source:[1] Robinhood's Foray into Futures and Derivatives (https://www.markets.com/news/robinhood-expand ...)[2] Robinhood, Susquehanna to launch own prediction market ... (https://next.io/news/betting/robinhood-susque ...)[3] Robinhood, Susquehanna take over exchange LedgerX in ... (https://www.reuters.com/sustainability/boards ...)