VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 1, 2026

Stock Comparison

Illinois Tool Works Inc. vs Merck & Co., Inc.

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

Illinois Tool Works Inc.

ITW · New York Stock Exchange

Market cap (USD)
SectorIndustrials
CountryUS
Data as of2025-12-31
Moat score
66/ 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 Illinois Tool Works Inc.'s moat claims, evidence, and risks.

View ITW 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 66 / 100 for Illinois Tool Works Inc.).
  • Segment focus: Illinois Tool Works Inc. has 7 segments (20% in Automotive OEM); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
  • Moat breadth: Illinois Tool Works Inc. has 8 moat types across 3 domains; Merck & Co., Inc. has 5 across 3.

Primary market context

Illinois Tool Works Inc.

Automotive OEM

Market

Automotive OEM engineered components and fasteners

Geography

Global

Customer

Automotive OEMs and Tier suppliers

Role

Component supplier

Revenue share

20%

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

Illinois Tool Works Inc.
Merck & Co., Inc.
Ticker / Exchange
ITW - New York Stock Exchange
MRK - New York Stock Exchange
Market cap (USD)
n/a
$250.9B
Sector
Industrials
Healthcare
HQ country
US
US
Primary segment
Automotive OEM
Pharmaceutical
Market structure
Competitive
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
66 / 100
71 / 100
Moat domains
Demand, Supply, Legal
Legal, Supply, Demand
Last update
2025-12-31
2025-12-22

Moat coverage

Shared moat types

IP Choke Point

Illinois Tool Works Inc. strengths

Design In QualificationOperational ExcellenceBrand TrustService Field NetworkInstalled Base ConsumablesSwitching Costs GeneralFormulation and application engineering know-how

Merck & Co., Inc. strengths

Regulated Standards PipeCapex Knowhow ScaleScope EconomiesData Workflow Lockin

Segment mix

Illinois Tool Works Inc. segments

Full profile >

Automotive OEM

Competitive

20%

Food Equipment

Oligopoly

16.6%

Test & Measurement and Electronics

Oligopoly

17.7%

Welding

Oligopoly

11.6%

Polymers & Fluids

Competitive

11.1%

Construction Products

Competitive

12%

Specialty Products

Oligopoly

10.9%

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.