Day One Capital
Venture capitalBudapest · Pre-Seed–Series A
Investment thesis
Day One Capital backs Central and Eastern European founders with conviction capital at the earliest stages, leading and co-leading Pre-Seed and Seed rounds. The firm favors teams rebuilding legacy industries with an AI-first approach, building robots, drones and autonomous systems where hardware does the work, and creating the core systems that keep digital infrastructure secure, reliable and usable across cybersecurity, identity, data infrastructure, observability and foundational software. Given CEE's exposure to cyber, physical and geopolitical threats, it also invests in resilience and defense technologies for governments and critical systems, as well as B2B and prosumer software for studios, agencies and creators. It emphasizes peer-level sparring partnerships with founders.
Source: firm website, verified Aug 7, 2026.
What they invest in
from 1 of 7 portfolio companiesDefense Tech ×1Hardware ×1Robotics ×1
Investments · 7 tracked
founders shown can be your intro pathBudapest, Hungary company building braided, monolithic robotic bodies via a single automated process.
Budapest-based AI avatar platform transforming how the world learns and trains, scaling in the US market.
Skopje, North Macedonia company behind a leading LinkedIn automation platform trusted by 1,100+ companies.
Orqa is a vertically integrated drone technology company that designs and manufactures its own components rather than assembling third-party parts, aiming for a secure and scalable supply chain.
Defense TechHardwareRobotics
Bucharest, Romania firm providing AI-curated APIs for B2B procurement, supplier discovery and risk management.
Brno, Czech Republic provider of secure DNS resolution, including for the EU, with mass-market telco cybersecurity deployments.
Frequently asked questions
- What stage does Day One Capital invest at?
- Day One Capital invests at the Pre-Seed, Seed, Series A stages.
- What is Day One Capital's typical check size?
- Day One Capital typically writes checks of $330K – $2.2M.
- What sectors does Day One Capital focus on?
- Day One Capital focuses on AI & Machine Learning, Biotech, Consumer, Creator Economy, Cybersecurity, Data & Infrastructure, Defense Tech, Enterprise Software, Fintech, Hardware, Healthtech, Media & Entertainment, Medical Devices, Retail Tech, Robotics, SaaS.
- Where is Day One Capital located?
- Day One Capital is headquartered in Budapest, HU.
- Does Day One Capital lead rounds?
- Yes, Day One Capital leads investment rounds.
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