Nasdaq

The CFTC's greenlighting of bitcoin futures could open the floodgates for Wall Street, and digital-asset die-hards see a plot to take control.

Dizzying trading in bitcoin fed the bubble argument, but now that Nasdaq is the third Wall Street player to say it is designing a financial instrument around it, banks may be forced to reassess cryptocurrencies.

Digital currency jumps through $11,000 before falling below $9,500 in a volatile day of trading; bank faces growing regulatory scrutiny.