According to Nasdaq CEO Adena Friedman, the company is open to becoming a cryptocurrency exchange; Friedman stated, “I believe that digital currencies will continue to persist it’s just a matter of how long it will take for that space to mature. Once you look at it and say, ‘do we want to provide a regulated market for this?’ Certainly Nasdaq would consider it.”; Friedman was less bullish on the future of ICOs. Source