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Developer tools

River 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.

sources
1
Evidence entries preserved.
affiliations
1
Y Combinator
competitors
6
Mapped from High Signal graph features.
status
generated
D1 lookup
last updated
2026-07-15
16:41 UTC
source evidence
Why this company exists here

Y Combinator

yc-company-directory #473

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.

source
generated read
High Signal interpretation

River Markets is classified as Developer tools from source descriptions and fund-directory context. Similar companies below are ranked from offline product facets and meaningful description overlap; category and source affiliation can only strengthen an existing product match. For lookup-created rows, the profile starts as pending enrichment until deeper source collection runs.

offline extraction
Product facets
prediction marketsportfolio and order management systemsunified APIbest execution
mapping method
Similarity graph

Local clusters rerank extracted product concepts and description terms. The generated graph remains the fallback for sparse descriptions: offline reciprocal product-similarity graph: extracted concepts + description terms + bounded category/affiliation boosts. Minimum fallback score: 0; max competitors: 6.

discovery cluster

Companies similar to River Markets

Developer tools · 6 peers

A deterministic local cluster built from offline product facets and meaningful description terms. Category and selected-institution affiliation provide bounded tie-breaks. Open any peer to continue exploring its cluster.

Valence

match 77

Valence is a unified trading platform for prediction markets. We provide infrastructure to aggregate and execute contracts across Kalshi, Polymarket, and other platforms, surface arbitrage and mispricing opportunities in real time, and give systematic traders the API and backtesting tools they need to build and execute data-driven strategies on anything.

shared extracted concepts: prediction markets; shared product terms: market, prediction, aggregate, contract; shared product theme: developer infrastructure; same category: Developer tools; shared affiliation: Y Combinator

Sequence Markets

match 69

Sequence Markets lets traders execute across crypto exchanges, prediction markets, and tokenized-asset venues from one system. We built proprietary low-latency infrastructure and routing software so users can package one market view into one trade with the speed, access, and transparency execution requires.

shared extracted concepts: prediction markets; shared product terms: market, prediction, venue, trader; shared product theme: developer infrastructure; same category: Developer tools; shared affiliation: Y Combinator

ValCtrl

match 53

ValCtrl is building the intelligent prediction market: users type any public, resolvable belief about the future, ValCtrl structures it, prices it, and lets them trade it. Today’s prediction markets only support pre-listed questions, leaving user beliefs fragmented across venues, contract wording, rules, and proxy markets. ValCtrl’s world model maps typed beliefs to relevant market signals, evaluates basis risk, prices the claim, and moves toward model-priced liquidity where ValCtrl can take the

shared extracted concept terms: prediction, market; shared product terms: market, prediction, contract, venue; shared affiliation: Y Combinator

Mochatrade

match 49

Mochatrade lets global traders trade perpetual futures on US stocks with up to 20x leverage. Access 50+ US stocks including TSLA, NVDA, AAPL. Mocha is fully self-custodial and no US brokerage account is needed. Traders on-ramp in local currencies and get professional-grade execution on the world's most liquid equities. Starting with India (140M+ demat account holders), and expanding across other markets.

shared product terms: trader, brokerage, account, professional; shared affiliation: Y Combinator

Weltio

match 43

Weltio gives users access to a fully fledged brokerage account in USD, through unique features such as local instant cash rails, a robo-advisor, and tailored portfolios for the LatAm user. Starting with MX we’re going after a market with a potential in AUM of >$60B and 40M accounts

shared extracted concept terms: market; shared product terms: market, brokerage, account, portfolio; shared affiliation: Y Combinator

Saner.ai

match 32

Saner.AI harnesses AI to revolutionize knowledge management by enabling professionals, especially entrepreneurs with ADHD, to streamline connect, search, organize, synthesize, apply, and share knowledge in one intuitive, unified system powered by a personalized AI assistant.

shared product terms: management, professional, unifi, system