In an interview with CNBC in January 2018, Buffett said that the recent craze over Bitcoin and other cryptocurrencies won't end well, adding that "when it happens or how or anything else, I don't know." But he said he would not take a short position on bitcoin futures.In terms of cryptocurrencies, generally, I can say with almost certainty that they will come to a bad ending. These are the words of Warren buffet the third riches man on earth