Warren Buffett once famously called bitcoin “rat poison squared.” And despite the frenzy of media coverage this week about Berkshire Hathaway upping its stake in Nubank, a Brazilian digital bank, Buffett probably hasn’t changed his tune as much as people think.
With a market capitalization of more than $40 billion, Nubank is one of Latin America’s largest banks. It offers banking products like loans, credit cards and insurance, and it offers investing products, too. It does not, however, offer cryptocurrency trading, according to Coindesk.