NuBank is the largest neobank in the world, with over 90 million customers in Brazil, Mexico and Colombia. Built as an alternative bank without the extortionate fees Brazilian’s regularly faced, NuBank quickly drew a large community of unbanked customers. Co-founder David Vélez had worked as a partner at Sequoia Capital and co-founder Cristina Junqueira was previously employed by the largest bank in Brazil. In the first few years, NuBank struggled to meet the demand, with a waiting list of...