Monaco gained 695% on a deal with Visa that never happened
Monaco, a form of digital currency, gained as much as 695% in value since May 17, when its issuing company tweeted that it would offer a Visa-branded payment card. However, Monaco didn't have a deal with Visa. Following this, Monaco CEO Kris Marszalek has said, "In retrospect, we probably wouldn't put the Visa name on there yet."