Day One Capital
Venture capitalBudapest · Pre-Seed–Series A
Investment thesis
Day One Capital backs Central and Eastern European founders at the earliest stages, leading and co-leading Pre-Seed and Seed rounds. It focuses on teams rebuilding legacy, manual industries with an AI-first approach; hardware-driven companies building robots, drones, and autonomous systems; core digital infrastructure spanning cybersecurity, identity, data infrastructure, observability, and foundational software; resilience and defense technologies protecting governments and critical systems against cyber, physical, and geopolitical threats; and B2B and prosumer creator tools for studios, agencies, and creators. The firm emphasizes close, peer-level 'sparring partnerships' with founders and has backed original early-stage CEE founders since 2012.
Source: firm website, verified Aug 27, 2026.
What they invest in
from 8 of 11 portfolio companiesSaaS ×6Enterprise Software ×3AI & Machine Learning ×2Deep Tech ×2Hardware ×2Marketing Tech ×2Robotics ×2Cleantech ×1
HQs:Czechia×1United Kingdom×1Croatia×1Hungary×1
Investments · 11 tracked
founders shown can be your intro path
Allonic is a robotics company founded by roboticists and engineers building tools to design and develop robots.
Deep TechHardwareRobotics
David Hollo(Founder)in
Co-investorsKAYAVisionaries Club
Colossyan is an AI video platform that converts expert knowledge into personalized training and enablement videos without editing or production expertise.
AI & Machine LearningEdTechEnterprise SoftwareHR TechSaaSLondon, GB
Dominik Mate Kovacs(Founder)in
Co-investorsEmerge EducationHeartfelt CapitalHEARTFELT_Oktogon VenturesLAUNCHub Ventures
Orqa manufactures the MRM2-10, an NDAA-compliant, EU-made dual-use drone platform built from carbon fibre that carries payloads up to 3.5 kg for tactical and commercial operators.
ConsumerDeep TechDefense TechHardwareRoboticsOsijek, HR
Srdjan KovacevicIvan JelusicVlatko Matijevic
Co-investorsBooz Allen VenturesExpeditionsRadius Capital VenturesTaiwania Capital
Tally is an online form builder that works like a text document, letting users create forms by typing and inserting blocks without code.
Future of WorkMarketing TechSaaS
Marie Martens(Founder)in
Co-investors1991 VenturesAnchorless BangladeshAscensionBloom / Giesen Family OfficeFlori VenturesFoundership Ventures+8 more
Securing millions through DNS-layer cybersecurity
Veridion builds a continuously updated data graph of global companies, tracking what businesses exist, what they do, and how they change over time.
AI & Machine LearningData & InfrastructureEnterprise SoftwareSaaS
Mihai Vinaga(Founder)inFlorin Tufan(Founder)in
Co-investorsOTB VenturesUnderline VenturesLAUNCHub Ventures
Volteum is a fleet intelligence platform that connects to vehicles via OEM APIs to provide real-time data on health, charging, maintenance, and costs across all vehicle types.
CleantechLogistics & Supply ChainMobility & TransportationSaaSBudapest, HU
Co-investorsMovens CapitalOktogon VenturesTechstarsWakeUp Capital
Portfolio news
latest coverage across their companiesVeridion · redding.com · Feb 24, 2026
Frequently asked questions
- How many investments has Day One Capital made?
- Day One Capital has 7 tracked investments.
- 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.
- Who does Day One Capital co-invest with?
- Day One Capital most often shares deals with Ascension, LongJump Ventures, OTB Ventures, among 30 tracked co-investors.
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