VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

American Tower Corporation vs Amazon.com, Inc.

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

American Tower Corporation

AMT · New York Stock Exchange

Market cap (USD)
SectorReal Estate
CountryUS
Data as of2025-12-31
Moat score
76/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into American Tower Corporation's moat claims, evidence, and risks.

View AMT analysis

Amazon.com, Inc.

AMZN · NASDAQ

Market cap (USD)$2.5T
SectorConsumer
CountryUS
Data as of2025-12-29
Moat score
87/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Amazon.com, Inc.'s moat claims, evidence, and risks.

View AMZN analysis

Comparison highlights

  • Moat score gap: Amazon.com, Inc. leads (87 / 100 vs 76 / 100 for American Tower Corporation).
  • Segment focus: American Tower Corporation has 3 segments; Amazon.com, Inc. has 4 segments (73.5% in Amazon Stores (Retail, Marketplace, Prime Subscriptions)).
  • Moat breadth: American Tower Corporation has 6 moat types across 4 domains; Amazon.com, Inc. has 10 across 4.

Primary market context

American Tower Corporation

U.S. & Canada Communications Sites

Market

Wireless communications site leasing (macro towers, rooftops and DAS)

Geography

United States and Canada

Customer

Wireless carriers and other tenants (broadcast, data, government/municipal)

Role

Independent owner/operator of communications real estate (towerco)

Amazon.com, Inc.

Amazon Stores (Retail, Marketplace, Prime Subscriptions)

Market

US retail ecommerce marketplace and online retail (integrated fulfillment + membership shipping)

Geography

United States

Customer

Consumers and third-party merchants

Role

Marketplace operator, retailer, and fulfillment provider

Revenue share

73.5%

Side-by-side metrics

American Tower Corporation
Amazon.com, Inc.
Ticker / Exchange
AMT - New York Stock Exchange
AMZN - NASDAQ
Market cap (USD)
n/a
$2.5T
Sector
Real Estate
Consumer
HQ country
US
US
Primary segment
U.S. & Canada Communications Sites
Amazon Stores (Retail, Marketplace, Prime Subscriptions)
Market structure
Oligopoly
Oligopoly
Market share
n/a
39%-42% (estimated)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
76 / 100
87 / 100
Moat domains
Demand, Legal, Supply, Network
Supply, Demand, Network, Financial
Last update
2025-12-31
2025-12-29

Moat coverage

Shared moat types

Long Term ContractsPhysical Network Density

American Tower Corporation strengths

Permits Rights Of WaySwitching Costs GeneralInteroperability HubCapacity Moat

Amazon.com, Inc. strengths

Capex Knowhow ScaleScope EconomiesTwo Sided NetworkSuite BundlingHabit DefaultNegative Working CapitalDistribution ControlData Network Effects

Segment mix

American Tower Corporation segments

Full profile >

U.S. & Canada Communications Sites

Oligopoly

n/a

International Communications Sites

Oligopoly

n/a

Data Centers

Competitive

n/a

Amazon.com, Inc. segments

Full profile >

Amazon Web Services (AWS)

Oligopoly

16.9%

Amazon Stores (Retail, Marketplace, Prime Subscriptions)

Oligopoly

73.5%

Advertising Services (Amazon Ads / Retail Media)

Oligopoly

8.8%

Other (healthcare, content licensing/distribution, shipping services, co-branded credit card agreements, etc.)

Competitive

0.9%

Want the full wide moat stocks list?

Browse the full ranking of wide moat stocks, updated with moat scores and segment context.

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.