Cameron Winklevoss

Identical twins Cameron and Tyler Winklevoss cofounded cryptocurrency exchange Gemini in 2014; today it processes about $70 million a day in trades. Cameron is Gemini's president; Tyler is CEO. The former Olympic rowers are best known for accusing Mark Zuckerberg of stealing their idea for a social network. They used some of their $65 million legal settlement with the Facebook CEO to start stockpiling Bitcoin. T he twins still own an estimated 70,000 Bitcoins, in addition to other digital assets.