“prediction markets are mostly empty shells, not truth machines”
Six-month empirical analysis of political prediction market quality across Kalshi and Polymarket. Finds only 1.3% of political markets are liquid enough to be manipulation-resistant, bid-ask spreads exceed 20% on most contracts, and only 53% of resolved US elections appeared on both platforms. Proposes a four-part blueprint: stock relevant questions, cross-subsidize political liquidity from sports profits, deploy AI market makers where human interest is insufficient, and standardize contract definitions across platforms.
Some technical background helpful
Platforms mentioned: Kalshi, Polymarket, PredictIt