Nu Holdings (NU 2.59%) stock performed exceptionally well last year. After some post-initial public offering (IPO) struggles, share prices for the Brazil-based digital banking platform zoomed from $3.50 to nearly $9 in 2023. With an innovative business model focused on rapid-growth geographies, this is one growth stock no investor should ignore.Banking on crypto and moreAt first glance, Nu is a bank stock, but the truth is far more exciting than that.Well-known venture capital firm Sequoia Capital has backe ...