Kalshi and Polymarket trading volume surges 75% to $44.8 billion in June
Trading volume across prediction market platforms Kalshi and Polymarket surged 75% in June, reaching $44.8 billion, according to The Block. Polymarket US alone accounted for over $3 billion of that total, marking a new all-time monthly high that nearly doubled its May volume. The combined growth marks the fifth consecutive quarter of roughly doubling monthly volume since December 2025.
The trading surge pushed prediction markets' share of crypto spot-exchange activity to nearly 5%, up from 1% in 2022. The sector took just six months to reach the 5% threshold, compared to the four years it previously required to hit 1%. The spike coincides with the 2026 World Cup, the first hosted on U.S. soil in 32 years, which has driven massive engagement to the platforms. Monthly unique wallets participating in prediction markets now exceed 840,000.
From the sources (5 posts)
@theblockcoTHE BLOCK: Prediction markets Kalshi and Polymarket saw a 75% growth in combined monthly volume in June, processing nearly $45 billion worth of trades.
@coinmarketcapLATEST: 📊 Kalshi and Polymarket's combined monthly volume jumped 75% to $44.8B in June as World Cup betting fever swept prediction markets, per The Block.
@theblockcoTHE BLOCK: Polymarket US did over $3 BILLION worth of volume in June — a new all-time monthly high, nearly doubling the previous month First World Cup on American soil in 32 years and the first #USMNT knockout win since 2002 seems to have
@chainlinkPrediction market adoption is accelerating: • $40B+ in monthly volume (up from $1.2B in 2025) • 840K+ unique wallets participating every month To unlock the next phase of growth, the industry requires advanced & reliable infra. Enter
@theblockcoTHE BLOCK: It took prediction markets four years to reach 1% of crypto spot exchange volume. It then took just six months to reach almost 5%. Roughly a doubling per quarter since December 2025 — a very different regime than everything befor