A Massachusetts court has ruled to ban Kalshi Sports Betting, with the ruling expected to take effect as early as this Friday.

PANews reported on January 21 that, according to DL News, a Massachusetts judge ruled to prohibit prediction market platform Kalshi from offering sports betting services in the state. The ruling could take effect as early as this Friday, potentially becoming the first such ban in the United States. The court held that Kalshi, despite warnings from the CFTC, actively expanded into states requiring betting licenses and must comply with local laws. The state attorney general called the ruling an important step in strengthening betting regulation. Kalshi had previously argued that it was regulated by the CFTC and the state had no right to interfere, a claim the court rejected. Since its launch in January 2025, Kalshi's sports betting business has accounted for 70% of its revenue.