American Tower Forecasts 2026 Slowdown Before 5G, AI and 6G Demand Surge

American Tower, the real estate investment trust that owns and operates wireless communications infrastructure, told investors this week that it expects a slowdown in growth during 2026 before a rebound fueled by 5G, artificial intelligence, and early 6G deployments. The company's outlook, shared during its latest earnings call, points to a near-term dip in demand for tower space as carriers digest recent buildouts, followed by a renewed push as new technologies require denser networks. The news matters because American Tower is a bellwether for telecom capital spending, and its projections offer a preview of when the next infrastructure upcycle will begin.

The anticipated 2026 trough stems from a combination of factors, according to company executives. Mobile network operators in the United States and abroad are still integrating equipment from the initial 5G rollout, and many are waiting for clearer returns on those investments before committing to major new leases. At the same time, the global economic environment has led some carriers to trim capital budgets, reducing near-term demand for additional tower space. American Tower's own guidance reflects these pressures, with analysts expecting modest revenue growth in 2025 before a flattening in 2026.

Beyond 2026, however, the company sees three catalysts that could reignite demand. First, the ongoing expansion of 5G networks—particularly in mid-band spectrum—will require more cell sites to deliver promised speeds and coverage. Second, AI applications, from autonomous vehicles to industrial automation, will generate massive volumes of data that must be transmitted wirelessly, increasing the need for edge computing and denser antenna arrays. Third, early 6G research and trials, expected to ramp up later this decade, will eventually necessitate new infrastructure, though commercial deployments are likely years away.

American Tower's portfolio spans roughly 220,000 communications sites globally, including towers in the U.S., India, Brazil, and other markets. The company has been diversifying into data centers and edge computing through acquisitions, positioning itself to capture demand from AI-driven workloads that require low-latency connectivity. Competitors like Crown Castle and SBA Communications face similar dynamics, but American Tower's scale and international footprint give it a broader view of carrier spending trends. Its forecast, therefore, serves as an early indicator for the entire tower industry.

Investors will watch several signals in the coming quarters to gauge whether the 2026 trough materializes as predicted. Key among them: carrier capital expenditure guidance, spectrum auction schedules, and the pace of AI adoption in enterprise settings. If 5G and AI demand accelerates faster than expected, the downturn could be shorter and shallower. Conversely, if macroeconomic headwinds persist or 6G timelines slip, the recovery could be delayed. American Tower's next earnings report, due in early 2025, will offer the first concrete data on whether its projections are holding.