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J2 Ventures

24 School Street, 2nd Floor, Boston, Massachusetts, 02108, United States

Overview

Venture capital firm focused on dual-use technology for security and commer

Founded

2020

Deals · 12mo

12

Links

WebsiteLinkedIn

Stage focus

Seed
Series A

Geographic focus

United States

Sector focus

—

Investment portfolio

30rounds
NAMEDATESIZE
Mesa Quantum
Sep 2026Participated
$12 MSeed
InfiniG
Aug 2026Led
$5 MSeed
Inner Logic
Jul 2026Participated
$12 MSeed
Arkenstone Defense
Jul 2026Led
$35 MSeed
Sazabi
Jun 2026Led
$8 MSeed
Principal Mineral
Jun 2026Participated
$280 MOther Equity
Flashpass
Apr 2026Led
$4 MSeed
Aalyria
Feb 2026Led
$100 MSeries B
Code Metal
Feb 2026Participated
$125 MSeries B
SkyFi
Jan 2026Participated
$13 MSeries A
Lumia Health
Nov 2025Participated
$7 MOther Equity
Code Metal
Nov 2025Participated
$37 MSeries A
Mesa Quantum
Sep 2026Participated
$12 MSeed
InfiniG
Aug 2026Led
$5 MSeed
Inner Logic
Jul 2026Participated
$12 MSeed
Arkenstone Defense
Jul 2026Led
$35 MSeed
Sazabi
Jun 2026Led
$8 MSeed
Principal Mineral
Jun 2026Participated
$280 MOther Equity
Flashpass
Apr 2026Led
$4 MSeed
Aalyria
Feb 2026Led
$100 MSeries B
Code Metal
Feb 2026Participated
$125 MSeries B
SkyFi
Jan 2026Participated
$13 MSeries A
Lumia Health
Nov 2025Participated
$7 MOther Equity
Code Metal
Nov 2025Participated
$37 MSeries A
30
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Insights

Time horizon

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Deal Distribution

J2 Ventures: 30 funding rounds are recorded in the selected participation categories.All available history.
J2 Ventures: 30 funding rounds are recorded in the selected participation categories. All available history
Round typeLed dealsParticipated deals
Seed125
Series A34
Series B13
Other Equity02

Monthly Deal Activity

J2 Ventures: 30 deals are recorded across 59 months.All available history.
J2 Ventures: 30 deals are recorded across 59 months. All available history
MonthDeals
Dec '211
Jan '220
Feb '220
Mar '220
Apr '220
May '220
Jun '220
Jul '220
Aug '220
Sep '221
Oct '221
Nov '220
Dec '220
Jan '230
Feb '230
Mar '230
Apr '230
May '233
Jun '231
Jul '230
Aug '230
Sep '230
Oct '230
Nov '231
Dec '230
Jan '241
Feb '240
Mar '240
Apr '240
May '240
Jun '241
Jul '240
Aug '240
Sep '243
Oct '240
Nov '241
Dec '240
Jan '252
Feb '251
Mar '250
Apr '250
May '250
Jun '250
Jul '250
Aug '250
Sep '251
Oct '250
Nov '252
Dec '250
Jan '261
Feb '262
Mar '260
Apr '261
May '260
Jun '262
Jul '262
Aug '261
Sep '261
Oct '260

Sector Breakdown

J2 Ventures: AI & Machine Learning is the largest displayed sector by deal count (11 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.

J2 Ventures: AI & Machine Learning is the largest displayed sector by deal count (11 deals). All available history
SectorDeals
AI & Machine Learning11
Enterprise Software9
Health & Life Sciences9
Hardware & Robotics8
Space & Frontier Tech7
Manufacturing6
Cybersecurity & Privacy4
Networks, Cloud & Communication4
Data, Analytics & IT3
Transportation & Logistics3
Government & Defense2
Consumer & Lifestyle2
Social & Community Platforms2
Developer Tools2
Media & Entertainment1
Professional Services1
Gaming & eSports1

Deal Size Distribution

J2 Ventures: 30 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.

J2 Ventures: 30 rounds have a disclosed size in the displayed size bands. All available history
Round size band (USD)Deals
<$5M5
$5M-$10M13
$10M-$25M5
$25M-$50M2
$50M-$100M1
$100M-$250M3
$250M-$500M1
$500M-$1B0
$1B+0

Deals By Geography

J2 Ventures: United States has the largest recorded deal count among the displayed regions (29 deals).All available history.

Top 2 of 2 regions; European countries are grouped as Europe.

J2 Ventures: United States has the largest recorded deal count among the displayed regions (29 deals). All available history
RegionDeals
United States29
Europe1
J2 Ventures: 20 co-investors are shown, with Andreessen Horowitz sharing 3 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.

J2 Ventures: 20 co-investors are shown, with Andreessen Horowitz sharing 3 recorded deals. All available history
Co-investorShared deals
Andreessen Horowitz3
Overmatch Ventures3
Shield Capital3
8VC2
Accel2
BonAngels2
Gaingels2
RTX Ventures2
Smith Point Capital2
Village Global2
XYZ Venture Capital2
AE Ventures1
Alumni Ventures1
AMED Ventures1
Amino Capital1
ARTIS Ventures1
Avalon Capital Group1
B Capital Group1
Balerion Space Ventures1
Battery Ventures1

Investment Strategy

J2 Ventures: Led accounts for 53% and participating for 47% of round participation.All available history.
J2 Ventures: Led accounts for 53% and participating for 47% of round participation. All available history
CategoryDeals (count)Share (%)
Led1653%
Participating1447%
J2 Ventures: Single-lead accounts for 63% and co-led for 38% of lead dynamics.All available history.
J2 Ventures: Single-lead accounts for 63% and co-led for 38% of lead dynamics. All available history
CategoryDeals (count)Share (%)
Single-lead1063%
Co-led638%

Team

Alexander Harstrick
Christine Keung
Dr. Matt Goldman

Senior HOH Fellow

Jonathan Bronson

Co-founder and Managing Partner

Tom Hennessey

Co-Founder&Venture Partner