VOL. XCIV, NO. 247

* WIDE MOAT STOCKS COMPARISON *

NO ADVICE

Monday, December 29, 2025

Stock Comparison

Caterpillar Inc. vs Spirax Group plc

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

Caterpillar Inc.

CAT · New York Stock Exchange

Market cap (USD)
SectorIndustrials
CountryUS
Data as of2025-12-25
Moat score
68/ 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 Caterpillar Inc.'s moat claims, evidence, and risks.

View CAT 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: Spirax Group plc leads (71 / 100 vs 68 / 100 for Caterpillar Inc.).
  • Segment focus: Caterpillar Inc. has 5 segments (40.7% in Energy & Transportation); Spirax Group plc has 3 segments (52.1% in Steam Thermal Solutions).
  • Moat breadth: Caterpillar Inc. has 9 moat types across 4 domains; Spirax Group plc has 6 across 2.

Primary market context

Caterpillar Inc.

Energy & Transportation

Market

Off-highway engines, power generation, turbines, locomotives and related services

Geography

Global

Customer

Energy companies, industrial customers, OEMs, rail and marine operators

Role

OEM + aftermarket parts/service

Revenue share

40.7%

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

Caterpillar Inc.
Spirax Group plc
Ticker / Exchange
CAT - New York Stock Exchange
SPX - London Stock Exchange
Market cap (USD)
n/a
$6.7B
Sector
Industrials
Industrials
HQ country
US
GB
Primary segment
Energy & Transportation
Steam Thermal Solutions
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
68 / 100
71 / 100
Moat domains
Supply, Demand, Financial, Network
Supply, Demand
Last update
2025-12-25
2025-12-28

Moat coverage

Shared moat types

Installed Base ConsumablesBrand TrustService Field NetworkCapex Knowhow ScaleDesign In QualificationSuite Bundling

Caterpillar Inc. strengths

Distribution ControlUnderwriting Risk PoolingEcosystem Complements

Spirax Group plc strengths

No unique moat types yet.

Segment mix

Caterpillar Inc. segments

Full profile >

Construction Industries

Oligopoly

35.9%

Resource Industries

Oligopoly

17.5%

Energy & Transportation

Oligopoly

40.7%

Financial Products

Competitive

5.3%

All Other

Competitive

0.6%

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.