TL;DR: The World Cup and newly launched crypto perpetual futures have pushed Kalshi past $1B/day in trading volume. But it now faces competition from Polymarket launching in the US and key partner Robinhood routing volume to its own exchange. Sacra estimates Kalshi hit $3B in annualized revenue in June 2026, up from $735M in 2025. For more, check out our full report and dataset on Kalshi...