In September, the total trading volume of Kalshi and Polymarket reached 1.44 billion dollars, setting a historical record.

Golden Finance reported that last week, the heat of the prediction market continued to rise, with Kalshi and Polymarket both announcing the completion of a new round of financing. Among them, Polymarket raised $2 billion from the Intercontinental Exchange (ICE), bringing the platform's valuation to $9 billion; Kalshi, on the other hand, raised $300 million at a valuation of $5 billion. These two rounds of financing have at least created a new billionaire. According to Bloomberg, Shayne Coplan of Polymarket became the youngest self-made billionaire after this financing. In September, Kalshi's market share of Polymarket peaked at 60%—a significant reversal from earlier this year when Polymarket dominated trading activity. During September, the trading volume of these two platforms reached a total of $1.44 billion, setting a historical record.