The digital bank is seeking to expand into new locations.Modern finance is changing, and small digital banks are squeezing into untapped white space. Will some of these neobanks end up breaking through the barriers separating them from the large established banks? Many of them are making strides in making a real change.Take Nu Holdings (NU 1.48%). It's just over a decade old, but it has already onboarded more than 60% of the adult population in Brazil to its platform. It's taking its momentum and bringing i ...