201 Ventures
European defense-tech-focused venture capital firm run by Eric Slesinger; portfolio includes Isembard, Polar Mist, and Delian Alliance Industries. (The prior claim that Helsing is a portfolio company was independently verified and refuted -- removed.)
Madrid-based European defense-tech VC founded by Eric Slesinger (ex-CIA, ex-8VC), who began building the firm around October 2023 and publicly launched with a $22M debut fund in April 2025, backed by the NATO Innovation Fund. Backs pre-seed and seed founders working on 'gray zone' technologies: maritime drones, hypersonics, subsurface mapping, and surveillance systems. Portfolio includes Statecraft, Stark, Onodrim, Agon, Zydro, CX2, Polar Mist, Arctic Research & Development, Isembard, Andrenam, Deep Earth, Hypersonica, Ionlace, and Delian Alliance Industries.
Overview
- Firm
- 201 Ventures
- Headquarters
- Madrid, Spain
- Founded
- 2023
- AUM
- $22M (Fund I, publicly launched April 2025); a second fund of up to ~$35M was reported to be in market as of mid-2026
- Stages
- Pre-Seed, Seed
- Thesis
- Advance freedom and autonomy in Europe by backing pre-seed and seed companies leaning into technical risk and ambition: 'when we make a bet, we go all in.'
Portfolio companies11
- CompanyPolar MistSwedish maritime-autonomy startup building Semper, an unmanned surface vessel with a proprietary optical/vision-based, GPS-free navigation system for contested environments.
- CompanyIsembardUK software-first manufacturing company building distributed precision factories for aerospace, defense, and other critical industries.
- CompanyHypersonicaGerman-British startup building Europe's first privately-funded sovereign hypersonic strike capability.
- CompanyDelian Alliance IndustriesUK developer of autonomous anti-access/area denial systems for surveillance and deterrence.
- CompanyStark DefenceBerlin-based loitering munition and strike drone manufacturer for European and NATO forces.
- CompanyOnodrimAmsterdam-based defense industrial platform helping established European defense/industrial producers scale manufacturing capacity, multi-domain sensing, and networked systems.
- CompanyAgonLondon/Berlin-based defense AI startup building synthetic-battlefield infrastructure to train and validate autonomous weapon systems.
- CompanyZydro Marine TechnologiesBoston-based maritime autonomy startup building modular hardware and software building blocks for autonomous fleets at sea.
- CompanyCX2El Segundo, California-based electronic warfare startup building AI-enabled hardware and software for electromagnetic spectrum detection and jamming.
- CompanyArctic Research & DevelopmentUK/US company building software, hardware, and operational systems for defense and government operations in Arctic and high-latitude environments.
- CompanyAndrenaMAI-powered sonar and distributed underwater surveillance systems for defense.
Partners0
No linked records yet.
Frequently asked
- What is 201 Ventures?
- Advance freedom and autonomy in Europe by backing pre-seed and seed companies leaning into technical risk and ambition: 'when we make a bet, we go all in.'
- How much does 201 Ventures manage?
- 201 Ventures manages $22M (Fund I, publicly launched April 2025); a second fund of up to ~$35M was reported to be in market as of mid-2026 in assets, and was founded in 2023.
- What stages does 201 Ventures invest at?
- 201 Ventures invests at Pre-Seed, Seed.
Sources & citations7
Each claim links to its underlying source. Confidence reflects how directly the source supports the claim.
- 1
201 Ventures' own site lists its portfolio, which does not include Helsing.
201 Ventures: 201 VenturesVerified2026-08-08 - 2
201 Ventures, founded by Eric Slesinger, publicly launched with a $22 million debut fund backed by the NATO Innovation Fund.
NATO Innovation Fund: NATO Innovation Fund-backed 201 Ventures launches to advance freedom and autonomy in EuropeVerified2025-04-25 - 3
201 Ventures targets 'gray zone' defense technologies including maritime drones, hypersonics, subsurface mapping, and surveillance systems.
TechCrunch: This American VC is betting on European defense tech; that's still very unusualVerified2025-05-12 - 4
Eric Slesinger said he spent the 18 months before April 2025 building 201 Ventures, dating the firm's founding to around October 2023.
Eric Slesinger (X/Twitter): 201 Ventures launch announcementVerified2025-04-14 - 5
201 Ventures' own portfolio page lists Stark, Onodrim, Agon, Zydro, and CX2 among its portfolio companies
201 Ventures: 201 Ventures PortfolioVerified2026-08-11 - 6
201 Ventures' portfolio includes Arctic Research & Development, a UK/US company building high-latitude autonomy hardware and software for defense, government, research, logistics, and energy clients in the Far North.
201 Ventures: 201 Ventures — PortfolioVerified2026-08-08 - 7
201 Ventures' own portfolio page lists Andrenam (andrenam.com) among its portfolio companies.
201 Ventures: 201 Ventures PortfolioVerified2026-08-11