# River Markets

[River Markets on Hacklab](https://hacklab.so/org/river-markets)

Startup · 2 people on Hacklab

## Links

- [Website](https://www.rivermarkets.com/)
- [Y Combinator](https://www.ycombinator.com/companies/river-markets)
- [LinkedIn](https://www.linkedin.com/company/rivermarkets)
- [X](https://x.com/river_markets)

## About

<!-- hacklab:yc-profile -->

## YC company profile

Prime brokerage for prediction markets

River Markets is the prime brokerage for prediction markets. We aggregate every major event-contract venue into one account, giving professional traders best execution, portfolio and order management systems, and a unified API.

- **YC batch:** Spring 2026
- **Founded:** 2026
- **Team size:** 2
- **Location:** San Francisco
- **Country:** US
- **Status:** Active
- **Industry:** Fintech
- **Stage:** Early
- **YC partner:** Harj Taggar

## Founders

### Oscar Levy — Founder/CEO

Co-Founder at River Markets. Previously quant at BlackRock managing models trading $6B, Sandbar Asset Management ($2B AUM hedge fund). MA Financial Engineering from UC Berkeley.

[LinkedIn](https://www.linkedin.com/in/oscar-levy/)

### Antonin Parrot — Founder/CTO

Co-founder of River Markets, the prime broker for prediction markets. I have a background in engineering and CS, and I've been working as a quant at a high frequency option market making trading shop.

[LinkedIn](https://www.linkedin.com/in/antonin-parrot-a16625196) · [X](https://x.com/antonin_parrot)

[Source: Y Combinator](https://www.ycombinator.com/companies/river-markets) · Retrieved 2026-11-02. Company information is self-reported on YC.

## Current staff

- [Antonin Parrot](https://hacklab.so/antonin-parrot) — Founder/CTO (Present)
- [Oscar Levy](https://hacklab.so/oscar-levy) — Founder/CEO (Present)