VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Sunday, January 11, 2026

Stock Comparison

Arthur J. Gallagher & Co. vs Amgen 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

Amgen Inc.

AMGN · Nasdaq Stock Market

Market cap (USD)$175.6B
Gross margin (TTM)66.2%
Operating margin (TTM)24.1%
Net margin (TTM)19.5%
SectorHealthcare
IndustryDrug Manufacturers - General
CountryUS
Data as of2025-12-22
Moat score
70/ 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 Amgen Inc.'s moat claims, evidence, and risks.

View AMGN analysis

Comparison highlights

  • Moat score gap: Amgen Inc. leads (70 / 100 vs 69 / 100 for Arthur J. Gallagher & Co.).
  • Segment focus: Arthur J. Gallagher & Co. has 2 segments (86% in Brokerage); Amgen Inc. has 3 segments (80.1% in Core Innovative Medicines).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: Arthur J. Gallagher & Co. has 4 moat types across 2 domains; Amgen Inc. has 5 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%

Amgen Inc.

Core Innovative Medicines

Market

Branded biopharmaceutical therapies for common diseases (bone health, inflammation, oncology, cardiovascular and other specialty areas)

Geography

Global

Customer

Payers, providers, and pharmacies

Role

Drug developer/manufacturer

Revenue share

80.1%

Side-by-side metrics

Arthur J. Gallagher & Co.
Amgen Inc.
Ticker / Exchange
AJG - New York Stock Exchange
AMGN - Nasdaq Stock Market
Market cap (USD)
$67.9B
$175.6B
Gross margin (TTM)
n/a
66.2%
Operating margin (TTM)
n/a
24.1%
Net margin (TTM)
n/a
19.5%
Sector
Financials
Healthcare
Industry
Insurance - Brokers
Drug Manufacturers - General
HQ country
US
US
Primary segment
Brokerage
Core Innovative Medicines
Market structure
Oligopoly
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
69 / 100
70 / 100
Moat domains
Supply, Demand
Legal, Supply, Demand
Last update
2026-01-09
2025-12-22

Moat coverage

Shared moat types

Brand Trust

Arthur J. Gallagher & Co. strengths

Service Field NetworkData Workflow LockinOperational Excellence

Amgen Inc. strengths

IP Choke PointRegulated Standards PipeCapex Knowhow ScaleLearning Curve Yield

Segment mix

Arthur J. Gallagher & Co. segments

Full profile >

Brokerage

Oligopoly

86%

Risk Management

Competitive

14%

Amgen Inc. segments

Full profile >

Core Innovative Medicines

Competitive

80.1%

Rare Disease Portfolio (Horizon + others)

Quasi-Monopoly

13.3%

Biosimilars

Oligopoly

6.6%

Want the full wide moat stocks list?

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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.