VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Saturday, January 10, 2026

Stock Comparison

Arthur J. Gallagher & Co. vs Gartner, Inc.

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

Arthur J. Gallagher & Co.

AJG · New York Stock Exchange

Market cap (USD)$67.9B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorFinancials
IndustryInsurance - Brokers
CountryUS
Data as of2026-01-09
Moat score
69/ 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 Arthur J. Gallagher & Co.'s moat claims, evidence, and risks.

View AJG analysis

Gartner, Inc.

IT · New York Stock Exchange

Market cap (USD)$19B
Gross margin (TTM)68.2%
Operating margin (TTM)15.6%
Net margin (TTM)13.7%
SectorTechnology
IndustryInformation Technology Services
CountryUS
Data as of2025-12-30
Moat score
74/ 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 Gartner, Inc.'s moat claims, evidence, and risks.

View IT analysis

Comparison highlights

  • Moat score gap: Gartner, Inc. leads (74 / 100 vs 69 / 100 for Arthur J. Gallagher & Co.).
  • Segment focus: Arthur J. Gallagher & Co. has 2 segments (86% in Brokerage); Gartner, Inc. has 3 segments (81.8% in Insights).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: Arthur J. Gallagher & Co. has 4 moat types across 2 domains; Gartner, Inc. has 4 across 2.

Primary market context

Arthur J. Gallagher & Co.

Brokerage

Market

Insurance and reinsurance brokerage and consulting

Geography

Global

Customer

Commercial, industrial, public sector, nonprofit and other organizations; underwriting enterprises for reinsurance placements

Role

Intermediary / broker / advisor

Revenue share

86%

Gartner, Inc.

Insights

Market

IT research and executive advisory subscriptions (insights, benchmarks, and expert access)

Geography

Global

Customer

Enterprise executives and teams (technology leaders and business function leaders)

Role

Subscription-based analyst and advisory provider

Revenue share

81.8%

Side-by-side metrics

Arthur J. Gallagher & Co.
Gartner, Inc.
Ticker / Exchange
AJG - New York Stock Exchange
IT - New York Stock Exchange
Market cap (USD)
$67.9B
$19B
Gross margin (TTM)
n/a
68.2%
Operating margin (TTM)
n/a
15.6%
Net margin (TTM)
n/a
13.7%
Sector
Financials
Technology
Industry
Insurance - Brokers
Information Technology Services
HQ country
US
US
Primary segment
Brokerage
Insights
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
69 / 100
74 / 100
Moat domains
Supply, Demand
Demand, Network
Last update
2026-01-09
2025-12-30

Moat coverage

Shared moat types

Brand Trust

Arthur J. Gallagher & Co. strengths

Service Field NetworkData Workflow LockinOperational Excellence

Gartner, Inc. strengths

Switching Costs GeneralSuite BundlingTwo Sided Network

Segment mix

Arthur J. Gallagher & Co. segments

Full profile >

Brokerage

Oligopoly

86%

Risk Management

Competitive

14%

Gartner, Inc. segments

Full profile >

Insights

Oligopoly

81.8%

Conferences

Competitive

9.3%

Consulting

Competitive

8.9%

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.