River Markets launch: what they're building and where to launch next
What they're building
Prime brokerage for prediction markets
Batch
Y Combinator Spring 2026
Industry
Fintech
Team size
2
Based
San Francisco, CA, USA
Founders
- Oscar Levy · Founder/CEO
- Antonin Parrot · Founder/CTO
Where else to launch River Markets
- Indie Hackers Forum ↗Audience: IndieHackers; bootstrapped solo founders sharing revenue and behind-the-scenes
- Hacker News (Show HN) ↗Audience: Hacker News readers; engineers, technical founders, infra-curious people
- Product Hunt ↗
- Demand Curve ↗Audience: Slack community; tight-knit, pseudo-private peer group
- No Code Founders ↗Audience: Slack community; tight-knit, pseudo-private peer group
- OnlineGeniuses ↗Audience: Slack community; tight-knit, pseudo-private peer group
- Product Makers ↗Audience: Slack community; tight-knit, pseudo-private peer group
- ProductLed ↗Audience: Slack community; tight-knit, pseudo-private peer group
Is this your startup? Get your launch kit
Build the River Markets launch kit →Opens the builder with rivermarkets.com already filled in, and it starts straight away. No account needed to see the kit.