Robinhood has launched a new feature called "Custom Combos," enabling users to bet on multiple sports events simultaneously. This feature, akin to traditional "parlays," uses Kalshi's request-for-quote (RFQ) mechanism to determine odds. CEO Vlad Tenev highlighted the transformative potential of prediction markets on finance and news, noting that this segment is Robinhood's fastest-growing revenue line. Currently, sports prediction markets represent 91% of trading volume on the Kalshi platform.