VOL. XCIV, NO. 247

* MOAT STOCKS COMPARISON *

NO ADVICE

Friday, December 26, 2025

Stock Comparison

Amgen Inc. vs Merck & Co., Inc.

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

Amgen Inc.

AMGN · Nasdaq Stock Market

Market cap (USD)
SectorHealthcare
CountryUS
Data as of2025-12-22
Moat score
70/ 100

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

View full moat 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.

View full moat analysis >

Side-by-side metrics

Amgen Inc.
Merck & Co., Inc.
Ticker / Exchange
AMGN - Nasdaq Stock Market
MRK - New York Stock Exchange
Market cap (USD)
n/a
$250.9B
Sector
Healthcare
Healthcare
HQ country
US
US
Primary segment
Core Innovative Medicines
Pharmaceutical
Market structure
Competitive
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
70 / 100
71 / 100
Moat domains
Legal, Supply, Demand
Legal, Supply, Demand
Last update
2025-12-22
2025-12-22

Moat coverage

Shared moat types

IP Choke PointRegulated Standards PipeCapex Knowhow Scale

Amgen Inc. strengths

Brand TrustLearning Curve Yield

Merck & Co., Inc. strengths

Scope EconomiesData Workflow Lockin

Segment mix

Amgen Inc. segments

Full profile >

Core Innovative Medicines

Competitive

80.1%

Rare Disease Portfolio (Horizon + others)

Quasi-Monopoly

13.3%

Biosimilars

Oligopoly

6.6%

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

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 Pricing, features, and availability may be incomplete or out of date.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