VOL. XCIV, NO. 247

* MOAT STOCKS COMPARISON *

NO ADVICE

Friday, December 26, 2025

Stock Comparison

Merck & Co., Inc. vs Northrop Grumman Corporation

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

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.

View full moat analysis >

Northrop Grumman Corporation

NOC · New York Stock Exchange

Market cap (USD)$83.1B
SectorIndustrials
CountryUS
Data as of2025-12-26
Moat score
72/ 100

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

View full moat analysis >

Side-by-side metrics

Merck & Co., Inc.
Northrop Grumman Corporation
Ticker / Exchange
MRK - New York Stock Exchange
NOC - New York Stock Exchange
Market cap (USD)
$250.9B
$83.1B
Sector
Healthcare
Industrials
HQ country
US
US
Primary segment
Pharmaceutical
Aeronautics Systems
Market structure
Competitive
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
71 / 100
72 / 100
Moat domains
Legal, Supply, Demand
Legal, Demand, Supply
Last update
2025-12-22
2025-12-26

Moat coverage

Shared moat types

Capex Knowhow Scale

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeScope EconomiesData Workflow Lockin

Northrop Grumman Corporation strengths

Government Contracting RelationshipsDesign In QualificationCompliance AdvantageCapacity MoatSwitching Costs General

Segment mix

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

Northrop Grumman Corporation segments

Full profile >

Aeronautics Systems

Oligopoly

28.7%

Defense Systems

Oligopoly

18.8%

Mission Systems

Oligopoly

24.9%

Space Systems

Oligopoly

27.6%

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 Pricing, features, and availability may be incomplete or out of date.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.