Rhode Island Attorney General Files Suit Targeting Event Contracts on Kalshi and Polymarket

Rhode Island Attorney General Peter Neronha filed a lawsuit in Rhode Island Superior Court against prediction market platforms Kalshi and Polymarket, and the complaint centers on sports-related event contracts that state officials describe as unlawful sports betting under Rhode Island law. The filing claims these contracts violate state gambling statutes while diverting revenue away from the state's regulated sports betting framework, which operates through a single state-sponsored operator.

The action highlights ongoing friction between prediction market operators and state regulators across multiple jurisdictions, and it arrives amid broader efforts by states to maintain control over betting activities within their borders. Court documents outline how the platforms' offerings allow users to trade contracts tied to sports outcomes, which the attorney general's office argues falls squarely within the definition of sports wagering prohibited without proper licensing.

Details of the State Court Filing

The complaint filed in Rhode Island Superior Court asserts that Kalshi and Polymarket have facilitated transactions resembling sports bets on events such as game results and player performances, and it contends these activities bypass the state's requirement for a single authorized operator. Revenue from the official system supports state programs, according to regulatory filings, whereas funds directed to unlicensed platforms reduce those collections. The attorney general's office seeks injunctive relief to halt the offerings along with monetary penalties permitted under state statutes.

State law establishes clear boundaries for sports betting participation, and officials maintain that event contracts tied directly to athletic competitions do not qualify as exempt prediction products. The lawsuit references specific contract types traded on both platforms, noting that users can take positions on outcomes that mirror traditional wagers placed through licensed channels.

Kalshi's Preemptive Federal Court Action

Hours before the state filing became public, Kalshi initiated its own lawsuit in federal court, and that complaint argues the company's operations fall exclusively under federal regulatory oversight rather than state gambling rules. The platform maintains that its event contracts receive authorization through the Commodity Futures Trading Commission, which preempts conflicting state measures. Court papers emphasize the distinction between traditional betting and the financial instruments offered on the platform, while requesting declaratory judgment to affirm federal authority.

Polymarket faces similar allegations in the state action yet has not launched a parallel federal proceeding based on available records. The timing of the competing lawsuits underscores the rapid escalation in this dispute, and both sides have positioned their arguments around questions of regulatory jurisdiction that have surfaced in other states as well.

Broader Context of Regulatory Conflicts

This case forms part of continuing legal interactions between traditional sportsbooks, prediction market firms, and state regulators, and similar disputes have emerged in jurisdictions that maintain tightly controlled betting markets. Rhode Island's structure limits sports wagering to one designated operator, a model designed to consolidate oversight and direct proceeds toward public initiatives. Data from state gaming reports show consistent revenue streams under this arrangement, which officials seek to protect through enforcement actions.

Event contracts on prediction platforms have drawn scrutiny because they often reference sports results directly, and regulators in multiple states have issued warnings or filed actions asserting that such products require local licensing. Federal preemption claims advanced by operators rest on commodity classifications, yet state attorneys general maintain that core gambling prohibitions remain intact regardless of federal designations. Observers note that resolution of these cases could influence how other states approach comparable platforms in coming months.

Potential Implications for Market Participants

Should the state prevail in Superior Court, Kalshi and Polymarket would face restrictions on sports-related contracts accessible to Rhode Island residents, and enforcement mechanisms could extend to blocking transactions or requiring platform-level compliance measures. The federal case initiated by Kalshi seeks to establish a nationwide framework that would limit state-level interventions, creating a procedural path that could reach higher courts if the matters proceed concurrently.

Industry participants have monitored these developments because outcomes may affect how prediction markets structure offerings and how states allocate enforcement resources. Records from the Rhode Island Division of Gaming Enforcement indicate ongoing reviews of all betting-adjacent products to ensure alignment with statutory requirements, and this lawsuit represents one step in that process.

Conclusion

The dual filings in state and federal courts set the stage for extended litigation over the classification of event contracts and the boundaries of state versus federal authority in sports-related markets. Rhode Island officials continue to enforce the single-operator model while platforms assert federal protections, and further proceedings will determine how these positions interact in practice. Updates from both dockets will provide additional clarity as the cases advance through the judicial system.