Kalshi Reaches $4B Run Rate

Kalshi’s jump to a $4B run rate shows that prediction markets have turned from an election novelty into a high frequency sports trading business. The step up from roughly $25M in December 2024, to $735M in December 2025, to $4B in July 2026 came as sports became about 80% of volume, parlays became a major revenue engine during the World Cup, and Kalshi kept a roughly 1.2% blended take rate that is much higher than crypto native rivals.1 2 3 4

• Kalshi makes money like an exchange, not a sportsbook. Retail traders pay small fees on each contract, while market makers can trade for free and earn rebates for posting liquidity. That structure lets Kalshi monetize every extra burst of trading volume from finals, tournaments, and same day sports outcomes.3 4
• The mix shift matters as much as the user growth. Politics drove the first breakout in 2024, but sports then became the core habit loop because contracts resolve fast and users can recycle winnings into the next game. During the World Cup, parlays rose from about 2% of volume before the tournament to about 50% of volume.2 3
• Kalshi is also pulling ahead because it monetizes volume better than Polymarket. In mid 2026, Polymarket was at $375M annualized revenue in May and $1B in June on a lower effective take rate of about 0.3% to 0.67%, versus Kalshi near 1.2%, making each dollar of Kalshi volume worth more revenue.2 4

The next phase is a fight over distribution and product breadth. As Robinhood, DraftKings, and Polymarket build or buy their own market infrastructure, Kalshi will need to keep sports liquidity deep, turn zero fee products like crypto perps into paid products, and defend its position as the default regulated exchange for event trading in the U.S.2 4