VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, December 31, 2025
Stock Comparison
Marsh & McLennan Companies, Inc. vs Thomson Reuters Corporation
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Marsh & McLennan Companies, Inc.
MMC · 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 Marsh & McLennan Companies, Inc.'s moat claims, evidence, and risks.
View MMC analysisThomson Reuters Corporation
TRI · Toronto 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 Thomson Reuters Corporation's moat claims, evidence, and risks.
View TRI analysisComparison highlights
- Moat score gap: Thomson Reuters Corporation leads (84 / 100 vs 65 / 100 for Marsh & McLennan Companies, Inc.).
- Segment focus: Marsh & McLennan Companies, Inc. has 2 segments (62.8% in Risk and Insurance Services); Thomson Reuters Corporation has 5 segments (40.1% in Legal Professionals).
- Primary market structure: Oligopoly vs Duopoly. Pricing power: Moderate vs Strong.
- Moat breadth: Marsh & McLennan Companies, Inc. has 5 moat types across 3 domains; Thomson Reuters Corporation has 4 across 3.
Primary market context
Marsh & McLennan Companies, Inc.
Risk and Insurance Services
Insurance brokerage, risk advisory, and reinsurance brokerage/services
Global
Enterprises, public entities, associations, and individuals (via broker/agent channels)
Intermediary + advisor (insurance/reinsurance market intermediary)
62.8%
Thomson Reuters Corporation
Legal Professionals
Legal research and legal workflow software
Global
Law firms, corporate legal departments, and governments
Subscription software + proprietary legal content
40.1%
Side-by-side metrics
Moat coverage
Shared moat types
Marsh & McLennan Companies, Inc. strengths
Thomson Reuters Corporation strengths
Segment mix
Marsh & McLennan Companies, Inc. segments
Full profile >Risk and Insurance Services
Oligopoly
Consulting
Competitive
Thomson Reuters Corporation segments
Full profile >Legal Professionals
Duopoly
Corporates
Oligopoly
Tax & Accounting Professionals
Oligopoly
Reuters News
Oligopoly
Global Print
Competitive
Want the full wide moat stocks list?
Browse the full ranking of wide moat stocks, updated with moat scores and segment context.
View the moat stocks listCuration & 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.