Group 1 - Prediction markets are emerging as a significant competitor to online sportsbooks, impacting shares of DraftKings and FanDuel's parent company negatively [3] - Shares of DraftKings (NASDAQ:DKNG) and FanDuel's parent company have seen a sharp decline this week due to the rise of prediction markets [3] - Robinhood (NASDAQ:HOOD) and Kalshi have reported a surge in activity, indicating growing interest in prediction markets [3]