Firms
Day One Capital
Budapest-based early-stage venture capital firm backing founders from Central and Eastern Europe and their diaspora. Leads and co-leads pre-seed and seed rounds in AI-native software, robotics, drones, cybersecurity, data infrastructure, defense and creative-industry technology. Its team supports companies in building products and expanding into global markets.
- Founded
- 2012
- Type
- Venture capital
Funds1
Team
Operations and support
Co-investing
Credo Ventures
Commsignia$11M · 2019-08-15- Spaceflow$1M · 2019-08-06
Brighteye Ventures
imagi$4M · 2026-07-23
DFF Ventures
Qneiform€3M · 2025-03-11
OTB Ventures
Veridion$6M · 2023-02-21
Partech- Commsignia$11M · 2019-08-15
PortfoLion Capital Partners
FLOWX.AI$35M · 2023-05-22
Romain Lavault- Commsignia$11M · 2019-08-15
Samsung Catalyst Fund- Commsignia$11M · 2019-08-15
Tommy Oehl
ABZ Innovation€7M · 2026-01-22
Vsquared Ventures- ABZ Innovation€7M · 2026-01-22
Investments
| €1M2026-09-18 |  Plora | Day One Capital |
| $4M2026-07-23 | imagi | Brighteye Ventures, Day One Capital |
| $7M2026-02-10 |  Allonic | Day One Capital |
| €550K2026-02-04 |  Resoloon | Day One Capital |
| €7M2026-01-22 | ABZ Innovation | Vsquared Ventures, Day One Capital, Tommy Oehl |
| €3M2025-03-11 | Qneiform | Day One Capital, DFF Ventures |
| €2M2024-12-12 |  Perciv AI | Day One Capital |
| $35M2023-05-22 | FLOWX.AI | Day One Capital, PortfoLion Capital Partners |
| $6M2023-02-21 | Veridion | Day One Capital, OTB Ventures |
| $—2021-07-21 |  Colossyan | Day One Capital |
| $11M2019-08-15 | Commsignia | Samsung Catalyst Fund, Credo Ventures, Day One Capital, Partech, Romain Lavault |
| $—Unknown date |  Synetiq | Day One Capital |
| $—Unknown date |  NOW technologies | Day One Capital |
| $—Unknown date |  Kinestica | Day One Capital |
| $—Unknown date |  Volteum | Day One Capital |
| $—2025-02-18 | Whalebone | Day One Capital |
| $1M2019-08-06 | Spaceflow | Credo Ventures, Day One Capital |