Kalshi's U.S. traffic surged by 1520% in a year, with monthly trading volume reaching 40 billion USD

According to Cointelegraph, the U.S. website traffic for the prediction market platform Kalshi has increased by over 1500% in the past year. Data from Similarweb shows that in July, traffic from the U.S. reached 15.4 million visits, a growth of about 1520% compared to less than 1 million visits in August 2025, with U.S. traffic accounting for nearly 80% of its total traffic. Meanwhile, Kalshi's nominal monthly trading volume in August reached approximately $40 billion, a growth of about 4500% compared to $874 million a year ago.

The nominal monthly trading volume for the entire prediction market industry increased from about $2 billion to $50.7 billion during the same period, with Kalshi accounting for nearly 79%. According to Barron's, sports contracts accounted for 83% of Kalshi's trading volume in July. Kalshi is currently facing increasing legal challenges, with New Jersey having submitted the dispute to the U.S. Supreme Court, and Michigan authorities continuing to seek to block its operations.

In terms of restricted jurisdictions, Canada brought about 450,000 visits to the Kalshi website in July, a significant increase from about 50,000 in August 2025; traffic from the UK also rose from 31,000 to 296,000. Although both countries are regions where Kalshi's membership agreement prohibits direct access or trading, Kalshi partnered with Canadian financial services company Wealthsimple in June to provide access to nearly 4,000 eligible contracts through a standalone application.