American Tower Corporation
Combined average of Moat (AI Resilience), Growth, and Valuation scores.
Moat Score
American Tower's moat is physical-site scarcity plus switching costs: a global portfolio of communications sites where zoning, land control, and multi-tenant colocation make like-for-like replacement slow and expensive, wrapped in long-term carrier leases. CoreSite adds an interconnection layer still open for a deeper restamp.
AMT runs a Scarce Digital Real-Estate Toll that compounds through site control, lease duration, and colocation density:
- Site Scarcity and Zoning Friction: New macro sites face zoning, permitting, and community opposition that incumbents already cleared years ago. That scarcity is the primary barrier: carriers need coverage footprints, and relocating antennas is operationally disruptive. AMT's scale across U.S./Canada, LatAm, Africa & APAC, and Europe turns one-off local entitlements into a portfolio that competitors cannot assemble quickly.
- Long Leases and Switching Costs: Tenant relationships sit inside multi-year master lease agreements with contractual escalators. Moving equipment to another tower is costly in truck rolls, RF redesign, and network downtime — so churn is typically low outside discrete events (DISH being the current one). Q2 organic tenant billings were soft on a headline basis (~2%) but ~4% ex-DISH, with U.S./Canada ~5% ex-DISH — the lease machine under the churn print.
- Multi-Tenant Density Economics: Incremental colocations on an existing tower are high-incremental-margin. More tenants per site improve returns without a proportional land or steel cost — a mild supply-side network effect that favors the densest portfolios. Carrier densification (5G/capacity) and neutral-host demand reinforce that dynamic even when net organic billings are temporarily depressed by a single-tenant churn event.
- CoreSite Option (Open Question): CoreSite/data center property revenue is guiding ~15% growth and was called out as a raise driver in the Jul 28 outlook. Interconnection and cloud on-ramps can deepen switching costs beyond towers, but this first pass does not deep-dive utilization, book-to-bill, or AI/inference demand quality — flagged for a later restamp alongside international FX translation.
Ten Moats Verdict
AMT's moat is AI-resilient physical scarcity: zoning-constrained sites, lease embedding, and colocation density. Software does not relocate steel. CoreSite is additive but not yet credited as a fully underwritten second fortress on this thin first pass.
91.3 resilient · 65.0 vulnerable · 80/20 = 86.0 · + 2 strength · = 88
Carriers do not build habitual UI workflows on AMT software. The stickiness is physical lease and RF redesign cost, scored under transaction embedding and system of record — not a learned interface.
Master lease agreements, escalators, and colocation workflows are industry-standard, but AMT's scale playbooks for zoning, build-to-suit, and multi-tenant stacking are operational know-how that smaller landlords copy slowly. AI does not erase the need for local entitlement and landlord execution.
Tower leasing does not depend on exclusive access to a public dataset. Coverage maps and FCC filings are widely available; the moat is owned sites and leases, not gated public data.
Site acquisition and zoning talent matters at the margin but is not scarce enough to be a primary moat versus portfolio scale and entitlements already won.
Towers plus CoreSite interconnection is a real bundle for carriers and cloud customers who want adjacent digital infrastructure — early and still an open depth question on this thin pass, but directionally intact rather than na.
Decades of lease terms, site performance, amendment history, and local entitlement outcomes across a global portfolio are proprietary operating data that improve pricing, churn prediction, and capital allocation. Competitors can buy towers; they cannot instantly buy the history attached to AMT's stack.
Zoning, permitting, and land-use constraints make new macro sites slow to originate. Incumbent sites that already cleared local opposition are regulatory scarcity assets — the closest thing tower REITs have to a license moat.
Multi-tenant density improves site economics and can attract further colocations (supply-side density effect). It is real but weaker than classic two-sided software networks — scored intact, not strong.
Carrier equipment on an AMT site is embedded in live network topology. Relocating means capital, RF redesign, and service risk. Long-term MLAs with escalators embed the economic relationship further — DISH shows churn can happen, but it is the exception that proves how painful tenant exit is.
For coverage planning, the owned site grid is the physical system of record: where the antenna sits is where the sector covers. That is not a software SoR, but it is the authoritative real-world footprint counterpart — replacing it requires rebuilding the grid.
Combined average of Moat (AI Resilience), Growth, and Valuation scores.
Moat Score
American Tower's moat is physical-site scarcity plus switching costs: a global portfolio of communications sites where zoning, land control, and multi-tenant colocation make like-for-like replacement slow and expensive, wrapped in long-term carrier leases. CoreSite adds an interconnection layer still open for a deeper restamp.
