Robinhood (NASDAQ:HOOD) says price volatility contracts tied to Bitcoin (CRYPTO: BTC), gold and oil now rank among its fastest-growing prediction market products, even as sports remains the platform's single largest category. Why Financial Contracts Are Catching Up to Sports Robinhood VP and GM for futures and prediction markets JB Mackenzie told the NEXTPredict conference in New York Thursday, as cited by CoinDesk, that Bitcoin, crude oil and gold contracts have started to dominate trading activity.