The rapid rise of bitcoin has created a flood of cryptocurrency millionaires, and U.S. investors are grabbing the biggest share of the wealth from it, according to Bloomberg. According to estimates from blockchain analytics firm Chainalysis, U.S. traders made $4.1 billion in profits from bitcoin trading last year, more than three times the amount of the second-ranked country. researchers at Chainalysis said, “Near the end of the year, investors in almost all countries saw the biggest gains. ” China came in second with $1.1 billion in profits, followed by Japan, the United Kingdom, Russia and Germany. Emerging market countries such as Vietnam, Turkey and the Czech Republic also ranked among the top 25.