VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

Amgen Inc. vs AstraZeneca PLC

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)$176.5B
Gross margin (TTM)66.2%
Operating margin (TTM)24.1%
Net margin (TTM)19.5%
SectorHealthcare
IndustryDrug Manufacturers - General
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.

Full stock profile

Dive deeper into Amgen Inc.'s moat claims, evidence, and risks.

View AMGN analysis

AstraZeneca PLC

AZN · London Stock Exchange

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorHealthcare
Industry
CountryGB
Data as of2026-01-02
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 AstraZeneca PLC's moat claims, evidence, and risks.

View AZN analysis

Comparison highlights

  • Moat score gap: AstraZeneca PLC leads (71 / 100 vs 70 / 100 for Amgen Inc.).
  • Segment focus: Amgen Inc. has 3 segments (80.1% in Core Innovative Medicines); AstraZeneca PLC has 6 segments (41% in Oncology).
  • Primary market structure: Competitive vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: Amgen Inc. has 5 moat types across 3 domains; AstraZeneca PLC has 4 across 3.

Primary market context

Amgen Inc.

Core Innovative Medicines

Market

Branded biopharmaceutical therapies for common diseases (bone health, inflammation, oncology, cardiovascular and other specialty areas)

Geography

Global

Customer

Payers, providers, and pharmacies

Role

Drug developer/manufacturer

Revenue share

80.1%

AstraZeneca PLC

Oncology

Market

Innovator oncology therapeutics (branded prescription medicines)

Geography

Global

Customer

Hospitals, oncology clinics, payers

Role

Innovator biopharmaceutical company

Revenue share

41%

Side-by-side metrics

Amgen Inc.
AstraZeneca PLC
Ticker / Exchange
AMGN - Nasdaq Stock Market
AZN - London Stock Exchange
Market cap (USD)
$176.5B
n/a
Gross margin (TTM)
66.2%
n/a
Operating margin (TTM)
24.1%
n/a
Net margin (TTM)
19.5%
n/a
Sector
Healthcare
Healthcare
Industry
Drug Manufacturers - General
n/a
HQ country
US
GB
Primary segment
Core Innovative Medicines
Oncology
Market structure
Competitive
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
70 / 100
71 / 100
Moat domains
Legal, Supply, Demand
Legal, Supply, Demand
Last update
2025-12-22
2026-01-02

Moat coverage

Shared moat types

IP Choke PointRegulated Standards PipeCapex Knowhow ScaleBrand Trust

Amgen Inc. strengths

Learning Curve Yield

AstraZeneca PLC strengths

No unique moat types yet.

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%

AstraZeneca PLC segments

Full profile >

Oncology

Oligopoly

41%

Cardiovascular, Renal and Metabolism (CVRM)

Competitive

23%

Respiratory & Immunology (R&I)

Oligopoly

15%

Vaccines & Immune Therapies (V&I)

Oligopoly

3%

Rare Disease

Oligopoly

16%

Other Medicines

Competitive

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.