VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Thursday, January 8, 2026
Stock Comparison
Marsh & McLennan Companies, Inc. vs Tradeweb Markets Inc.
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 analysisTradeweb Markets Inc.
TW · 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 Tradeweb Markets Inc.'s moat claims, evidence, and risks.
View TW analysisComparison highlights
- Moat score gap: Tradeweb Markets Inc. leads (70 / 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); Tradeweb Markets Inc. has 6 segments (52.4% in Rates).
- Moat breadth: Marsh & McLennan Companies, Inc. has 5 moat types across 3 domains; Tradeweb Markets Inc. has 7 across 4.
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%
Tradeweb Markets Inc.
Rates
Electronic dealer-to-client and all-to-all trading in rates (government bonds, mortgages/TBA MBS, interest rate swaps)
Global
Institutional, wholesale dealers, and retail via ATS
Electronic marketplace / trading venue
52.4%
Side-by-side metrics
Moat coverage
Shared moat types
Marsh & McLennan Companies, Inc. strengths
Tradeweb Markets Inc. strengths
Segment mix
Marsh & McLennan Companies, Inc. segments
Full profile >Risk and Insurance Services
Oligopoly
Consulting
Competitive
Tradeweb Markets Inc. segments
Full profile >Rates
Oligopoly
Credit
Oligopoly
Equities
Competitive
Money Markets
Oligopoly
Market Data
Competitive
Other
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 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.