Prediction markets posted their strongest quarter on record in Q2 2026, even as broader crypto trading activity weakened. CoinGecko’s Q2 Crypto Industry Report placed notional prediction-market volume at $113.8 billion, up 48.7% quarter over quarter.
The contrast was clear across major trading venues. Spot volume across the top 10 centralized exchanges fell 27.9% to $1.95 trillion, while centralized perpetual futures volume declined 10% to $12.7 trillion. Stablecoin market capitalization also slipped 1.6% to $305.1 billion.
Event Markets Outperform a Weaker Crypto Quarter
June became the strongest month ever for prediction-market volume, reaching $50.7 billion in notional activity. CoinGecko said that was 91.9% above the average of the previous five months.
Sports contracts drove much of the late-quarter acceleration, with activity tied to events such as the UEFA Champions League Final, Stanley Cup, NBA Finals, FIFA World Cup and Wimbledon. The surge shows how prediction markets can respond to real-world event calendars rather than only crypto price cycles.
That makes the category a different kind of speculative rail. While spot and derivatives traders pulled back, event-based markets continued attracting liquidity around outcomes that sit outside traditional token narratives.
Kalshi Extends Lead as Polymarket Mix Shifts
CoinGecko’s data also showed a clear shift in platform leadership. Kalshi increased its market share from 42.4% in Q1 to 58.9% in Q2, while Polymarket’s share fell from 35.8% to 30.2%.
Polymarket’s activity became more concentrated in sports contracts, which accounted for 81% of its June volume compared with 40% in January. That mix suggests prediction-market growth is being shaped by high-frequency event categories as much as by politics, macro or crypto-native themes.
The growth also brings more regulatory pressure around classification and supervision. Prediction markets continue to sit in a contested zone between financial contracts, event derivatives and gambling-style products, especially in the U.S.
CoinGecko’s Q2 data shows prediction markets as one of crypto’s clearest outliers during a weaker trading quarter. The next useful indicators will be whether volume remains elevated outside major sports windows, whether market share keeps concentrating around Kalshi and Polymarket, and how regulators define the sector’s operating perimeter.