VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Saturday, January 3, 2026

Stock Comparison

Amazon.com, Inc. vs Pro Medicus Limited

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

Amazon.com, Inc.

AMZN · NASDAQ

Market cap (USD)$2.4T
Gross margin (TTM)50.1%
Operating margin (TTM)11%
Net margin (TTM)11.1%
SectorConsumer
IndustrySpecialty Retail
CountryUS
Data as of2025-12-29
Moat score
87/ 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 Amazon.com, Inc.'s moat claims, evidence, and risks.

View AMZN analysis

Pro Medicus Limited

PME · ASX

Market cap (USD)$15.5B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorHealthcare
Industry
CountryAU
Data as of
Moat score
80/ 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 Pro Medicus Limited's moat claims, evidence, and risks.

View PME analysis

Comparison highlights

  • Moat score gap: Amazon.com, Inc. leads (87 / 100 vs 80 / 100 for Pro Medicus Limited).
  • Segment focus: Amazon.com, Inc. has 4 segments (73.5% in Amazon Stores (Retail, Marketplace, Prime Subscriptions)); Pro Medicus Limited has 2 segments (92.5% in Visage 7 Enterprise Imaging Platform (PACS / CloudPACS)).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: Amazon.com, Inc. has 10 moat types across 4 domains; Pro Medicus Limited has 6 across 2.

Primary market context

Amazon.com, Inc.

Amazon Stores (Retail, Marketplace, Prime Subscriptions)

Market

US retail ecommerce marketplace and online retail (integrated fulfillment + membership shipping)

Geography

United States

Customer

Consumers and third-party merchants

Role

Marketplace operator, retailer, and fulfillment provider

Revenue share

73.5%

Pro Medicus Limited

Visage 7 Enterprise Imaging Platform (PACS / CloudPACS)

Market

Enterprise imaging / PACS and related modules for hospitals and integrated delivery networks (IDNs)

Geography

Primarily North America; also Europe and Australia

Customer

Hospitals, imaging centers, integrated delivery networks (IDNs)

Role

Healthcare IT software vendor / platform provider

Revenue share

92.5%

Side-by-side metrics

Amazon.com, Inc.
Pro Medicus Limited
Ticker / Exchange
AMZN - NASDAQ
PME - ASX
Market cap (USD)
$2.4T
$15.5B
Gross margin (TTM)
50.1%
n/a
Operating margin (TTM)
11%
n/a
Net margin (TTM)
11.1%
n/a
Sector
Consumer
Healthcare
Industry
Specialty Retail
n/a
HQ country
US
AU
Primary segment
Amazon Stores (Retail, Marketplace, Prime Subscriptions)
Visage 7 Enterprise Imaging Platform (PACS / CloudPACS)
Market structure
Oligopoly
Oligopoly
Market share
39%-42% (estimated)
55% (implied)
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
87 / 100
80 / 100
Moat domains
Supply, Demand, Network, Financial
Demand, Supply
Last update
2025-12-29
2026-01-03

Moat coverage

Shared moat types

Long Term ContractsSuite Bundling

Amazon.com, Inc. strengths

Capex Knowhow ScaleScope EconomiesTwo Sided NetworkPhysical Network DensityHabit DefaultNegative Working CapitalDistribution ControlData Network Effects

Pro Medicus Limited strengths

Data Workflow LockinKeystone ComponentOperational ExcellenceSwitching Costs General

Segment mix

Amazon.com, Inc. segments

Full profile >

Amazon Web Services (AWS)

Oligopoly

16.9%

Amazon Stores (Retail, Marketplace, Prime Subscriptions)

Oligopoly

73.5%

Advertising Services (Amazon Ads / Retail Media)

Oligopoly

8.8%

Other (healthcare, content licensing/distribution, shipping services, co-branded credit card agreements, etc.)

Competitive

0.9%

Pro Medicus Limited segments

Full profile >

Visage 7 Enterprise Imaging Platform (PACS / CloudPACS)

Oligopoly

92.5%

Visage RIS (Radiology Information System) and Promedicus.net

Oligopoly

7.5%

Want the full wide moat stocks list?

Browse the full ranking of wide moat stocks, updated with moat scores and segment context.

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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.