VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Saturday, January 10, 2026

Stock Comparison

Arthur J. Gallagher & Co. vs Legrand S.A.

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

Legrand S.A.

LR · Euronext Paris

Market cap (USD)$33.2B
Gross margin (TTM)51.1%
Operating margin (TTM)19.5%
Net margin (TTM)13%
SectorIndustrials
IndustryElectrical Equipment & Parts
CountryFR
Data as of2026-01-02
Moat score
68/ 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 Legrand S.A.'s moat claims, evidence, and risks.

View LR analysis

Comparison highlights

  • Moat score gap: Arthur J. Gallagher & Co. leads (69 / 100 vs 68 / 100 for Legrand S.A.).
  • Segment focus: Arthur J. Gallagher & Co. has 2 segments (86% in Brokerage); Legrand S.A. has 2 segments (80% in Building electrical & digital infrastructure (non-datacenter)).
  • Moat breadth: Arthur J. Gallagher & Co. has 4 moat types across 2 domains; Legrand S.A. has 4 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%

Legrand S.A.

Building electrical & digital infrastructure (non-datacenter)

Market

Low-voltage electrical and digital building infrastructure (wiring devices, energy distribution, cable management, building controls)

Geography

Global (strong Europe & North America footprint)

Customer

Professional installers/electricians, electrical wholesalers, OEM/contractors; end-users in residential & commercial buildings

Role

Manufacturer + brand owner; channel-driven distribution

Revenue share

80%

Side-by-side metrics

Arthur J. Gallagher & Co.
Legrand S.A.
Ticker / Exchange
AJG - New York Stock Exchange
LR - Euronext Paris
Market cap (USD)
$67.9B
$33.2B
Gross margin (TTM)
n/a
51.1%
Operating margin (TTM)
n/a
19.5%
Net margin (TTM)
n/a
13%
Sector
Financials
Industrials
Industry
Insurance - Brokers
Electrical Equipment & Parts
HQ country
US
FR
Primary segment
Brokerage
Building electrical & digital infrastructure (non-datacenter)
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
69 / 100
68 / 100
Moat domains
Supply, Demand
Legal, Supply, Demand
Last update
2026-01-09
2026-01-02

Moat coverage

Shared moat types

Brand Trust

Arthur J. Gallagher & Co. strengths

Service Field NetworkData Workflow LockinOperational Excellence

Legrand S.A. strengths

Compliance AdvantageScope EconomiesDesign In Qualification

Segment mix

Arthur J. Gallagher & Co. segments

Full profile >

Brokerage

Oligopoly

86%

Risk Management

Competitive

14%

Legrand S.A. segments

Full profile >

Building electrical & digital infrastructure (non-datacenter)

Oligopoly

80%

Datacenter infrastructure

Oligopoly

20%

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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.