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Washington State Sues Kalshi Over Prediction Markets After Nevada Action

Washington State Sues Kalshi Over Prediction Markets After Nevada Action

Washington has sued Kalshi over event contracts, adding to broader allegations that the platform offers unlicensed gambling products across local markets despite its federally regulated status claim.

Fact Check
The claim is directly supported by an official announcement from the Washington Attorney General's Office and corroborated by multiple reputable news outlets. The lawsuit was filed on March 27, 2026, alleging that Kalshi's event contracts are illegal gambling products under Washington law. The context regarding Nevada and Arizona actions is also verified by news reports.
Summary

Washington Attorney General Nick Brown filed a civil lawsuit against Kalshi in King County Superior Court, alleging the company’s event contracts tied to sports, elections and wars violate Washington state gambling and consumer protection laws. The suit seeks to stop Kalshi from offering those products in the state, recover losses incurred by Washington residents and impose civil penalties. The new report adds that Washington’s case broadens claims that Kalshi’s platform offers unlicensed gambling across local markets nationwide. Kalshi has said it operates as a federally regulated platform and expects to prevail.

Terms & Concepts
  • Prediction markets: Markets where users trade contracts based on the outcomes of future events, such as elections or sports results.
  • Event contracts: Tradable contracts that pay out based on whether a specific event occurs, commonly used on prediction market platforms.
  • Kalshi: A U.S. event trading platform that offers regulated contracts tied to real-world outcomes.