3 Fintech "Infrastructure" Plays I'm Watching for December

The market feels loud right now. Everyone is screaming about the latest AI consumer app or the newest crypto token. But if you look under the hood, the real money isn't moving on the surface... it's moving through the pipes.

We are heading into a weird convergence this December. You have the usual holiday spending spike, but you also have a massive regulatory shift with the EU’s digital resilience laws kicking in. This is forcing a "flight to quality." B2B infrastructure is suddenly sexy again because big companies can't afford to run their payments on shaky startups anymore.

I went looking for the outliers... the companies that win regardless of the noise. I wanted businesses that actually make money when you and I swipe our cards.

If you're new to my analysis process, I use a specific framework to filter noise and avoid getting emotionally attached to tickers. Before I even look at a chart, I run every company through my 10x Stock Checklist: My Exact 47-Point Analysis Framework. It saves me from making expensive mistakes.

Here is what passed the screen.

Most people think of payments as a commodity. You swipe a card, someone takes a fee. Shift4 is different because they don't just process the payment; they own the entire software stack for hotels, stadiums, and restaurants.

I like them because they are effectively a "walled garden." Once a stadium installs Shift4 for their concessions and ticketing, they aren't ripping it out. It’s sticky. While their competitors are fighting for razor-thin margins in online e-commerce, Shift4 is consolidating the physical world.

The financials looked good—growing revenue at over 25%—but I had to be sure about the leadership. They've been acquiring companies aggressively, which can be a red flag. So I ran it through my 10x Stock Checklist: My Exact 47-Point Analysis Framework... and it passed the "Management Integrity" check with flying colors. They aren't just buying growth; they are buying leverage.

• Price: ~$66.00
• YoY Revenue Growth: +25.7% (Q3 '25)
• Cash Position: $1.5 Billion
• Catalyst: Upcoming presentation at the UBS Global Tech Conference on Dec 3.

Cross-border payments are a nightmare. Legacy players like Western Union are slow and expensive. Crypto is fast but complicated. Remitly found the middle ground: digital-first, mobile-centric, and actually reliable.

This is the risky play in the bunch. They are currently trading around $12.50, but they are achieving something rare in fintech right now: 25% growth combined with expanding margins. They are proving they can scale without burning cash indefinitely.

I don't trust the numbers blindly, though. This one is volatile. Before I even think about buying, I go to TradingView. I set my indicators to the Weekly view to see the bigger picture. Specifically, I look at the RSI... if it's below 30, I'm interested. If you aren't using their advanced charts yet, you should... it saves me hours of headaches.

I also use the TradingView Screener to filter for "Market Cap < 2B" and "Rel Vol > 2". It's the easiest way to spot momentum before the news does.

• Price: ~$12.50
• YoY Revenue Growth: +25.0%
• Gross Margin: ~60%+
• Catalyst: Investor Day on Dec 9 (their first since IPO).

This is a classic "Pick and Shovel" play. Marqeta doesn't take credit risk. They don't lend money. They just provide the API that lets companies like Uber, DoorDash, and Block issue cards.

If you believe transaction volume will go up in December (which it always does), Marqeta is the purest way to bet on it. They have 70% gross margins. That means almost every incremental dollar of volume during the holidays drops straight to the bottom line. The stock has been beaten down, trading near $4.75, which feels disconnected from the reality of their dominance.

• Price: ~$4.75
• Gross Margin: 70%
• YoY Revenue Growth: +28.0%
• Risk: Heavy concentration with Block (Cash App).

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I want to be clear... I could be wrong.

Shift4's aggressive M&A strategy works until it doesn't; integration issues could stall their operations. Remitly is constantly looking over its shoulder at stablecoins—if crypto payments actually become user-friendly, Remitly's fees look high. And Marqeta is terrifyingly dependent on Block. If Cash App decides to build their own issuer tech, Marqeta gets crushed.

I am looking to open a position in Marqeta (MQ) first. The valuation offers a margin of safety that I don't see elsewhere, and the holiday volume catalyst is immediate. I'm watching for an entry around $4.60.

Investing in small caps is a minefield. If you want to see exactly how I vet these companies to avoid zeroes, grab my 10x Stock Checklist: My Exact 47-Point Analysis Framework. It helps me stay objective when the hype gets loud.

Conclusion: The sector is rotating. The money is moving to infrastructure. I'm just following the flow.