VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Tuesday, December 30, 2025

Stock Comparison

Moody's Corporation vs Sanofi

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

Moody's Corporation

MCO · New York Stock Exchange

Market cap (USD)
SectorFinancials
CountryUS
Data as of2025-12-21
Moat score
79/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Moody's Corporation's moat claims, evidence, and risks.

View MCO analysis

Sanofi

SAN · Euronext Paris

Market cap (USD)
SectorHealthcare
CountryFR
Data as of2025-12-30
Moat score
74/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

Dive deeper into Sanofi's moat claims, evidence, and risks.

View SAN analysis

Comparison highlights

  • Moat score gap: Moody's Corporation leads (79 / 100 vs 74 / 100 for Sanofi).
  • Segment focus: Moody's Corporation has 2 segments (53.5% in Moody's Investors Service (Credit Ratings)); Sanofi has 3 segments (79.8% in Pharma (Prescription Medicines)).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Strong vs Moderate.
  • Moat breadth: Moody's Corporation has 5 moat types across 4 domains; Sanofi has 5 across 3.

Primary market context

Moody's Corporation

Moody's Investors Service (Credit Ratings)

Market

Credit ratings and ratings-related research

Geography

Global

Customer

Issuers, investors, regulators

Role

Credit rating agency / research provider

Revenue share

53.5%

Sanofi

Pharma (Prescription Medicines)

Market

Branded prescription pharmaceuticals (immunology, rare disease, neurology, oncology, general medicines)

Geography

Global

Customer

Patients via payers/providers and channel partners (wholesalers, pharmacies, hospitals)

Role

Research-based drug developer, manufacturer, and marketer

Revenue share

79.8%

Side-by-side metrics

Moody's Corporation
Sanofi
Ticker / Exchange
MCO - New York Stock Exchange
SAN - Euronext Paris
Market cap (USD)
n/a
n/a
Sector
Financials
Healthcare
HQ country
US
FR
Primary segment
Moody's Investors Service (Credit Ratings)
Pharma (Prescription Medicines)
Market structure
Oligopoly
Oligopoly
Market share
29%-32% (estimated)
n/a
HHI estimate
3,568
n/a
Pricing power
Strong
Moderate
Moat score
79 / 100
74 / 100
Moat domains
Legal, Network, Demand, Supply
Legal, Supply, Demand
Last update
2025-12-21
2025-12-30

Moat coverage

Shared moat types

Regulated Standards PipeBrand Trust

Moody's Corporation strengths

De Facto StandardData Workflow LockinScope Economies

Sanofi strengths

IP Choke PointLearning Curve YieldDistribution Control

Segment mix

Moody's Corporation segments

Full profile >

Moody's Investors Service (Credit Ratings)

Oligopoly

53.5%

Moody's Analytics (Risk & Data/Software)

Competitive

46.5%

Sanofi segments

Full profile >

Pharma (Prescription Medicines)

Oligopoly

79.8%

Vaccines

Oligopoly

20.2%

Opella (Consumer Healthcare - Sanofi minority stake)

Competitive

n/a

Want the full wide moat stocks list?

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Curation & 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.