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Nubank is a Brazilian financial technology firm that offers digital banking services in Brazil, Mexico, and Colombia. Founded in 2013, it is best known for its credit cards and online savings accounts. However, Nubank has expanded its offerings to cover consumer loans, insurance, investments, and cryptocurrency through its mobile app. Thanks to its success in disrupting Brazil's concentrated and fee-heavy banking sector, the company now serves over 100 million customers across its three core markets. Brazil provides more than 90% of its revenue.