$NU is the most underrated stock in the market. It can still make 10x:

1) Their revenue per active user is 1/4 of that of a traditional bank. They can easily double the revenue by up-selling and cross-selling.

2) They are approaching $100 million active quarterly users, but they are only active in Brazil, Mexico and Colombia. There is a lot of room for growth.

3) They are still mainly a credit card business. As their deposit base grows, their cost on credit will decline and net interest margin will expand.

4) Small and medium business segment is just taking off. This segment is generally a cash-cow for banks.

5) Other businesses such as marketplace and insurance are still small, they will also grow into significant revenue channels.

At 18 times earnings, the stock is basically a free money right now.