AMT
American Tower
Summary
What they do:
Own and operate ~150,000 telecommunications tower sites globally and 30 data centers (via CoreSite, acquired 2021 for $10.1B) — leasing antenna space to wireless carriers and colocation/interconnection capacity to cloud and enterprise customers.
Why they matter:
Tower sites are irreplaceable physical infrastructure protected by zoning barriers and 10-20 year lease escalators. CoreSite adds direct exposure to AI-driven data center demand, but the AI connection is a secondary storyline — the core business is towers generating predictable, inflation-linked cash flows from T-Mobile (18% of revenue), AT&T (17%), and Verizon (14%).
Recent performance:
Q4 2025 revenue $2.74B, up 7.5% YoY. Full year 2025 revenue $10.6B. AFFO per share $2.63 in Q4, up 13% YoY. Data center revenue grew ~14% in 2025. India operations sold to Brookfield for $2.5B in September 2024, simplifying the portfolio. REIT — FFO/AFFO is the relevant earnings metric.
Our Verdict
Established tower REIT with growing data center optionality via CoreSite — durable recurring revenue and zoning moat but AI exposure is 10-15% of the portfolio, making this primarily a yield play with modest AI seasoning.
Structural trends
Structural
68
/ 100
Moat
7/10
Tower zoning barriers + CoreSite data centers
AI Exp.AI Exposure
Stub~12% AI
Play Type
EstablishedAI Growth
12-15%
Rel. Value
74
COMPELLINGPriceLIVE
$176.41
-1.53%
Live via Yahoo Finance · refreshes every 5 min
Market Cap
$82.3B
P/E Ratio
32.7
P/S Ratio
7.7x
52W High
$234.33
52W Low
$165.08
52W Chg
6.9%
Beta
0.93
American Tower is one of the largest real estate investment trusts in the world, but what it owns looks nothing like office buildings or shopping malls. Its primary assets are telecommunications towers — steel lattice and monopole structures, typically 100-300 feet tall, scattered across highways, suburbs, and cities. Each tower hosts antennas from multiple wireless carriers. T-Mobile rents space near the top, AT&T rents space below it, Verizon below that. Each carrier pays American Tower a monthly lease, typically escalating 3% annually, under contracts running 10-20 years. The tower itself costs relatively little to maintain; the economics improve with each additional tenant because the fixed cost of the tower is already paid.
This co-location model — one tower, multiple tenants — is the core of the business and the source of the moat. Building a new tower requires zoning approval, environmental review, and community consent — a process that can take years and frequently fails. Existing towers are, practically speaking, irreplaceable.
American Tower operates ~150,000 tower sites across the US, Brazil, Europe, and Africa. The company exited India in September 2024, selling its ~76,000 Indian towers to Brookfield for $2.5B — taking a $1.2B loss but eliminating a market with persistent regulatory and counterparty risk. The proceeds went to debt reduction.
The second business is data centers. In 2021, American Tower acquired CoreSite Realty for $10.1B, gaining 28 (now 30) data centers across 12 US markets — primarily retail colocation and interconnection facilities in Denver, Los Angeles, Northern Virginia, and other key metros. CoreSite is a legitimate data center operator with mid-teens stabilized yields on new deployments and interconnection-rich facilities that attract cloud, enterprise, and increasingly AI workloads. Data center revenue grew approximately 14% in 2025 and is guided for ~13% growth in 2026, with $695M in development capex planned for new capacity.
The company also has an emerging edge data center initiative, identifying 1,000+ tower sites with potential to support multi-megawatt edge data center infrastructure. Several sites are being designated as "Construction Ready" in H1 2026. This is early-stage — interesting optionality, not yet revenue.
Full year 2025 revenue was $10.6B. The tower business provides the vast majority of revenue and cash flow. CoreSite's data centers contribute roughly $1.1B in revenue (~10% of total) and represent the AI-adjacent growth vector. As a REIT, American Tower distributes 90%+ of taxable income as dividends, currently yielding approximately 4%.
Human scale reference
American Tower's US tower portfolio covers virtually every major population center in the country. When you make a phone call, there is roughly a one-in-three chance the signal passes through an American Tower structure. A single tower generates $50,000-$100,000+ per year in lease revenue and costs a few thousand dollars per year to maintain — the operating leverage of additional tenants on existing towers is among the highest in all of real estate.
Supply Chain Dependencies
The Catch
American Tower's AI story is real but small. CoreSite data centers contribute approximately 10% of total revenue. Even at 14% growth annually, data centers would need 5+ years to reach 20% of revenue — and that assumes tower growth remains low. The edge data center initiative is compelling conceptually (1,000+ tower sites with multi-megawatt potential) but is pre-revenue and unproven. Meanwhile, the tower business — 85%+ of revenue — grows at low single digits, limited by carrier consolidation (fewer tenants), mature 5G deployments, and potential satellite-based alternatives (though this remains a long-tail risk). The company carries $37.2B in total debt against $7.1B in EBITDA (4.9x leverage), which is manageable but leaves limited room for aggressive data center investment without further asset sales or equity issuance. Interest rate sensitivity is real — the stock is down 24% from its 52-week high in an elevated-rate environment. Investors buying AMT for AI exposure are getting a tower company with data center seasoning, not a data center company with tower ballast.
If They Win
If CoreSite compounds at 15-20% growth for three to five years, if the edge data center initiative converts even 100 of 1,000+ identified tower sites into operational compute facilities, and if interest rates ease to support REIT valuations, American Tower becomes the only company in the world that owns both the backbone of the wireless network and a growing portfolio of AI-adjacent data centers. Data centers grow to 20-25% of revenue. Edge compute creates an entirely new asset class — distributed, low-latency inference facilities co-located with existing tower infrastructure, powered by existing utility relationships, and connected by existing fiber. AFFO per share compounds at 5-8% annually instead of 1-2%. The stock re-rates from tower multiples (16-18x AFFO) toward data center multiples (25-30x AFFO) on the growing segment, and the blended multiple expands meaningfully. The 4% dividend yield and the AI growth optionality create a rare combination of income and appreciation. But this is a 3-5 year story, not a 2026 story.
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Not financial advice. All scores generated via AI algorithms using public data.