NBA star Giannis Antetokounmpo has become a shareholder in the prediction market Kalshi, marking the first direct investment by an NBA player in the company. Kalshi, a federally regulated financial exchange, is not classified as a gambling platform. However, Antetokounmpo's investment, which allows him to profit from speculation related to his career, such as trade rumors, poses regulatory challenges for the NBA. This development comes just 100 days after a betting scandal involving NBA figures Chauncey Billups and Terry Rozier. Kalshi has previously partnered with the NHL and golfer Bryson DeChambeau.