals
Aug '171
Sep '170
Oct '170
Nov '170
Dec '170
Jan '180
Feb '180
Mar '180
Apr '180
May '180
Jun '180
Jul '180
Aug '180
Sep '180
Oct '180
Nov '180
Dec '180
Jan '190
Feb '190
Mar '190
Apr '190
May '190
Jun '190
Jul '190
Aug '190
Sep '190
Oct '190
Nov '190
Dec '190
Jan '200
Feb '200
Mar '200
Apr '200
May '200
Jun '200
Jul '200
Aug '200
Sep '200
Oct '200
Nov '200
Dec '201
Jan '210
Feb '212
Mar '210
Apr '211
May '210
Jun '210
Jul '210
Aug '213
Sep '211
Oct '213
Nov '213
Dec '211
Jan '220
Feb '220
Mar '223
Apr '222
May '222
Jun '222
Jul '221
Aug '220
Sep '222
Oct '221
Nov '223
Dec '221
Jan '230
Feb '230
Mar '232
Apr '232
May '233
Jun '230
Jul '231
Aug '230
Sep '231
Oct '230
Nov '231
Dec '230
Jan '240
Feb '241
Mar '240
Apr '241
May '241
Jun '240
Jul '240
Aug '240
Sep '243
Oct '240
Nov '240
Dec '241
Jan '251
Feb '250
Mar '250
Apr '252
May '252
Jun '250
Jul '251
Aug '251
Sep '251
Oct '251
Nov '252
Dec '250
Jan '260
Feb '261
Mar '261
Apr '260
May '260
Jun '261
Jul '260
Aug '261
Sep '262
Oct '260

Sector Breakdown

MCJ Collective: Clean Energy & Sustainability is the largest displayed sector by deal count (48 deals).All available history.

A deal can appear in multiple sectors, so sector totals may overlap. Capital represents disclosed total round sizes, not fund cheque sizes.

MCJ Collective: Clean Energy & Sustainability is the largest displayed sector by deal count (48 deals). All available history
SectorDeals
Clean Energy & Sustainability48
Enterprise Software20
AI & Machine Learning13
Manufacturing11
Data, Analytics & IT9
Real Estate & Construction8
Transportation & Logistics8
Food & Agriculture7
Space & Frontier Tech6
Networks, Cloud & Communication5
Fintech5
E-Commerce & Retail4
Health & Life Sciences4
Professional Services4
Hardware & Robotics2
Travel & Hospitality1
Education & Workforce1
Cybersecurity & Privacy1
AR/VR1
Consumer & Lifestyle1
Marketing & Advertising1
Social & Community Platforms1
Developer Tools1

Deal Size Distribution

MCJ Collective: 67 rounds have a disclosed size in the displayed size bands.All available history.

Undisclosed round sizes are excluded. Capital represents total round sizes, not fund cheque sizes.

MCJ Collective: 67 rounds have a disclosed size in the displayed size bands. All available history
Round size band (USD)Deals
<$5M6
$5M-$10M16
$10M-$25M22
$25M-$50M11
$50M-$100M4
$100M-$250M6
$250M-$500M0
$500M-$1B1
$1B+1

Deals By Geography

MCJ Collective: United States has the largest recorded deal count among the displayed regions (59 deals).All available history.

Top 3 of 3 regions; European countries are grouped as Europe.

MCJ Collective: United States has the largest recorded deal count among the displayed regions (59 deals). All available history
RegionDeals
United States59
Europe6
Canada2
MCJ Collective: 20 co-investors are shown, with Lowercarbon Capital sharing 16 recorded deals.All available history.

Co-Investors

Bubble size = shared deals

Click a bubble to open that fund in a new tab.

Shows up to 20 co-investors ranked by shared deals. Deals may be shared with multiple funds, so rows overlap. Capital is total round size, not fund cheque size.

MCJ Collective: 20 co-investors are shown, with Lowercarbon Capital sharing 16 recorded deals. All available history
Co-investorShared deals
Lowercarbon Capital16
Climate Capital9
Congruent Ventures7
BoxGroup6
Breakthrough Energy Ventures6
Energy Impact Partners5
Equal Ventures5
Union Square Ventures5
Coatue4
Collaborative Fund4
Fine Structure Ventures4
Founders Fund4
Salesforce Ventures4
Abstract Ventures3
Activate Capital3
Alumni Ventures3
Amazon3
Engine Ventures3
Founder Collective3
Future Positive3

Investment Strategy

MCJ Collective: Led accounts for 1% and participating for 99% of round participation.All available history.
MCJ Collective: Led accounts for 1% and participating for 99% of round participation. All available history
CategoryDeals (count)Share (%)
Led11%
Participating6699%
MCJ Collective: Single-lead accounts for 0% and co-led for 100% of lead dynamics.All available history.
MCJ Collective: Single-lead accounts for 0% and co-led for 100% of lead dynamics. All available history
CategoryDeals (count)Share (%)
Single-lead00%
Co-led1100%

Team

Cody Simms

Managing Partner

Jason Jacobs

Partner