VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Monday, December 29, 2025

Stock Comparison

Kao Corporation vs Merck & Co., Inc.

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

Kao Corporation

4452 · Tokyo Stock Exchange

Market cap (USD)$18.5B
SectorConsumer
CountryJP
Data as of2025-12-28
Moat score
60/ 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 Kao Corporation's moat claims, evidence, and risks.

View 4452 analysis

Merck & Co., Inc.

MRK · New York Stock Exchange

Market cap (USD)$250.9B
SectorHealthcare
CountryUS
Data as of2025-12-22
Moat score
71/ 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 Merck & Co., Inc.'s moat claims, evidence, and risks.

View MRK analysis

Comparison highlights

  • Moat score gap: Merck & Co., Inc. leads (71 / 100 vs 60 / 100 for Kao Corporation).
  • Segment focus: Kao Corporation has 5 segments (33.5% in Hygiene Living Care Business); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: Kao Corporation has 5 moat types across 2 domains; Merck & Co., Inc. has 5 across 3.

Primary market context

Kao Corporation

Hygiene Living Care Business

Market

Household & fabric care and sanitary consumer packaged goods

Geography

Japan and Asia (with select global brands)

Customer

Consumers (retail)

Role

Branded manufacturer

Revenue share

33.5%

Merck & Co., Inc.

Pharmaceutical

Market

Branded prescription pharmaceuticals & human vaccines

Geography

Global

Customer

Wholesalers/retailers, managed care and government payers, hospitals/clinics

Role

R&D-intensive innovator, manufacturer, and marketer

Revenue share

89.5%

Side-by-side metrics

Kao Corporation
Merck & Co., Inc.
Ticker / Exchange
4452 - Tokyo Stock Exchange
MRK - New York Stock Exchange
Market cap (USD)
$18.5B
$250.9B
Sector
Consumer
Healthcare
HQ country
JP
US
Primary segment
Hygiene Living Care Business
Pharmaceutical
Market structure
Oligopoly
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
60 / 100
71 / 100
Moat domains
Demand, Supply
Legal, Supply, Demand
Last update
2025-12-28
2025-12-22

Moat coverage

Shared moat types

Capex Knowhow Scale

Kao Corporation strengths

Brand TrustTraining Org Change CostsService Field NetworkDesign In Qualification

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeScope EconomiesData Workflow Lockin

Segment mix

Kao Corporation segments

Full profile >

Hygiene Living Care Business

Oligopoly

33.5%

Health Beauty Care Business

Competitive

26%

Cosmetics Business

Competitive

15%

Business Connected Business

Competitive

2.4%

Chemical Business

Competitive

23.1%

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

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.