VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Saturday, January 10, 2026

Stock Comparison

Arthur J. Gallagher & Co. vs Mastercard Incorporated

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

Mastercard Incorporated

MA · New York Stock Exchange

Market cap (USD)$516.8B
Gross margin (TTM)77.5%
Operating margin (TTM)57%
Net margin (TTM)45.3%
SectorFinancials
IndustryFinancial - Credit Services
CountryUS
Data as of2025-12-21
Moat score
77/ 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 Mastercard Incorporated's moat claims, evidence, and risks.

View MA analysis

Comparison highlights

  • Moat score gap: Mastercard Incorporated leads (77 / 100 vs 69 / 100 for Arthur J. Gallagher & Co.).
  • Segment focus: Arthur J. Gallagher & Co. has 2 segments (86% in Brokerage); Mastercard Incorporated has 2 segments (61.5% in Payment Network).
  • Moat breadth: Arthur J. Gallagher & Co. has 4 moat types across 2 domains; Mastercard Incorporated has 6 across 3.

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%

Mastercard Incorporated

Payment Network

Market

Four-party card payment network (switching, acceptance, and network-related services)

Geography

Global

Customer

Issuers, acquirers, merchants, account holders

Role

Network operator (authorization, clearing, settlement) and rules/standards steward

Revenue share

61.5%

Side-by-side metrics

Arthur J. Gallagher & Co.
Mastercard Incorporated
Ticker / Exchange
AJG - New York Stock Exchange
MA - New York Stock Exchange
Market cap (USD)
$67.9B
$516.8B
Gross margin (TTM)
n/a
77.5%
Operating margin (TTM)
n/a
57%
Net margin (TTM)
n/a
45.3%
Sector
Financials
Financials
Industry
Insurance - Brokers
Financial - Credit Services
HQ country
US
US
Primary segment
Brokerage
Payment Network
Market structure
Oligopoly
Oligopoly
Market share
n/a
29.7% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
69 / 100
77 / 100
Moat domains
Supply, Demand
Network, Demand, Legal
Last update
2026-01-09
2025-12-21

Moat coverage

Shared moat types

Brand TrustData Workflow Lockin

Arthur J. Gallagher & Co. strengths

Service Field NetworkOperational Excellence

Mastercard Incorporated strengths

Two Sided NetworkClearing SettlementRegulated Standards PipeData Network Effects

Segment mix

Arthur J. Gallagher & Co. segments

Full profile >

Brokerage

Oligopoly

86%

Risk Management

Competitive

14%

Mastercard Incorporated segments

Full profile >

Payment Network

Oligopoly

61.5%

Value-Added Services and Solutions

Competitive

38.5%

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.