Growth Score
Q2 2026 (reported Jul 28, 2026) printed total revenue $2.749B (+4.7%) and property revenue $2.688B (+6.3%). AFFO attributable to AMT common stockholders was $1.264B (+3.8%), or $2.71 per share (+4.2%). Management raised FY2026 AFFO guidance to $5.135–$5.215B / $11.00–$11.17 per share (~3% growth at the midpoint) and framed 2026 as a trough AFFO-growth year: normalized growth is higher ex-DISH and refinancing headwinds, with mid- to high-single-digit AFFO growth expected as those fade into 2027. Organic tenant billings ~2% headline / ~4% ex-DISH; U.S./Canada ~5% ex-DISH. CoreSite/data center property revenue growth guided ~15%. Net leverage ~4.9x, inside the 3–5x target. Philippines and Bangladesh exits closed in Q2.
Valuation Score
At $176.39 (Yahoo Sep 16, 2026 close), AMT screens about 26% above the $140 bear and about 20% below the $220 base. On the raised FY2026 AFFO midpoint (~$11.09/share) the stock is ~15.9× 2026 AFFO with a ~4% dividend yield (Q2 distribution $1.79, +5.3% YoY). That is inexpensive versus AMT's historical quality multiple if 2026 is truly the AFFO trough; it is only fair if organic growth stays stuck near the headline ~2%. Thin first pass — ladder is AFFO-multiple anchored, not a full NAV build.
The Scarce-Site Lease Moat
AMT runs a Scarce Digital Real-Estate Toll that compounds through site control, lease duration, and colocation density:
- Site Scarcity and Zoning Friction: New macro sites face zoning, permitting, and community opposition that incumbents already cleared years ago. That scarcity is the primary barrier: carriers need coverage footprints, and relocating antennas is operationally disruptive. AMT's scale across U.S./Canada, LatAm, Africa & APAC, and Europe turns one-off local entitlements into a portfolio that competitors cannot assemble quickly.
- Long Leases and Switching Costs: Tenant relationships sit inside multi-year master lease agreements with contractual escalators. Moving equipment to another tower is costly in truck rolls, RF redesign, and network downtime — so churn is typically low outside discrete events (DISH being the current one). Q2 organic tenant billings were soft on a headline basis (~2%) but ~4% ex-DISH, with U.S./Canada ~5% ex-DISH — the lease machine under the churn print.
- Multi-Tenant Density Economics: Incremental colocations on an existing tower are high-incremental-margin. More tenants per site improve returns without a proportional land or steel cost — a mild supply-side network effect that favors the densest portfolios. Carrier densification (5G/capacity) and neutral-host demand reinforce that dynamic even when net organic billings are temporarily depressed by a single-tenant churn event.
- CoreSite Option (Open Question): CoreSite/data center property revenue is guiding ~15% growth and was called out as a raise driver in the Jul 28 outlook. Interconnection and cloud on-ramps can deepen switching costs beyond towers, but this first pass does not deep-dive utilization, book-to-bill, or AI/inference demand quality — flagged for a later restamp alongside international FX translation.
Ten Moats Verdict
AMT's moat is AI-resilient physical scarcity: zoning-constrained sites, lease embedding, and colocation density. Software does not relocate steel. CoreSite is additive but not yet credited as a fully underwritten second fortress on this thin first pass.
91.3 resilient · 65.0 vulnerable · 80/20 = 86.0 · + 2 strength · = 88
Carriers do not build habitual UI workflows on AMT software. The stickiness is physical lease and RF redesign cost, scored under transaction embedding and system of record — not a learned interface.
Master lease agreements, escalators, and colocation workflows are industry-standard, but AMT's scale playbooks for zoning, build-to-suit, and multi-tenant stacking are operational know-how that smaller landlords copy slowly. AI does not erase the need for local entitlement and landlord execution.
Tower leasing does not depend on exclusive access to a public dataset. Coverage maps and FCC filings are widely available; the moat is owned sites and leases, not gated public data.
Site acquisition and zoning talent matters at the margin but is not scarce enough to be a primary moat versus portfolio scale and entitlements already won.
Towers plus CoreSite interconnection is a real bundle for carriers and cloud customers who want adjacent digital infrastructure — early and still an open depth question on this thin pass, but directionally intact rather than na.
Decades of lease terms, site performance, amendment history, and local entitlement outcomes across a global portfolio are proprietary operating data that improve pricing, churn prediction, and capital allocation. Competitors can buy towers; they cannot instantly buy the history attached to AMT's stack.
Zoning, permitting, and land-use constraints make new macro sites slow to originate. Incumbent sites that already cleared local opposition are regulatory scarcity assets — the closest thing tower REITs have to a license moat.
