Massachusetts attorney general sues Kalshi claiming illegal sports wagering operations

Monday, September 15, 2025 2:54 AM
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  • Hannah Gannagé-Stewart, COMPLETE iGAMING

Massachusetts Attorney General Andrea Joy Campbell has filed a lawsuit in Suffolk Superior Court against prediction market Kalshi for unlawfully promoting and accepting online sports wagers.

The lawsuit, which was filed on Friday, alleges that Kalshi offers sports wagering under the guise of event contracts, which allow bettors to place wagers through a ‘yes’ or ‘no’ option on the likelihood of an event occurring.

The lawsuit requests that the court order Kalshi to cease offering sports wagering in Massachusetts while it is pending.

Kalshi’s contracts, which are offered on sporting events, including moneyline contracts, point spread contracts, and over-under contracts, closely resemble sports wagering offered by licensed operators.