US regulator warns Kalshi and rivals that plus/minus odds could mislead traders, as legal fights over prediction markets and gambling law continue.
sports betting
A federal judge rejected Kalshi's bid to block Connecticut's gambling law, finding its sports contracts aren't federally regulated swaps.
A Gambling Insider analysis finds Kalshi "combo" bettors lose up to 35 cents per dollar staked, far worse than the blended figure widely reported.
Railbird Exchange, DraftKings' DKeX platform, has filed nine NFL and college football contracts with U.S. regulators ahead of kickoff.