Prediction markets like Kalshi and Polymarket are currently barred from offering betting contracts on the Kentucky Derby due to a legal standoff with the horse racing industry, specifically enforced by the 1978 Interstate Horseracing Act (IHA). This federal law grants track operators, such as Churchill Downs, intellectual property rights over their racing content and requires their consent for any wagering on events like the Derby. Unlike other sports where prediction markets have expanded under Commodity Futures Trading Commission (CFTC) oversight, horse racing operates under a distinct legal framework that prioritizes pari-mutuel wagering, protecting the industry’s revenue and regulatory control. Polymarket briefly launched Derby contracts but withdrew them after Churchill Downs’ intervention, highlighting the industry’s legal leverage.

The financial stakes are significant, with the Kentucky Derby generating over $234 million in wagers last year, making unauthorized prediction market contracts a direct commercial threat to the pari-mutuel system. The National Thoroughbred Racing Association (NTRA) has formally challenged the CFTC’s jurisdiction over horse racing event contracts, emphasizing that the IHA preempts such contracts without industry consent. While prediction markets have successfully challenged state gambling laws elsewhere, the unique federal protections for horse racing create a complex legal landscape. The future of horse racing contracts on prediction markets hinges on potential partnerships and consent agreements with racing operators, but for now, betting on the Derby remains exclusively within the traditional pari-mutuel system.