VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Tuesday, December 30, 2025

Stock Comparison

Nabtesco Corporation vs Merck & Co., Inc.

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

Nabtesco Corporation

6268 · Tokyo Stock Exchange

Market cap (USD)
SectorIndustrials
CountryJP
Data as of2025-12-30
Moat score
91/ 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 Nabtesco Corporation's moat claims, evidence, and risks.

View 6268 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: Nabtesco Corporation leads (91 / 100 vs 71 / 100 for Merck & Co., Inc.).
  • Segment focus: Nabtesco Corporation has 4 segments (34.2% in Component Solutions Business); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
  • Primary market structure: Quasi-Monopoly vs Competitive. Pricing power: Strong vs Moderate.
  • Moat breadth: Nabtesco Corporation has 5 moat types across 3 domains; Merck & Co., Inc. has 5 across 3.

Primary market context

Nabtesco Corporation

Component Solutions Business

Market

Precision reduction gears (RV reducers) for industrial robot joints

Geography

Global

Customer

Industrial robot manufacturers (OEMs)

Role

Precision motion-control component supplier

Revenue share

34.2%

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

Nabtesco Corporation
Merck & Co., Inc.
Ticker / Exchange
6268 - Tokyo Stock Exchange
MRK - New York Stock Exchange
Market cap (USD)
n/a
$250.9B
Sector
Industrials
Healthcare
HQ country
JP
US
Primary segment
Component Solutions Business
Pharmaceutical
Market structure
Quasi-Monopoly
Competitive
Market share
55%-65% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Strong
Moderate
Moat score
91 / 100
71 / 100
Moat domains
Supply, Demand, Legal
Legal, Supply, Demand
Last update
2025-12-30
2025-12-22

Moat coverage

Shared moat types

No overlap yet.

Nabtesco Corporation strengths

Learning Curve YieldDesign In QualificationCompliance AdvantageService Field NetworkBrand Trust

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeCapex Knowhow ScaleScope EconomiesData Workflow Lockin

Segment mix

Nabtesco Corporation segments

Full profile >

Component Solutions Business

Quasi-Monopoly

34.2%

Transport Solutions Business

Oligopoly

27.4%

Accessibility Solutions Business

Quasi-Monopoly

33%

Other Businesses

Quasi-Monopoly

5.4%

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.