Just been looking at some interesting plays in the fintech space lately, and there are two that keep showing up on my radar when I'm thinking about where to park capital right now.

First up is Robinhood. The stock trading app has been quietly building something pretty solid - they've got over 27 million funded customers and they're not slowing down. What caught my attention is that while they're adding new users (7% YoY growth), they're also making more money per user (16% YoY increase). That's the kind of combo you want to see. Revenue jumped 27% last year, with stock and options trading leading the charge. Yeah, crypto revenue dipped 38% because Bitcoin cooled off, but here's the thing - that same segment quadrupled in Q3, which tells me it's ready to explode again when BTC momentum returns. They just launched prediction markets too, and Q4 saw 8.5 billion event contract trades. The volume in January (3.4 billion contracts) suggests this could be a real growth driver moving forward. The stock's down over 30% year to date, which honestly looks like a decent entry point for what seems like a long-term winner.

Then there's Nu Holdings. This one's the largest online-only bank in Latin America, which means no physical branches, lower costs, and way better margins. They're serving over 60% of adults in Brazil and expanding into Mexico and Colombia. The numbers are pretty compelling - 39% revenue growth in Q3 2025, added 4 million new customers, and now sitting with over 127 million total. Their activity rate is at 83%, meaning most of these users are actually using the platform for credit, savings, and loans. Credit card and loan balances jumped 45% YoY, while their interest-earning portfolios surged 58%. Even better, net income grew 41% and they're running a 41% net profit margin. That's the kind of growth with profitability that doesn't come around often.

Both of these look like solid plays if you're looking for best stock opportunities right now in the fintech sector. The fundamentals are there - rising revenue, expanding margins, and real catalysts for growth. Definitely worth digging deeper if you're thinking about deploying some capital.