Warren Buffett does not know when prices for Bitcoin and other cryptocurrencies will crash, but the billionaire investor said “with almost certainty” that things are going to take a turn for the worse. “In terms of cryptocurrencies, generally, I can say with almost certainty that they will come to a bad ending,” Buffett said during a Wednesday morning interview on CNBC’s “Squawk Box.” Buffett said he had no idea about how or when things would go bad for Bitcoin and other cryptocurrencies, however: “When it happens or how or anything else, I don’t know.” The value of Bitcoin, the most popular of the virtual currencies, has shot from $775 to over $19,000 over the past 12 months, possibly turning hundreds of early investors into billionaires along the way.