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Massachusetts high court hears Kalshi appeal over sports contracts

Regulation

The Massachusetts Supreme Judicial Court heard Kalshi’s appeal on 4 May against an injunction blocking its sports contracts in the state. Kalshi argues that federal regulators have exclusive authority over its business, while state officials say the contracts are sports wagering subject to state gaming laws; the injunction remains paused during the appeal.

The court’s decision could determine whether Kalshi can offer sports-event contracts in Massachusetts without a state gaming licence.

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Regulation

Kalshi cases await Supreme Court review decision over sports event contracts

The US Supreme Court has yet to decide whether to review prediction market litigation involving Kalshi. Legal observers warned that declining review could leave conflicting appeals court decisions unresolved and operators facing separate state disputes over the regulatory status of sports event contracts.

A report dated 12 October 2026 notes that the justices have so far given no indication of whether they will take up the Kalshi prediction market disputes. In the view of legal observers quoted in that report, refusing the petitions would probably push operators into a state-by-state contest over sports event contracts that varies from jurisdiction to jurisdiction.

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