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Massachusetts AG Expands Kalshi Lawsuit Over Youth Sports Betting

Massachusetts' attorney general filed an amended suit against Kalshi, alleging the platform marketed sports event contracts to users under 21.

Massachusetts Attorney General Andrea Campbell escalated her legal battle against prediction market platform Kalshi on Tuesday, filing an amended lawsuit that accuses the company of targeting underage users with sports betting-related products. A judge granted the amendment, widening the scope of the original complaint.

The updated filing centers on allegations that Kalshi deliberately reached users younger than 21 through social media campaigns and marketing efforts conducted on university campuses — two channels with disproportionately young audiences. The accusations raise serious questions about Kalshi's compliance with state consumer protection and gambling regulations.

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Kalshi, which operates as a federally regulated prediction market platform, has positioned its sports event contracts as distinct from traditional sports betting, a legal argument that has drawn scrutiny from multiple state regulators. Massachusetts is among the states pushing back hardest on that classification, and the amended complaint signals that the AG's office is prepared to pursue a broader set of claims than initially filed.

The case highlights a growing tension between federal oversight of prediction markets and state-level gambling laws, with regulators increasingly focused on how these platforms market themselves to younger demographics. Whether Kalshi's products legally constitute gambling under Massachusetts law remains a central question the courts will need to resolve.

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Frequently Asked Questions

Q.What new allegations did Massachusetts add to its lawsuit against Kalshi?

The amended complaint alleges that Kalshi targeted users under 21 years old through social media and marketing campaigns on university campuses.

Q.Why did a judge allow Massachusetts to file an amended complaint against Kalshi?

A judge granted the amendment on Tuesday, permitting the attorney general's office to broaden the scope of its original lawsuit against the prediction market platform.

Q.What is Kalshi accused of in the Massachusetts lawsuit?

Kalshi is accused of marketing sports event contracts — which Massachusetts regulators treat as sports betting — to underage users through social media and college campus outreach.

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