Been watching Nu Holdings lately and caught something interesting early January. The stock hit a new high at $17.94, up over 5% in a single day. That kind of volume spike tells you something's catching investor attention in the fintech space.

What's wild is how much this Latin American digital banking play has moved since the IPO back in 2021. We're talking nearly 60% gains just from going public, and it's been climbing steadily through the year. The company's pushing into Mexico and Colombia, plus they're working toward getting that Brazilian banking license. With over 110 million customers already, they're clearly onto something.

The broader market was moving that day too - S&P 500 up 0.64%, Nasdaq climbing 0.69%. Other Brazilian banks like Itaú and Bradesco were also posting gains. Looks like investors are reassessing Latin American financial services potential as we head into the new year. Worth keeping an eye on how this regulatory situation plays out.