VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Monday, December 29, 2025

Stock Comparison

Unicharm Corporation vs West Pharmaceutical Services, Inc.

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

Unicharm Corporation

8113 · Tokyo Stock Exchange

Market cap (USD)
SectorConsumer
CountryJP
Data as of2025-12-29
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 Unicharm Corporation's moat claims, evidence, and risks.

View 8113 analysis

West Pharmaceutical Services, Inc.

WST · New York Stock Exchange

Market cap (USD)
SectorHealthcare
CountryUS
Data as of2025-12-22
Moat score
85/ 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 West Pharmaceutical Services, Inc.'s moat claims, evidence, and risks.

View WST analysis

Comparison highlights

  • Moat score gap: West Pharmaceutical Services, Inc. leads (85 / 100 vs 60 / 100 for Unicharm Corporation).
  • Segment focus: Unicharm Corporation has 5 segments; West Pharmaceutical Services, Inc. has 2 segments (80.7% in Proprietary Products).
  • Primary market structure: Oligopoly vs Quasi-Monopoly. Pricing power: Moderate vs Moderate.
  • Moat breadth: Unicharm Corporation has 7 moat types across 3 domains; West Pharmaceutical Services, Inc. has 5 across 3.

Primary market context

Unicharm Corporation

Baby and Child Care Products

Market

Disposable baby diapers and baby wipes

Geography

Japan, Asia, Middle East, and selected other markets

Customer

Consumers (parents/caregivers)

Role

Branded manufacturer

West Pharmaceutical Services, Inc.

Proprietary Products

Market

Injectable primary packaging components and containment/delivery systems (elastomeric stoppers, seals, plungers, syringe/cartridge components; related services)

Geography

Global

Customer

Biologic, generic, and pharmaceutical drug manufacturers

Role

Primary packaging and delivery component supplier

Revenue share

80.7%

Side-by-side metrics

Unicharm Corporation
West Pharmaceutical Services, Inc.
Ticker / Exchange
8113 - Tokyo Stock Exchange
WST - New York Stock Exchange
Market cap (USD)
n/a
n/a
Sector
Consumer
Healthcare
HQ country
JP
US
Primary segment
Baby and Child Care Products
Proprietary Products
Market structure
Oligopoly
Quasi-Monopoly
Market share
35%-84% (reported)
70%-75% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
60 / 100
85 / 100
Moat domains
Demand, Supply, Legal
Demand, Legal, Supply
Last update
2025-12-29
2025-12-22

Moat coverage

Shared moat types

Brand TrustCapex Knowhow ScaleOperational Excellence

Unicharm Corporation strengths

Distribution ControlHabit DefaultTraining Org Change CostsIP Choke Point

West Pharmaceutical Services, Inc. strengths

Design In QualificationCompliance Advantage

Segment mix

Unicharm Corporation segments

Full profile >

Baby and Child Care Products

Oligopoly

n/a

Feminine Care Products

Oligopoly

n/a

Wellness Care Products (Adult Incontinence)

Oligopoly

n/a

Pet Care Products

Competitive

n/a

Industrial Materials and Other Businesses

Competitive

n/a

West Pharmaceutical Services, Inc. segments

Full profile >

Proprietary Products

Quasi-Monopoly

80.7%

Contract-Manufactured Products

Competitive

19.3%

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.