Nubank, which went public late last year, counts famed investor Warren Buffett among its roster of backers. Buffett’s firm Berkshire Hathaway took a $500 millio

Nubank, which went public late last year, counts famed investor Warren Buffett among its roster of backers. Buffett’s firm Berkshire Hathaway took a $500 million stake in Nubank in June 2021. The company is valued by the stock market at $20.4 billion, roughly half what it was worth in its December 2021 debut. The title is an exaggeration. Buffet owns less than 3% of the bank. He has no control on their initiatives...