VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Friday, January 2, 2026

Stock Comparison

Alphabet Inc. vs Pro Medicus Limited

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

Alphabet Inc.

GOOGL · The Nasdaq Stock Market

Market cap (USD)$3.7T
Gross margin (TTM)59.2%
Operating margin (TTM)32.2%
Net margin (TTM)32.2%
SectorCommunication Services
IndustryInternet Content & Information
CountryUS
Data as of2025-12-21
Moat score
86/ 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 Alphabet Inc.'s moat claims, evidence, and risks.

View GOOGL 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: Alphabet Inc. leads (86 / 100 vs 80 / 100 for Pro Medicus Limited).
  • Segment focus: Alphabet Inc. has 6 segments (56.6% in Google Search & other (Advertising)); Pro Medicus Limited has 2 segments (92.5% in Visage 7 Enterprise Imaging Platform (PACS / CloudPACS)).
  • Primary market structure: Quasi-Monopoly vs Oligopoly. Pricing power: Strong vs Strong.
  • Moat breadth: Alphabet Inc. has 10 moat types across 4 domains; Pro Medicus Limited has 6 across 2.

Primary market context

Alphabet Inc.

Google Search & other (Advertising)

Market

Search advertising (intent-based digital ads)

Geography

Global

Customer

Advertisers (SMB to enterprise)

Role

Ad platform / publisher

Revenue share

56.6%

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

Alphabet Inc.
Pro Medicus Limited
Ticker / Exchange
GOOGL - The Nasdaq Stock Market
PME - ASX
Market cap (USD)
$3.7T
$15.5B
Gross margin (TTM)
59.2%
n/a
Operating margin (TTM)
32.2%
n/a
Net margin (TTM)
32.2%
n/a
Sector
Communication Services
Healthcare
Industry
Internet Content & Information
n/a
HQ country
US
AU
Primary segment
Google Search & other (Advertising)
Visage 7 Enterprise Imaging Platform (PACS / CloudPACS)
Market structure
Quasi-Monopoly
Oligopoly
Market share
88%-91% (reported)
55% (implied)
HHI estimate
8,115
n/a
Pricing power
Strong
Strong
Moat score
86 / 100
80 / 100
Moat domains
Network, Demand, Legal, Supply
Demand, Supply
Last update
2025-12-21
2026-01-02

Moat coverage

Shared moat types

Operational ExcellenceSwitching Costs General

Alphabet Inc. strengths

Data Network EffectsHabit DefaultTwo Sided NetworkContent Rights CurrencyDefault OS GatewayCapex Knowhow ScaleEcosystem ComplementsIncubation & patient capital

Pro Medicus Limited strengths

Data Workflow LockinKeystone ComponentSuite BundlingLong Term Contracts

Segment mix

Alphabet Inc. segments

Full profile >

Google Search & other (Advertising)

Quasi-Monopoly

56.6%

YouTube (Advertising)

Oligopoly

10.3%

Google Network (Advertising)

Competitive

8.7%

Google Subscriptions, Platforms & Devices

Quasi-Monopoly

11.5%

Google Cloud

Oligopoly

12.4%

Other Bets

Competitive

0.5%

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.