Day One Ventures key facts
- Day One Ventures is a venture capital firm based in San Francisco, California with 59 tracked portfolio companies.
- Notable positions include OpenAI, Valar Atomics, World.
- PrivateMarketView records 4 deal participations by Day One Ventures.
- Day One Ventures’s most recent recorded investment was in Nov 2025, one of 1 in the last 12 months and 3 over two years.
- Day One Ventures has 5 funds on record, raising $84.5M across the 4 that report a size.
- The team roster lists 5 people.
Investment activity
Day One Ventures joined 3 recorded rounds in the last two years (1 in the last 12 months), up from 1 in the two years before. By year: 3 in 2025 and 1 in 2023. Day One Ventures is recorded as lead on 1 of them. Most recently: Valar Atomics (Series A, Nov 2025) and Valar Atomics (seed round, Feb 2025).
Day One Ventures portfolio at a glance
59 portfolio companies are on record for Day One Ventures, including OpenAI, Valar Atomics and World.
37 of the 59 carry a recorded valuation and 2 have recorded secondary-market trades, the names a secondary buyer or seller can price.
Day One Ventures funds
5 funds are on record for Day One Ventures, totalling $84.5 million across the 4 that report a size. The most recent is Day One Special Purpose Vehicle a Series of CGF2021 LLC (2026 vintage), $5.3 million.
Day One Ventures team
5 people are on record at Day One Ventures: 2 partners, 2 principals and 1 advisor. Senior names include Drake Rehfeld (Operating Partner), Masha Bucher (Founder) and Jenny Chao (Director of Communications). 5 of them have a verified direct contact on file.
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- ·The top 10 names in the book — of 59 recorded positions
- ·The 10 latest deals — of 4 rounds
- ·Watchlist + alerts for Day One Ventures's activity
Portfolio
59 companies · priced for members| Company | Industry | Valuation | First invested | Role |
|---|---|---|---|---|
| OpenAI | Software Development Applications | ▮ | ▮ | ▮ |
| Valar Atomics | — | ▮ | ▮ | ▮ |
| World | Financial Software | ▮ | ▮ | ▮ |
+ 56 more companies · all 59, priced and dated or a free account shows the top 10 names — no card Membership and data by Private Market View | ||||
Day One Ventures recent deals
4 recordedMembership and data by Private Market View
Funds
5 recorded- Levelized Capital I (Levelized Capital)—
- Day One Special Purpose Vehicle a Series of CGF2021 LLC2026$5.3M
- Day One Ventures Fund III, L.P.2024$7.4M
- Day One Ventures Fund II, L.P.2020$52.5M
- Day One Ventures Fund I, L.P.2018$19.2M
$84.5M raised across the 4 funds that report a size
Partners, principals, and the people who answer a pitch. Pro members reveal contacts with credits.
Frequently asked about Day One Ventures
- What companies does Day One Ventures invest in?
- Day One Ventures has 59 recorded portfolio companies, including OpenAI, Valar Atomics, World.
- Is Day One Ventures actively investing?
- Day One Ventures's most recent recorded investment was in Nov 2025, with 1 investments in the last 12 months.