VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Stock Comparison

AstraZeneca PLC vs DexCom, Inc.

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

AstraZeneca PLC

AZN · London Stock Exchange

Market cap (USD)$294.4B
Gross margin (TTM)78.2%
Operating margin (TTM)23.3%
Net margin (TTM)17.4%
SectorHealthcare
IndustryDrug Manufacturers - General
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

DexCom, Inc.

DXCM · Nasdaq Global Select Market

Market cap (USD)$23.6B
Gross margin (TTM)60.1%
Operating margin (TTM)19.6%
Net margin (TTM)17.9%
SectorHealthcare
IndustryMedical - Devices
CountryUS
Data as of2026-04-24
Moat score
82/ 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 DexCom, Inc.'s moat claims, evidence, and risks.

View DXCM analysis

Comparison highlights

  • Moat score gap: DexCom, Inc. leads (82 / 100 vs 71 / 100 for AstraZeneca PLC).
  • Segment focus: AstraZeneca PLC has 6 segments (41% in Oncology); DexCom, Inc. has 1 segment (100% in Continuous glucose monitoring systems).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Strong vs Moderate.
  • Moat breadth: AstraZeneca PLC has 4 moat types across 3 domains; DexCom, Inc. has 5 across 3.

Primary market context

AstraZeneca PLC

Oncology

Market

Innovator oncology therapeutics (branded prescription medicines)

Geography

Global

Customer

Hospitals, oncology clinics, payers

Role

Innovator biopharmaceutical company

Revenue share

41%

DexCom, Inc.

Continuous glucose monitoring systems

Market

Global continuous glucose monitoring systems and glucose biosensing devices

Geography

Global, with FY2025 revenue 71.5% United States and 28.5% international

Customer

People with diabetes, metabolic-health users, caregivers, clinicians, payors, distributors and pharmacy channels

Role

CGM device manufacturer, disposable sensor supplier, software/data platform and distribution partner

Revenue share

100%

Side-by-side metrics

AstraZeneca PLC
DexCom, Inc.
Ticker / Exchange
AZN - London Stock Exchange
DXCM - Nasdaq Global Select Market
Market cap (USD)
$294.4B
$23.6B
Gross margin (TTM)
78.2%
60.1%
Operating margin (TTM)
23.3%
19.6%
Net margin (TTM)
17.4%
17.9%
Sector
Healthcare
Healthcare
Industry
Drug Manufacturers - General
Medical - Devices
HQ country
GB
US
Primary segment
Oncology
Continuous glucose monitoring systems
Market structure
Oligopoly
Oligopoly
Market share
n/a
35.1% (estimated)
HHI estimate
n/a
4,452
Pricing power
Strong
Moderate
Moat score
71 / 100
82 / 100
Moat domains
Legal, Supply, Demand
Demand, Network, Legal
Last update
2026-01-02
2026-04-24

Moat coverage

Shared moat types

Regulated Standards PipeBrand Trust

AstraZeneca PLC strengths

IP Choke PointCapex Knowhow Scale

DexCom, Inc. strengths

Installed Base ConsumablesEcosystem ComplementsData Workflow Lockin

Segment mix

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%

DexCom, Inc. segments

Full profile >

Continuous glucose monitoring systems

Oligopoly

100%

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Proven models entering the expansion stage with unit economics that work.

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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.