VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Sunday, January 11, 2026
Stock Comparison
Marsh & McLennan Companies, Inc. vs Rightmove plc
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 analysisRightmove plc
RMV · 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 Rightmove plc's moat claims, evidence, and risks.
View RMV analysisComparison highlights
- Moat score gap: Rightmove plc leads (88 / 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); Rightmove plc has 3 segments (71.8% in Agency).
- Primary market structure: Oligopoly vs Quasi-Monopoly. Pricing power: Moderate vs Strong.
- Moat breadth: Marsh & McLennan Companies, Inc. has 5 moat types across 3 domains; Rightmove plc has 5 across 2.
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%
Rightmove plc
Agency
UK residential property portal advertising subscriptions and lead generation for estate and letting agents
United Kingdom
Property professionals (estate and letting agents)
Two-sided marketplace operator (consumers <-> agents)
71.8%
Side-by-side metrics
Moat coverage
Shared moat types
Marsh & McLennan Companies, Inc. strengths
Rightmove plc strengths
Segment mix
Marsh & McLennan Companies, Inc. segments
Full profile >Risk and Insurance Services
Oligopoly
Consulting
Competitive
Rightmove plc segments
Full profile >Agency
Quasi-Monopoly
New Homes
Oligopoly
Other
Competitive
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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.