Ask investors about ABM Industries (NYSE: ABM), and typically all you’ll get is a blank stare. The building maintenance specialist has practically zero brand name recognition, despite being around for more than a century. But I can almost guarantee you’re familiar with some of the names on the firm’s star-studded client roster.

The New York Transit System
Chicago’s O’Hare Airport
Oracle Park, home of the San Francisco Giants.

— and about 20,000 more.

Let’s make that 20,001. ABM just landed another large-scale customer, winning a five-year agreement (valued at $125 million) from Miami Dade International Airport.

As the second busiest international flight hub in the United States, Miami Dade welcomes about 160,000 passengers daily. For perspective, that’s enough to fill the Caesar’s Superdome in New Orleans (another big customer) twice.

As you might imagine, it takes an entire team to keep such a massive facility running smoothly. Among other maintenance services, ABM has been tasked with the installation of smart restroom monitoring systems. Not exactly the most glamorous job, but it’s undeniably important — and lucrative, judging by the nine-figure contract

You’ve heard of sexy stocks? Well, ABM is about as unsexy as they come. But shareholders don’t mind a bit, considering the rock-solid business has been raising dividends longer than blue-chip stalwarts like Walmart (NYSE: WMT) and McDonald’s (NYSE: MCD).

As an industrial conglomerate, ABM provides a wide array of building maintenance and engineering services, including custodial and janitorial work, mechanical and air conditioning repairs, electrical installations, parking management, and even landscaping.

We’ve already mentioned the sports stadiums and arenas (it does business with more than 100 of these venues nationwide). Other major clients include airports, hospitals, university campuses, and corporate data centers.

This steady business isn’t particularly sensitive to economic downturns. Regardless of interest rates or GDP, customers pay to keep their places clean and orderly. By the early 1990’s, it had already posted more than 80 consecutive years of revenue growth – without a single decline.

And dividends have followed.

ABM has now increased annual distributions for the past 58 years in a row. This impressive streak began in the early days of disco and bell bottoms.

As you may know, 25 straight years of uninterrupted dividend hikes is the threshold to be labeled a Dividend Aristocrat. This obscure contractor has met that rare goal twice over, making it eligible to be crowned as a “Dividend King.”

Among thousands of listed stocks, there are only about 30 members of this elite group.

As we speak, ABM is tapping into a deep pipeline of engineering and infrastructure projects. The company has signed $1.9 billion in new sales bookings and generated $8.7 billion in revenue over the past 12 months – both metrics reaching new record highs.

Citing robust demand and growing backlog, fiscal 2026 is expected to bring solid 15% earnings growth. The mid-range of the forecast at $4.00 per share would be enough to cover last year’s annual dividend nearly four times over. That comfortable margin is one reason why the board has just lifted the quarterly payout (again) by 9% to $0.29 per share – or $1.16 annually.

With contract wins (and free cash flows) piling up, it probably won’t be the last.