3 Unexpected AI Stocks to Watch in 2024: From Digital Payments to Innovative Infrastructure

3 Unexpected AI Stocks to Watch in 2024: From Digital Payments to Innovative Infrastructure

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The best investments aren't always the most obvious ones. The artificial intelligence (AI) boom of 2023 drove share prices through the roof for some of the leading players in this red-hot sector. Meanwhile, a number of less conspicuous AI stocks were left behind for the benefit of astute AI investors.

On that note, these three Motley Fool contributors put their heads together to find some undervalued and nigh-on secret AI stocks for your pleasure and benefit. Read on to see why Atkore (NYSE: ATKR), Sirius XM Holdings (NASDAQ: SIRI), and Mastercard (NYSE: MA) are the best AI investments you didn't know you were missing.

The second-largest payments "railway" is predicting a great 2024

Nicholas Rossolillo (Mastercard): Mastercard, much like its larger peer Visa (NYSE: V), just kicked off 2024 in grand fashion. Its digital payments network acts as a global "railway" for money movement. Its data centers, private telecom networks, and cloud-based capabilities help connect banks and financial institutions, merchants, and people in one of the most basic of human communications: transacting business.

The volume of currency Mastercard moved on its network in the 2023 fourth quarter was up 10% year over year to $2.4 trillion, which led to a 9% increase in net revenue from its payments network. Add in another 19% increase from the company's ancillary services (like its cybersecurity and analytics solutions), and total revenue to close out 2023 rose 13% year over year to $6.5 billion.

And Mastercard developed its own generative AI chatbot for its security and fraud detection services, too. So if you're looking for an AI stock for 2024, it checks that box as well.

For the full year 2024, management thinks the global economy will remain in a slower but still healthy growth mode. As a result, the early prediction for full-year revenue is for a low- to mid-teens percentage growth rate over 2023.

The real beauty of buying and holding Mastercard stock for the long term, though, is its established railway for money movement, which is incredibly efficient. As with Visa, the addition of new payment volumes does little to increase Mastercard's operating expenses -- which has led to incredible profit-margin increases over time, and steadily increasing free cash flow.

MA Free Cash Flow Chart
Data by YCharts; TTM = trailing 12 months.

Mastercard stock doesn't come cheap, trading for 26 times one-year-forward expected earnings per share (EPS). But it's been a market-obliterating investment over the long term, and one I'm happy to keep holding indefinitely as its tollbooth-style business keeps raking in the cash from facilitating digital payments around the globe.