
Sep 29, 2026 · 31 min
Prediction markets challenge the rules of gambling
Are Prediction Markets Gambling? A Lot Rides on the Answer.
Court decisions over Kalshi and Polymarket could determine whether states or federal regulators shape the next phase of betting culture.
- 1Prediction markets have moved into the mainstream while facing scrutiny over sports betting and insider trading.
- 2States call the platforms gambling operations, while companies argue they function as federally regulated financial exchanges.
- 3A federal appellate split and the CFTC’s aggressive intervention could push the dispute toward the Supreme Court.
Don't miss
David Yaffe-Bellany uses an ice cream shop hedging against rainy weather to test whether prediction markets genuinely serve financial hedging purposes.
The brief
Kalshi and Polymarket have made prediction markets mainstream, using sports-focused advertising and event contracts to attract users while scandals raise questions about how these platforms operate.
The central legal dispute is whether prediction markets are gambling platforms, as states argue, or financial exchanges, as the companies claim. The answer determines who regulates them.
David Yaffe-Bellany compares prediction markets with sportsbooks and stock markets, including an ice cream shop hedging against rainy weather, to test whether the financial framing fits actual use.
Conflicting federal appellate rulings have sharpened the fight between state and federal authority, while the CFTC’s lawsuits and intervention in Michigan give the agency an unusually aggressive role.
Donald Trump Jr.’s financial interests and advocacy for federal oversight add a political conflict to a regulatory battle that could decide how widespread prediction markets become.
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David Yaffe-Bellany
Kalshi
Polymarket