VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, January 7, 2026
Stock Comparison
Judges Scientific plc vs Marsh & McLennan Companies, Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Judges Scientific plc
JDG · London Stock Exchange - AIM
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into Judges Scientific plc's moat claims, evidence, and risks.
View JDG analysisMarsh & 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 analysisComparison highlights
- Moat score gap: Marsh & McLennan Companies, Inc. leads (65 / 100 vs 63 / 100 for Judges Scientific plc).
- Segment focus: Judges Scientific plc has 2 segments (51.7% in Vacuum); Marsh & McLennan Companies, Inc. has 2 segments (62.8% in Risk and Insurance Services).
- Primary market structure: Competitive vs Oligopoly. Pricing power: Moderate vs Moderate.
- Moat breadth: Judges Scientific plc has 3 moat types across 1 domains; Marsh & McLennan Companies, Inc. has 5 across 3.
Primary market context
Judges Scientific plc
Vacuum
Vacuum and surface-science related instrumentation (e.g., UHV/vacuum components and systems, thin-film/surface engineering adjacent tools)
Global
Research labs and high-tech manufacturing
Equipment manufacturer
51.7%
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%
Side-by-side metrics
Moat coverage
Shared moat types
Judges Scientific plc strengths
Marsh & McLennan Companies, Inc. strengths
Segment mix
Judges Scientific plc segments
Full profile >Materials Sciences
Competitive
Vacuum
Competitive
Marsh & McLennan Companies, Inc. segments
Full profile >Risk and Insurance Services
Oligopoly
Consulting
Competitive
Want the full wide moat stocks list?
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View the moat stocks listLooking for expansion-stage stocks?
Proven models entering the expansion stage with unit economics that work.
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.