River Markets YC Application

Spring 2026Active

River Markets went through Y Combinator in the Spring 2026 batch as a Fintech company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Spring 2026
Industry: Fintech
Team size: 2
Status: Active
Launched: 2026

Founders

Oscar LevyCo-Founder
Antonin ParrotFounder

What River Markets does

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.

River Markets's YC application, reconstructed

Y Combinator application

River Markets, Spring 2026 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

River Markets

Describe what your company does in 50 characters or less.

Prime brokerage for prediction markets

What is your company going to make? Please describe your product and what it does or will do.

We built a platform that aggregates multiple prediction market venues into a single account. Our product gives professional traders consolidated portfolio views, unified order and risk management, and a single API to trade and monitor event-contracts across markets. The goal is to replace fragmented workflows with one system designed specifically for prediction market professionals.

Where do you live now, and where would the company be based after YC?

We live in San Francisco, CA, and plan to keep the company based here after YC.

Explain your decision regarding location.

San Francisco is where the fintech and trading communities are concentrated, so it's the right place to build relationships and hire talent who understand modern financial technology. We are already embedded here and see no reason to move.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real River Markets YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from River Markets's public data (launch notes, founder backgrounds, product description). It shows how a company like River Markets would present itself to YC, not the text they submitted.