Prediction market open interest surpasses $1.066B as Polymarket leads user activity
Open interest on major prediction markets has climbed to $1.066B, with $564M locked in trading pairs, marking the first time the sector exceeds the $1B threshold. Polymarket still leads by daily user activity and wallet inflows, while Kalshi and Opinion show strong but more concentrated volumes across sports and other categories. Recent growth has been driven by new wallets, diversified markets, and event-focused contracts around the Super Bowl, the winter Olympics, and politics.