VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

American Tower Corporation vs Microsoft Corporation

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

Microsoft Corporation

MSFT · Nasdaq Global Select Market

Market cap (USD)$3.6T
SectorTechnology
CountryUS
Data as of2025-12-21
Moat score
84/ 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 Microsoft Corporation's moat claims, evidence, and risks.

View MSFT analysis

Comparison highlights

  • Moat score gap: Microsoft Corporation leads (84 / 100 vs 76 / 100 for American Tower Corporation).
  • Segment focus: American Tower Corporation has 3 segments; Microsoft Corporation has 3 segments (42.9% in Productivity and Business Processes).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: American Tower Corporation has 6 moat types across 4 domains; Microsoft Corporation has 9 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)

Microsoft Corporation

Productivity and Business Processes

Market

Enterprise productivity & collaboration suites, business applications, and professional network platforms

Geography

Global

Customer

Enterprises, SMBs, consumers, recruiters/advertisers

Role

SaaS platform + professional network

Revenue share

42.9%

Side-by-side metrics

American Tower Corporation
Microsoft Corporation
Ticker / Exchange
AMT - New York Stock Exchange
MSFT - Nasdaq Global Select Market
Market cap (USD)
n/a
$3.6T
Sector
Real Estate
Technology
HQ country
US
US
Primary segment
U.S. & Canada Communications Sites
Productivity and Business Processes
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
76 / 100
84 / 100
Moat domains
Demand, Legal, Supply, Network
Demand, Network, Supply, Legal
Last update
2025-12-31
2025-12-21

Moat coverage

Shared moat types

Long Term Contracts

American Tower Corporation strengths

Permits Rights Of WayPhysical Network DensitySwitching Costs GeneralInteroperability HubCapacity Moat

Microsoft Corporation strengths

Suite BundlingData Workflow LockinTwo Sided NetworkCapex Knowhow ScaleEcosystem ComplementsOperational ExcellenceDefault OS GatewayContent Rights Currency

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

Microsoft Corporation segments

Full profile >

Productivity and Business Processes

Oligopoly

42.9%

Intelligent Cloud

Oligopoly

37.7%

More Personal Computing

Quasi-Monopoly

19.4%

Want the full wide moat stocks list?

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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.