VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Monday, December 29, 2025

Stock Comparison

Amazon.com, Inc. vs Spirax Group plc

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

Amazon.com, Inc.

AMZN · NASDAQ

Market cap (USD)$2.5T
SectorConsumer
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

Spirax Group plc

SPX · London Stock Exchange

Market cap (USD)$6.7B
SectorIndustrials
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: Amazon.com, Inc. leads (87 / 100 vs 71 / 100 for Spirax Group plc).
  • Segment focus: Amazon.com, Inc. has 4 segments (73.5% in Amazon Stores (Retail, Marketplace, Prime Subscriptions)); Spirax Group plc has 3 segments (52.1% in Steam Thermal Solutions).
  • Moat breadth: Amazon.com, Inc. has 10 moat types across 4 domains; Spirax Group plc 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%

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

Amazon.com, Inc.
Spirax Group plc
Ticker / Exchange
AMZN - NASDAQ
SPX - London Stock Exchange
Market cap (USD)
$2.5T
$6.7B
Sector
Consumer
Industrials
HQ country
US
GB
Primary segment
Amazon Stores (Retail, Marketplace, Prime Subscriptions)
Steam Thermal Solutions
Market structure
Oligopoly
Oligopoly
Market share
39%-42% (estimated)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
87 / 100
71 / 100
Moat domains
Supply, Demand, Network, Financial
Supply, Demand
Last update
2025-12-29
2025-12-28

Moat coverage

Shared moat types

Capex Knowhow ScaleSuite Bundling

Amazon.com, Inc. strengths

Scope EconomiesLong Term ContractsTwo Sided NetworkPhysical Network DensityHabit DefaultNegative Working CapitalDistribution ControlData Network Effects

Spirax Group plc strengths

Service Field NetworkInstalled Base ConsumablesBrand TrustDesign In Qualification

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%

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%

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.