June 26 : Polymarket's annualized revenue has surpassed $1 billion, a source familiar with the matter told Reuters on Friday, highlighting the rapid rise of prediction markets as retail investors flock to trade on everything from elections and sports to financial events. Here are some details: • Prediction markets have evolved from a niche corner of crypto and academic finance into a fast-growing trading segment in less than two years, as a surge in trading volumes and user activity has fueled