VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Sunday, January 11, 2026
Stock Comparison
Arthur J. Gallagher & Co. vs London Stock Exchange Group plc
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
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 analysisLondon Stock Exchange Group plc
LSEG · London Stock Exchange
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into London Stock Exchange Group plc's moat claims, evidence, and risks.
View LSEG analysisComparison highlights
- Moat score gap: London Stock Exchange Group plc leads (74 / 100 vs 69 / 100 for Arthur J. Gallagher & Co.).
- Segment focus: Arthur J. Gallagher & Co. has 2 segments (86% in Brokerage); London Stock Exchange Group plc has 5 segments (51% in Data & Analytics).
- Moat breadth: Arthur J. Gallagher & Co. has 4 moat types across 2 domains; London Stock Exchange Group plc has 8 across 4.
Primary market context
Arthur J. Gallagher & Co.
Brokerage
Insurance and reinsurance brokerage and consulting
Global
Commercial, industrial, public sector, nonprofit and other organizations; underwriting enterprises for reinsurance placements
Intermediary / broker / advisor
86%
London Stock Exchange Group plc
Data & Analytics
Financial market data, analytics and workflows (terminals and enterprise feeds)
Global
Financial institutions and corporates
Data & analytics vendor
51%
Side-by-side metrics
Moat coverage
Shared moat types
Arthur J. Gallagher & Co. strengths
London Stock Exchange Group plc strengths
Segment mix
Arthur J. Gallagher & Co. segments
Full profile >Brokerage
Oligopoly
Risk Management
Competitive
London Stock Exchange Group plc segments
Full profile >Data & Analytics
Oligopoly
FTSE Russell
Oligopoly
Risk Intelligence
Oligopoly
Capital Markets
Oligopoly
Post Trade
Quasi-Monopoly
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View expansion-stage stocksCuration & 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.