VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

Stock Comparison

American Tower Corporation vs Guidewire Software, 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)$78.9B
Gross margin (TTM)74.6%
Operating margin (TTM)45.9%
Net margin (TTM)28.1%
SectorReal Estate
IndustryREIT - Specialty
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

Guidewire Software, Inc.

GWRE · New York Stock Exchange

Market cap (USD)$15.7B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorTechnology
Industry
CountryUS
Data as of2026-01-11
Moat score
63/ 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 Guidewire Software, Inc.'s moat claims, evidence, and risks.

View GWRE analysis

Comparison highlights

  • Moat score gap: American Tower Corporation leads (76 / 100 vs 63 / 100 for Guidewire Software, Inc.).
  • Segment focus: American Tower Corporation has 3 segments; Guidewire Software, Inc. has 2 segments (81.8% in Core P&C insurance platform software (InsuranceSuite, InsuranceNow, Guidewire Cloud Platform)).
  • Moat breadth: American Tower Corporation has 6 moat types across 4 domains; Guidewire Software, Inc. has 7 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)

Guidewire Software, Inc.

Core P&C insurance platform software (InsuranceSuite, InsuranceNow, Guidewire Cloud Platform)

Market

Property & casualty insurance core systems platforms (policy administration, claims, billing) with cloud delivery

Geography

Global

Customer

Property & casualty insurers (global carriers to regional/local providers)

Role

Vertical enterprise application vendor / cloud platform operator

Revenue share

81.8%

Side-by-side metrics

American Tower Corporation
Guidewire Software, Inc.
Ticker / Exchange
AMT - New York Stock Exchange
GWRE - New York Stock Exchange
Market cap (USD)
$78.9B
$15.7B
Gross margin (TTM)
74.6%
n/a
Operating margin (TTM)
45.9%
n/a
Net margin (TTM)
28.1%
n/a
Sector
Real Estate
Technology
Industry
REIT - Specialty
n/a
HQ country
US
US
Primary segment
U.S. & Canada Communications Sites
Core P&C insurance platform software (InsuranceSuite, InsuranceNow, Guidewire Cloud Platform)
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
76 / 100
63 / 100
Moat domains
Demand, Legal, Supply, Network
Demand, Network, Legal, Supply
Last update
2025-12-31
2026-01-11

Moat coverage

Shared moat types

Long Term ContractsSwitching Costs General

American Tower Corporation strengths

Permits Rights Of WayPhysical Network DensityInteroperability HubCapacity Moat

Guidewire Software, Inc. strengths

Ecosystem ComplementsSuite BundlingCompliance AdvantageCapex Knowhow ScaleDesign In Qualification

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

Guidewire Software, Inc. segments

Full profile >

Core P&C insurance platform software (InsuranceSuite, InsuranceNow, Guidewire Cloud Platform)

Oligopoly

81.8%

Professional services (implementation, cloud migration, integration)

Competitive

18.2%

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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Proven models entering the expansion stage with unit economics that work.

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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.