Kalshi experienced a dramatic increase in US web traffic, reaching 15.4 million visits in July, a rise of over 1,500% from August 2025. This growth coincides with intensified legal scrutiny of its sports contracts.
Kalshi's US web traffic climbed to 15.4 million visits in July, marking an increase of approximately 1,520% from just under 1 million in August 2025, according to Similarweb estimates. US traffic constituted nearly 80% of Kalshi's total visits in July, up from 72.8% in August 2025. The platform's trading volume has also seen significant growth amid ongoing regulatory scrutiny of its event-contract business.