
Sports fans have long loved to bet on their favorite teams, but online sports betting has turned the casual wager into a click. Legal sports betting generated $10 billion during the first three quarters of 2025, but increasingly, prediction markets like Polymarket and Kalshi, more so than sports betting platforms themselves, have become the platform of choice for people looking to win big.
But now, sports betting platforms are under increasingly intense scrutiny after more than 30 people, including Miami Heat guard Terry Rozier, were arrested on charges of illegal sports betting and insider trading in October.