Underdog sues Connecticut to block state enforcement against event contracts
Underdog filed suit September 16, 2026 to block Connecticut from enforcing state gaming law against its prediction-market contracts. The company argues it operates as a federally regulated designated contract market. The suit arrives as Connecticut pursues separate enforcement actions against Kalshi and other platforms, testing whether CFTC registration insulates operators from state crackdowns. Underdog's complaint stakes the same preemption claim Kalshi is already litigating in the state.
Underdog's suit turns Connecticut into the first state fighting two CFTC-registered platforms on the same preemption question. A court ruling for either side becomes a template other states or venues copy immediately. Underdog wins, Kalshi and other registered platforms gain a second federal precedent; if Connecticut wins, the state's enforcement playbook spreads to attorneys general already investigating elsewhere.
Legal spend compounds across parallel cases while traders wait. Each new platform dragged into court deepens the patchwork: contracts legal in some states, banned in others, with no uniform rule until the Supreme Court acts on New Jersey's petition. The first ruling here sets the odds for every platform still standing. Those without Robinhood's resources to settle face the steepest cost.