Arbitrage
Cross-market opportunities between prediction markets, financial markets and exchanges
Arbitrage is exploiting price differences between different markets for the same event. In the prediction market world, arbitrage opportunities exist in multiple dimensions.
Three Arbitrage Dimensions:
• PM ↔ PM: Polymarket, Kalshi, Robinhood and Gemini Titan sometimes list identical contracts — but at different prices. The fragmentation of the PM market across multiple regulated exchanges creates structural price differences.
• PM ↔ Financial Markets: A PM contract can be traded against Fed Funds futures, interest rate ETFs or bond options. When the implied probabilities diverge, a cross-market edge emerges.
• PM ↔ Betting Exchanges: Traditional betting exchanges (Betfair, Smarkets) and licensed bookmakers (Pinnacle) often price the same events differently than PM platforms. Pinnacle is considered the pricing oracle — deviations are tradeable signals.
The arbitrage dimension grows with the number of platforms. The more fragmented the market, the more structural price differences — and the more opportunities for systematic cross-market strategies.