River Markets raises $8.5M
River Markets announced a Seed round of $8.5M on 13 August 2026. The company operates in FinTech and is based in United States. It was founded by Antonin Parrot, Co-Founder.
Founder
Antonin Parrot
Co-Founder, River Markets
Outreach angles
- -Co-founded River Markets with Oscar Levy, a former BlackRock quantitative analyst, to build prediction-market trading infrastructure.
- -Brought an engineering and computer science background from high-frequency options market-making before co-founding River Markets.
- -Closed an $8.5 million seed round led by Haun Ventures as a Y Combinator P26 company serving top trading desks on Kalshi and Polymarket.
Signals
SeedFinTechYC BackedEnterpriseB2B
Round details
Company: River Markets
Domain: rivermarkets.com
Amount: $8.5M
Stage: Seed
Industry: FinTech
Country: United States
Announced: 13 August 2026
Other FinTech raises
Recently funded in United States