Kalshi US visits soar 1,500% as regulatory pressure mounts

Major prediction market platform Kalshi has seen its US web traffic explode over the past year, underscoring the platform’s rapid growth while regulators and courts scrutinize its expanding event-contract business.

Kalshi recorded 15.4 million visits from the United States in July, up about 1,520% from just under 1 million in August 2025, according to Similarweb traffic estimates reviewed by Cointelegraph on Friday.

US traffic accounted for nearly 80% of Kalshi’s traffic in July, up from 72.8% in August 2025, showing that its growth has remained heavily concentrated in the country.

The surge comes as Kalshi faces mounting legal challenges over whether its sports contracts fall under federal oversight or state gambling laws, with New Jersey taking the dispute to the US Supreme Court.

Trading volume outpaces traffic growth

Kalshi’s surge in web traffic has come alongside even faster growth in trading activity, as prediction markets have expanded rapidly over the past year.

Kalshi recorded about $40 billion in monthly notional trading volume in August, up from $874 million a year earlier, an increase of roughly 4,500%, according to a Dune Analytics prediction market data dashboard.

Source: Dune Analytics