A Washington State judge ordered Kalshi to cease most operations in the state, including sports and election prediction contracts, finding they likely constitut

The City of Baltimore filed lawsuits against Kalshi and Polymarket alleging they operate unlicensed illegal sportsbooks and mislead consumers, roping in payment

The CFTC used emergency powers to order Kalshi to keep operating in New York despite a state lawsuit, creating a federal-vs-state conflict over prediction marke

Kalshi is in final talks with Sequoia and Wellington to raise $750 million at a $40 billion valuation as annualized revenue hits $4 billion.

The New York City Council launched a sweeping investigation into Kalshi and Polymarket over allegations of predatory marketing and misleading claims to consumer

Kalshi became the first prediction market to offer fiber-optic multicast order book data feeds for institutional traders via DoubleZero Edge and Solana.

FlightAware dropped its lawsuit against Kalshi over prediction markets tied to flight cancellations, removing one legal threat to Kalshi's event contract lineup

A federal judge ruled that Connecticut has the authority to apply its sports betting regulations to Kalshi's operations within the state.

Nevada cited its support for Kalshi's prediction markets as a factor in its decision to leave the National Council on Problem Gambling.

Polymarket hired Bird founder Travis VanderZanden as its chief growth officer to lead expansion efforts in the prediction market space.

Underdog, a competitor in the prediction market space, hired a former Kalshi executive amid an industry-wide race for experienced talent.

Jeff Bandman returned to Kalshi to lead Kalshi Prime, the firm's institutional-focused prediction market division.

A surprise election result in Wisconsin challenged prediction market credibility, with Crowley emerging as a 78% favorite for Wisconsin Governor following the u

Kalshi's trading volume surpassed Polymarket's as World Cup-related betting cooled, shifting market share between the two largest prediction platforms.

Competing prediction market Novig launched a responsible trading framework including a minimum age of 21, as the industry faces increased regulatory scrutiny.

Apex and Kalshi partnered to open prediction market data to more institutional firms, broadening access to event contract pricing.