Rivo
Automatically moves idle cash into higher-yield accounts and back before bills are due
$2.7MSeed
Role not disclosed6V
645 Ventures
Activity from announced rounds
Activity in this selectionOct 23, 2026 · Fintech · Jul 26, 2026
645 Ventures is an investment firm whose partners include Aaron Holiday and Nnamdi Okike. Its AI infrastructure and developer-tools coverage identifies Gimlet Labs, while its own communications connect the firm to Ellis.
Recorded funding activity
The recorded activity includes Gimlet’s Series B for a compiler and cloud platform that distribute AI inference across processor types. Seed financings for Ellis, Fish Audio and General Analysis cover private-credit operations, voice generation and security for AI agents. These examples describe announcements covered by RoundOS rather than the firm’s complete portfolio.
- Rounds participated in
- 2
- Confirmed lead rounds
- — 2 roles undisclosed
- New companies
- 2 First participation on record · 0 follow-on
- Funding in participating rounds
- $12.7M 2 disclosed · full round size, not this investor’s share