The Winklevoss twins are smiling from ear to ear.Shares of Gemini Space Station (GEMI +31.95%) soared on Thursday after the cryptocurrency exchange received a license to launch prediction markets in the U.S. By the close of trading, Gemini's stock price was up more than 30%. Gemini plans to offer popular event-based contractsThe Commodity Futures Trading Commission (CFTC) granted the crypto platform's affiliate, Gemini Titan, a Designated Contract Market (DCM) license that will enable Gemini to offer tradi ...