Multi-tenant density improves site economics and can attract further colocations (supply-side density effect). It is real but weaker than classic two-sided software networks — scored intact, not strong.
Carrier equipment on an AMT site is embedded in live network topology. Relocating means capital, RF redesign, and service risk. Long-term MLAs with escalators embed the economic relationship further — DISH shows churn can happen, but it is the exception that proves how painful tenant exit is.
For coverage planning, the owned site grid is the physical system of record: where the antenna sits is where the sector covers. That is not a software SoR, but it is the authoritative real-world footprint counterpart — replacing it requires rebuilding the grid.
Growth Analysis
Growth Drivers
Key Risk
If organic tenant billings ex-DISH fail to re-accelerate toward mid-single digits into 2027 — because carrier consolidation, further churn, or delayed densification offset escalators — the trough-year framing breaks and the 6–9% AFFO CAGR band has to be rewritten lower.
Score Derivation
68.8 base + 1.3 trajectory − 5 risk = 65
Base 68.8 (6–9% AFFO CAGR midpoint 7.5%) + 1.3 trajectory (CoreSite accelerating; organic tenant billings and international stable on an ex-DISH view) + 0 stable margins − 5 moderate risk (carrier consolidation / residual DISH / rates-FX) = 65
Thin First Pass — Open for Restamp
CoreSite / data-center durability (utilization, pricing, AI/cloud mix) not modeled in depth — ~15% property-revenue guide taken as stated
International FX translation and emerging-market rate/FX risk flagged, not quantified site-by-site
DISH churn treated as a known trough item; path of residual DISH and other carrier consolidation not re-underwritten beyond management's 2027 inflection language
Coverage only — not an IM25 hire; no book.json edit
Price Scenarios (12–24 Months)
Valuation Analysis
Base fair value $220 assumes the DISH/refi trough clears on schedule, AFFO grows mid-single digits into 2027, and the market restores a ~18–20× AFFO multiple on look-through earnings. Live tape $176.39 (Sep 16 close); ~$82B equity value on ~467M diluted shares from the outlook. Not a hire screen — coverage valuation only. $220.
Valuation Multiples
| Price / 2026E AFFO | ~15.9× |
| AFFO yield (2026E) | ~6.3% |
| Dividend yield | ~4.1% |
| Net leverage | ~4.9× |
| Price / Sales (NTM, rough) | ~7.5× |
AMT is being priced closer to a trough-growth REIT than to a scarce-site compounder. If management's 2027 mid/high-single-digit AFFO path prints, ~16× 2026 AFFO leaves upside toward the $220 base. If ex-DISH organic stays muted and CoreSite decelerates, the multiple can compress toward the $140 bear without needing a balance-sheet accident. International FX and CoreSite depth remain the two largest unmodeled swings on this thin pass.
Approximate figures as of September 17, 2026.
Where We Are vs Targets
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DISH overhang lasts longer than guided, ex-DISH organic stays ~2–3%, CoreSite decelerates, and the AFFO multiple compresses toward ~12–13× on a flat 2027.
- Organic tenant billings ex-DISH remain sub-3% through 2027 as carrier consolidation and densification delays offset contractual escalators
- CoreSite growth fades from the ~15% guide toward high-single digits without a clear AI/cloud interconnection ramp
- Rates stay restrictive; refinancing costs keep AFFO growth near the 2026 trough print into 2027
- Multiple compresses to ~12.5× on ~$11 AFFO → ~$140; dividend still covered but the compounder narrative de-rates
2026 is the trough: DISH and refinancing headwinds fade, AFFO returns to mid-single-digit growth in 2027, and the market pays ~18–20× look-through AFFO.
- FY2026 AFFO lands inside $11.00–$11.17; 2027 AFFO/share grows mid-single digits as DISH comps ease
- U.S./Canada organic ex-DISH holds near ~5%; consolidated ex-DISH organic returns toward ~4%+
- CoreSite sustains low-double-digit to ~15% property revenue growth without a leverage break above 5×
- ~19× on ~$11.50–12 look-through AFFO supports ~$220; dividend continues mid-single-digit growth
CoreSite becomes a second growth engine, international FX stabilizes, and AFFO compounds high-single digits — multiple expands back toward prior-cycle scarcity pricing.
- CoreSite outperforms the ~15% guide on interconnection / cloud demand and earns a data-center scarcity premium inside the consolidated multiple
- Post-DISH organic billings surprise toward high-single digits on densification and new-tenant activity
- Leverage trends toward the midpoint of 3–5× while AFFO/share compounds ~8–10% for several years
- Market restores ~22–24× AFFO on growing earnings → ~$280