Cardi B's appearance at Bad Bunny's Super Bowl halftime show raised questions in prediction markets, leading to complaints about how contracts were handled. Kalshi and Polymarket faced disputes over whether her presence constituted a performance. A trader filed a complaint with the CFTC, alleging Kalshi violated regulations. The Super Bowl saw record trading volumes, with significant increases compared to previous years. Teljes cikk (Euronews.com)