THE HOUSE ALWAYS WINS: NYSE-owner Intercontinental Exchange rises after it takes $2 billion stake in Polymarket. “The deal comes as prediction markets become more mainstream, with Polymarket rival Kalshi enjoying sharp trading volume increases thanks to the implementation of sports-related contracts. Prediction markets industry revenue may climb to $8 billion by 2030 as it takes market share from the sports gambling industry, according to analysis by Piper Sandler.”