Key facts
- Kalshi's US web traffic increased by 1,520% to 15.4 million visits in July compared to August 2025.
- Trading volume on Kalshi surged by approximately 4,500% to $40 billion monthly in August.
- Sports contracts accounted for 83% of Kalshi's trading volume in July.
- The platform faces legal challenges, including a dispute taken to the US Supreme Court by New Jersey.
- Traffic from restricted jurisdictions like Canada and the UK has also increased.
Prediction market platform Kalshi has seen a dramatic increase in US web traffic, with visits soaring by 1,520% to 15.4 million in July compared to August 2025. This growth is heavily concentrated in the US, which accounted for nearly 80% of its traffic. Concurrently, Kalshi's monthly notional trading volume surged by approximately 4,500% to $40 billion in August, significantly outpacing traffic growth. Sports contracts formed the bulk of this volume, making up 83% in July. The platform's expansion occurs amidst intensifying legal and regulatory pressure, particularly concerning whether its sports contracts fall under federal oversight or state gambling laws. New Jersey has escalated this dispute to the US Supreme Court. Despite restrictions, Kalshi is also observing increased website traffic from Canada and the UK, where direct platform access is prohibited, though it has partnered with Wealthsimple in Canada to offer access to eligible contracts via a separate app.