VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

Pro Medicus Limited vs Spirax Group plc

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

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

Spirax Group plc

SPX · London Stock Exchange

Market cap (USD)$5B
Gross margin (TTM)19.6%
Operating margin (TTM)17.2%
Net margin (TTM)10.7%
SectorIndustrials
IndustryIndustrial - Machinery
CountryGB
Data as of2025-12-28
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 Spirax Group plc's moat claims, evidence, and risks.

View SPX analysis

Comparison highlights

  • Moat score gap: Pro Medicus Limited leads (80 / 100 vs 71 / 100 for Spirax Group plc).
  • Segment focus: Pro Medicus Limited has 2 segments (92.5% in Visage 7 Enterprise Imaging Platform (PACS / CloudPACS)); Spirax Group plc has 3 segments (52.1% in Steam Thermal Solutions).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Strong vs Moderate.
  • Moat breadth: Pro Medicus Limited has 6 moat types across 2 domains; Spirax Group plc has 6 across 2.

Primary market context

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%

Spirax Group plc

Steam Thermal Solutions

Market

Industrial and commercial steam systems (condensate management, controls, thermal energy management products and solutions)

Geography

Global

Customer

Industrial process operators and commercial facility operators

Role

OEM / solutions provider

Revenue share

52.1%

Side-by-side metrics

Pro Medicus Limited
Spirax Group plc
Ticker / Exchange
PME - ASX
SPX - London Stock Exchange
Market cap (USD)
$15.5B
$5B
Gross margin (TTM)
n/a
19.6%
Operating margin (TTM)
n/a
17.2%
Net margin (TTM)
n/a
10.7%
Sector
Healthcare
Industrials
Industry
n/a
Industrial - Machinery
HQ country
AU
GB
Primary segment
Visage 7 Enterprise Imaging Platform (PACS / CloudPACS)
Steam Thermal Solutions
Market structure
Oligopoly
Oligopoly
Market share
55% (implied)
n/a
HHI estimate
n/a
n/a
Pricing power
Strong
Moderate
Moat score
80 / 100
71 / 100
Moat domains
Demand, Supply
Supply, Demand
Last update
2026-01-02
2025-12-28

Moat coverage

Shared moat types

Suite Bundling

Pro Medicus Limited strengths

Data Workflow LockinKeystone ComponentOperational ExcellenceSwitching Costs GeneralLong Term Contracts

Spirax Group plc strengths

Service Field NetworkInstalled Base ConsumablesBrand TrustCapex Knowhow ScaleDesign In Qualification

Segment mix

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%

Spirax Group plc segments

Full profile >

Steam Thermal Solutions

Oligopoly

52.1%

Electric Thermal Solutions

Competitive

24.3%

Watson-Marlow Fluid Technology Solutions

Oligopoly

23.6%

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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.