Day One Ventures is an early-stage venture capital firm that invests in companies focused on AI, climate, enterprise software, fintech/crypto, deep tech, and "The Future of Human" categories. Their strategy uniquely combines investment with hands-on public relations and communications support, utilizing art, storytelling, and culture to accelerate the mass adoption of new technologies and bridge the gap between technology and society.
Deal activity decreased year-over-year (4 deals in the last 12 months vs 8 prior). Their most common stage is seed (41% of deals). Average disclosed round size is $19.5M (across 70 rounds with reported amounts).
Portfolio
70
Fund Size
$450M
Top Stage
Seed
Last 12 Mo
4
Team
ZW
Zsolt Weiszbart
Partner
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
70 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Allonic | Pre-Seed | $7.2M | Feb 2026 |
 ABZ Innovation | Series A | $7M | Jan 2026 |
 Filed | Series A | $17.2M | May 2025 |
 Owner.com | Growth | $120M | May 2025 |
 Artisan | Series A | $25M | Apr 2025 |
| EEpoch Biodesign | Series A | $17M | Mar 2025 |
 Valar Atomics | Seed | $19M | Feb 2025 |
 Abel | Seed | $5M | Oct 2024 |
 NetNow | Pre-Seed | $1.8M | Sep 2024 |
 You.com | Series C | $50M | Sep 2024 |
 Starpath Robotics | Seed | $12M | Aug 2024 |
 Texture | Seed | $7.5M | Apr 2024 |
| HHarness Wealth | Series A | $17M | Mar 2024 |
| MMoonhub | Seed | $10M | Oct 2023 |
| VVibrant Planet | Series A | $15M | Oct 2023 |
 Series | Series A | $25M | Sep 2023 |
| FFlowX.ai | Series A | $35M | May 2023 |
 Two | Series A | $19.5M | Mar 2023 |
 Superplastic | Series A | $20M | Feb 2023 |
 Regie.ai | Series A | $6M | Feb 2023 |
| Regie.ai | Series A | $10M | Sep 2022 |
 Concert Bio | Pre-Seed | $1.7M | Aug 2022 |
| You.com | Series A | $25M | Jul 2022 |
| FFriendly Apps | Seed | $3M | May 2022 |
 Enso | Series A | $16.5M | Apr 2022 |
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Top Co-Investors
Y Combinator7 shared
Khosla Ventures6 shared
Andreessen Horowitz4 shared
Index Ventures4 shared
South Park Commons4 shared
General Catalyst4 shared
Abstract Ventures4 shared
Salesforce3 shared
GV (Google Ventures)3 shared
Foundation Capital3 shared
Scale Venture Partners3 shared
Sequoia Capital3 shared
Initialized Capital3 shared
Shrug Capital3 shared
Betaworks3 shared
Craft Ventures3 shared
Antler2 shared
Neo2 shared
Atman Capital2 shared
SaaStr Fund2 shared
Last updated: 12 April 2026