VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, December 31, 2025
Stock Comparison
MarketAxess Holdings Inc. vs Marsh & McLennan Companies, Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
MarketAxess Holdings Inc.
MKTX · NASDAQ Global Select Market
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into MarketAxess Holdings Inc.'s moat claims, evidence, and risks.
View MKTX 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: MarketAxess Holdings Inc. leads (74 / 100 vs 65 / 100 for Marsh & McLennan Companies, Inc.).
- Segment focus: MarketAxess Holdings Inc. has 2 segments (87.1% in Trade Execution Solutions); Marsh & McLennan Companies, Inc. has 2 segments (62.8% in Risk and Insurance Services).
- Moat breadth: MarketAxess Holdings Inc. has 6 moat types across 3 domains; Marsh & McLennan Companies, Inc. has 5 across 3.
Primary market context
MarketAxess Holdings Inc.
Trade Execution Solutions
Electronic fixed-income trade execution platforms (credit and rates)
Global
Institutional investors, broker-dealers, and alternative liquidity providers
Electronic trading venue / marketplace operator
87.1%
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
MarketAxess Holdings Inc. strengths
Marsh & McLennan Companies, Inc. strengths
Segment mix
MarketAxess Holdings Inc. segments
Full profile >Trade Execution Solutions
Oligopoly
Services (Data, Post-Trade and Technology)
Competitive
Marsh & McLennan Companies, Inc. segments
Full profile >Risk and Insurance Services
Oligopoly
Consulting
Competitive
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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.