Understand any stock in simple English
Enter a ticker to learn what the company does and how it makes money.
SBA Communications Corporation
SBA Communications owns and leases space on wireless communication towers to mobile carriers and other wireless providers.
SBA Communications is a cell tower company. It owns tall steel structures — tens of thousands of them across the Americas, Africa, and parts of Asia — and rents out space on those towers to the companies that run mobile phone networks. When you make a call or stream a video on your phone, the signal almost certainly travels through a tower that SBA owns, even though your carrier's name is the one on your bill.
The business model is beautifully simple. A wireless carrier like Verizon, AT&T or T-Mobile needs cell towers everywhere, but building and maintaining them is expensive and tedious. So the carriers rent. They sign long-term contracts — typically five to ten years, with renewal options — and pay SBA a monthly fee for each antenna they hang on the tower. Multiple carriers can share the same tower, which means SBA collects rent from several customers for one structure. Adding a new tenant to an existing tower costs relatively little, so the profit from each additional tenant is high. This is a business built on patience and math. Towers are expensive to build, but once they're up, they generate steady, predictable cash for decades. The rents often rise automatically each year, and carriers rarely leave because moving an antenna means disrupting service. SBA is one of the three big independent tower companies globally, alongside American Tower and Crown Castle. Carriers sometimes build their own towers or sell towers to companies like SBA to raise cash — a trend that has handed SBA plenty of acquisition opportunities over the years.
One notable chapter: in 2024, SBA sold a big chunk of its towers in Brazil to American Tower and has been reshuffling its international footprint, while also expanding into fiber and data centers through acquisitions. The company also returns cash to shareholders through dividends and share buybacks. The main risk is straightforward: if carriers merge or spend less on their networks, demand for tower space can slow. But with mobile data use climbing every year, the towers keep earning their rent.
Saved answer · last researched 12 Nov 2026