Day One Ventures is an early-stage venture capital firm founded by Masha Bucher in 2018, based in San Francisco. The firm backs customer-obsessed companies and spearheads their communications, combining investment with hands-on PR and storytelling support to accelerate mass adoption of technologies.
Deal activity decreased year-over-year (4 deals in the last 12 months vs 8 prior). Their most common stage is seed (44% of deals). Average disclosed round size is $18.0M (across 89 rounds with reported amounts).
Portfolio
85
Fund Size
$150M
Top Stage
Seed
Last 12 Mo
4
Team
MB
Masha Bucher
General Partner
AW
Avik Wadhwa
Investor
DR
Drake Rehfeld
Leading fund finance and operations
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
109 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 imagi | Seed | $4.5M | Jul 2026 |
 Allonic | Pre-Seed | — | Feb 2026 |
 ABZ Innovation | Series A | — | Jan 2026 |
 Yuzu Health | Series A | $35M | Jan 2026 |
 Valar Atomics | Growth | $130M | Nov 2025 |
 Filed | Series A | $17.2M | May 2025 |
 Owner.com | Growth | — | May 2025 |
 Artisan | Series A | — | Apr 2025 |
| Valar Atomics | Seed | $19M | Feb 2025 |
| WWhalebone | Unknown | — | Feb 2025 |
| SSuperpower Health | Series A | $30M | Jan 2025 |
 Owner | Seed | $120M | Jan 2025 |
| Owner.com | Seed | $10.7M | Jan 2025 |
 Abel | Seed | $5M | Oct 2024 |
 NetNow | Pre-Seed | $1.8M | Sep 2024 |
 You.com | Series C | — | Sep 2024 |
 Starpath Robotics | Seed | $12M | Aug 2024 |
 Texture | Seed | — | Apr 2024 |
 Symbolica | Series A | $33M | Apr 2024 |
| Symbolica | Seed | $33M | Apr 2024 |
 Harness Wealth | Series A | $17M | Mar 2024 |
 Esper | Pre-Seed | $1M | Mar 2024 |
 Colossyan | Series A | $22M | Feb 2024 |
 Wasted | Seed | $5.7M | Jan 2024 |
 Moonhub | Seed | — | Oct 2023 |
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Top Co-Investors
Y Combinator16 shared
Khosla Ventures9 shared
General Catalyst7 shared
Abstract Ventures6 shared
Neo6 shared
Andreessen Horowitz5 shared
Precursor Ventures5 shared
South Park Commons5 shared
Craft Ventures5 shared
Balaji Srinivasan5 shared
SaaStr Fund4 shared
GV4 shared
Lightspeed Venture Partners4 shared
WndrCo4 shared
Alt Capital4 shared
Long Journey Ventures4 shared
Susa Ventures4 shared
TrueSight Ventures4 shared
Buckley Ventures3 shared
Soma Capital3 shared
Last updated: 7 October 2026