NBA Commissioner Adam Silver says prediction markets like Kalshi and Polymarket will be treated as sports betting under league integrity rules.
NBA Commissioner Adam Silver says prediction markets like Kalshi and Polymarket will be treated as sports betting under league integrity rules.

NBA Commissioner Adam Silver has taken a cautious stance on prediction markets, stating the league treats platforms like Kalshi and Polymarket as gambling operations subject to the same integrity rules as traditional sportsbooks.
Speaking during All-Star Weekend, Silver positioned prediction markets within the NBA’s existing sports betting framework. “We currently are looking at prediction markets essentially in the same way that we’re looking at sports betting markets or sports betting companies,” he said.
Silver addressed questions about Milwaukee Bucks star Giannis Antetokounmpo’s investment in Kalshi, calling it “minuscule” and noting it falls within collectively bargained rules allowing players to hold less than 1% stakes in betting companies.
The commissioner’s cautious approach contrasts with other major sports leagues. The NHL has already partnered with both Polymarket and Kalshi, while MLS signed an exclusive deal with Polymarket. Major League Baseball has signaled conditional openness to commercial relationships. The NFL maintains stricter guardrails but has recently shown increased interest in fan engagement opportunities.
Silver emphasized the regulatory uncertainty surrounding prediction markets. “Whether prediction markets are allowed to go forward in the form they’re in now will, I think, be ultimately an issue for the courts and for Congress,” he stated.
The NBA’s conservative position comes amid heightened integrity concerns. Federal investigators have charged multiple individuals including players and coaches in betting scandals. The league banned former Raptor Jontay Porter for life in 2024.
Silver noted the massive scale of betting activity the NBA must monitor, with wagering permitted in 40 US states and over 80 jurisdictions globally.
The central regulatory debate involves whether prediction markets fall under federal commodities law overseen by the CFTC or state gambling regulations. Silver’s comments suggest the NBA favors treating these platforms as gambling entities requiring traditional integrity safeguards.