River Markets

rivermarkets.com

rivermarkets.com • Startup • New

Startup • New

Actively hiring

Overview

Salaries

Products

People

Growth

Offices

Financials

Funding and backers

Backers

Y Combinator, Haun Ventures

Momentum

0/100

no fresh signals

Last sign of life

this month

a posting or a news item

The story so fareach stage dated by its source: the company's releases, the press, registers, filings

Apr 2026 Went through Y Combinator

Tractionpublic signals, read monthly

Web presence

top 13%

of 133.2M domains by links, Common Crawl

Backed byfrom the funds' portfolios and accelerator catalogs

Y Combinator X26 accelerator

Haun Ventures fund

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Overview

River Markets is the prime brokerage for prediction markets. Access professional execution across Kalshi, Polymarket, and more from a single platform.