DraftKings has acquired Railbird Technologies and its CFTC-designated exchange, Railbird Exchange, in a move that drags the US sportsbook wars onto a new board: federally regulated prediction markets. The company says it will launch DraftKings Predictions , a mobile app that lets customers trade event contracts on real-world outcomes in finance, culture and entertainment “in the coming months.” Financial terms were not disclosed. Deal timing.  DraftKings announced the transa