River Markets

River Markets is a prime broker for prediction markets, giving hedge funds and prop desks one execution stack across venues: a multi-book terminal, native execution algos (icebergs, pegs, TP/SL), smart routing that splits fills across Kalshi and Polymarket for about 2 cents average price improvement, and a unified OMS with subaccounts.

cryptoPrediction markets Trading tools and botsY Combinator

Latest funding

$8.5M Seed · August 11, 2026

Source: CoinGape

Funding history ↓

Website: rivermarkets.com.

X: @river_markets · 1,231 followers.

Categories: Prediction markets Trading tools and bots.

Sectors: prime broker for prediction markets.

Subcategory: prediction market prime broker.

Stage: Seed.

Based in: San Francisco, United States.

Last round: Aug 11, 2026 · 93 days ago.

Team: 2 people on the team page.

On Recent Funding since: Aug 9, 2026.

Signals

X account@river_markets · created Apr 3, 2026 (7 months old) · 1,231 followers

Website registeredJul 7, 2008 (18 years old)

Funding rounds

August 11, 2026
Seed · $8.5M
CCherry Ventures, CCoinbase Ventures, HHaun Ventures, HHumbition, KKima Ventures, QQube Research & Technologies, SStack Asset Management, TTENET, UUFO Holdings, YY Combinator
Source: CoinGape
April 3, 2026
X account created
July 7, 2008
Website created

Founders and team

AP
Antonin Parrot Founder
OL
Oscar Levy Founder

Investors

Companies like River Markets

SStand
VValenceSeries B+
SSynthesis
PParlayX$1.25M Pre Seed · Sep 2026
AAnboto$3M · Oct 2023
MMatchr

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/river-markets (get a free API key).