Regulated Trading Dominates U.S. Prediction Markets as Kalshi Seizes 89% Share

The landscape of U.S. prediction markets is undergoing a rapid consolidation, with regulated platforms now capturing the vast majority of domestic trading volume. According to a recent Bank of America report, Kalshi currently controls approximately 89% of the measured U.S. market, far outpacing competitors such as Polymarket, which holds 7%, and Crypto.com at 4%. This shift underscores a growing preference for platforms with clear regulatory standing. While total weekly volume in the sector rose by 4%, the gains were unevenly distributed; Kalshi saw a 6% increase, while the crypto-native Polymarket experienced a 16% decline in volume. The divide centers on the legal classification of event contracts. Kalshi operates under the oversight of the Commodity Futures Trading Commission (CFTC), which frames these contracts as financial derivatives used for hedging risk. In contrast, Polymarket utilizes blockchain technology and has historically operated outside U.S. regulatory boundaries, attracting global liquidity but facing domestic restrictions. The industry's future hinges on a jurisdictional clash. The CFTC is currently suing multiple states, arguing that federal law preempts state-level gambling regulations. While states like Nevada and Massachusetts have secured preliminary injunctions against Kalshi, New Jersey recently lost an appeal regarding its ability to enforce gambling laws against the firm. This trend toward 'trading' over 'betting' is influencing broader financial services. Binance has integrated prediction features into its wallet, and Coinbase is exploring similar products. Simultaneously, traditional gaming firms like FanDuel are scaling back certain fantasy sports offerings as users migrate toward prediction-style financial instruments.