DraftKings has acquired prediction market company Railbird for an undisclosed amount ahead of launching its DraftKings Predictions mobile app. The deal had been rumored for months. The news arrives as total weekly prediction market volume soared above $2 billion for the first time last week as interest in the platforms surges. An often cited Certuity report estimates that prediction markets could reach$95.5 billion by 2035, with a compound annual growth rate of 46.8%. Railbird has held a designated cont ...