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Marathon Venture Capital

Pre-Seed Seed Series A

Seed-stage fund backing ambitious Greek founders building world-class technology

Athens
Healthtech · Biotech +14
Europe-Focused · Network-Driven

March Capital

Series A Series B Series C

Early-Growth stage firm founded on an enterprise/cyber/India thesis a decade before it was conventional wisdom, known for backing CrowdStrike.

Santa Monica
AI/ML · Enterprise +3
Growth Stage · Thesis-Driven

Market Square Ventures

Pre-Seed Seed

Five Knoxville residents changed Tennessee law to launch this firm, now backing early founders across an overlooked Appalachian region.

Knoxville
AI/ML · Enterprise +7
Early Stage · Operator-Led

Masia

Pre-Seed Seed

Barcelona angel fund backing pre-seed and seed founders across AI, biotech, fintech, defense, and climate tech.

Barcelona
AI/ML · HealthTech +6
No Warm Intro · Founder-Led

MassMutual Ventures

Seed Series A Series B

Helping to build category-defining technology businesses

Boston
Enterprise SaaS · Climate Technology +6
Corporate VC · Global VC

Matrix Partners

Seed Series A Series B

Early-stage VC investing from idea through Series A, backing technical founders with contrarian conviction across multiple sectors.

San Francisco · Cambridge
AI/ML · Infrastructure +7
Operator-Led · Founder-Led

Maveron

Seed Series A Series B

Consumer-only VC backing transformative brands

San Francisco · Seattle +1
Consumer · AI/ML +12
Consumer Brands · Consumer Technology

Max Ventures

Pre-Seed Seed

Early-stage Indian VC backing tech startups

New York
Consumer Tech · Digital Commerce +5
Consumer Tech · Early Stage

Menlo Ventures

Seed Series A Series B

Multi-stage VC investing across AI, enterprise, consumer, healthcare, and fintech since 1976, with major early Anthropic backing.

Menlo Park
AI/ML · Enterprise +8
Multi-Stage · Mega-Fund

Mensch Capital Partners

Pre-Seed Seed

Radical founder support for early-stage companies

Tel Aviv
Enterprise Applications · FinTech +8
AI/ML · SaaS/Software

Mentors Fund

Seed Series A

Collective of 26 exited operators (Screen Hero, Guitar Hero, SquareTrade) who launched a syndicate fund coaching capital-efficient founders disrupting traditional industries.

San Francisco
Data Science & Analytics · AI/ML +11
Angel Group · Operator-Led

Merantix Capital

Pre-Seed Seed Series A

AI-focused venture capital firm backing category-defining technology founders

Berlin
AI-Native Companies · AI/ML +8
AI-Native Companies · Venture Studio

Mercury Fund

Pre-Seed Seed Series A

Houston-based early-stage VC investing in B2B SaaS, data, and AI platforms in underserved US markets across Texas and the Central US.

Houston · Austin +2
B2B SaaS · SaaS/Software +8
Early Stage · Operator-Led

Meritech Capital

Series B Series C Series D

Palo Alto late-stage and growth VC partnering with a handful of category-defining software and technology companies per generation, with 60+ IPOs since 1999.

Palo Alto
SaaS/Software · Enterprise +5
Growth Stage · Late Stage

Meron Capital

Pre-Seed Seed

Founder-led seed fund co-founded by Liron Azrielant and Daniel Roditi, leading first checks for technically difficult Israeli deep tech with a partner-only, no-associates model.

Tel Aviv
AI Infra · AI/ML +11
Israel-Focus · Founder-Led

Metavallon VC

Pre-Seed Seed Series A

Venture capital fund investing in early-stage tech startups tied to Greece

Athens
Transportation · Mobility +26
Greece-Focused · Early Stage

MFG Invest

Pre-Seed Seed Series A

Bulgarian angel-investor collective and publicly listed (Sofia BEAM: MFG) venture arm of Management Financial Group, backing fintech and e-commerce startups like Payhawk.

Sofia
AI/ML · HealthTech +5
Angel Group · Sector-Agnostic

MiddleGame Ventures

Pre-Seed Seed Series A

Luxembourg-based European FinTech VC backing early-stage founders re-architecting financial services, open finance, blockchain, and embedded ESG.

Luxembourg · Dublin +2
Fintech · Blockchain +8
Europe-Focused · Operator-Led

Mindset Ventures

Seed Series A Series B

Brazil-based early-stage VC co-investing in B2B tech startups in the US and Israel, helping portfolio companies expand into Latin America.

Sao Paulo
Fintech · Cybersecurity +6
Thesis-Driven · Sector-Agnostic

MissionOG

Series A Series B

Operator-led B2B investor backing high-growth fintech, data, and AI companies with $5M-$10M Series A checks plus follow-on capital.

Philadelphia
Fintech · Data +4
Operator-Led · Thesis-Driven

Mithril Capital

Series A Series B Series C

Sector- and geography-agnostic long-term fund co-founded by Ajay Royan and Peter Thiel, backing technology teams modernizing industries long overdue for change.

Austin
DeepTech · Enterprise Software +9
Multi-Stage · Thesis-Driven

MizMaa Ventures

Seed Series A Series B

Thesis-driven fund co-founded by Yitz Applbaum and Catherine Leung, bridging Israeli deep-tech entrepreneurs to global markets across Asia and North America.

Tel Aviv · San Francisco +1
Cloud · Cybersecurity +6
Israel-Focus · Thesis-Driven

MMC Ventures

Seed Series A

London-based VC investing in early-stage UK and European AI, fintech, and enterprise technology companies since 2000.

London
AI/ML · Fintech +5
Europe-Focused · Research-Led

Moderne Ventures

Seed Series A

Early-stage VC and accelerator investing in tech companies modernizing real estate, finance, insurance, and home services.

Chicago
PropTech · Fintech +5
Early Stage · Thesis-Driven

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