VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Friday, January 2, 2026

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Stock Comparison

RTX Corporation vs Spirax Group plc

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

RTX Corporation

RTX · New York Stock Exchange

Market cap (USD)—

Gross margin (TTM)—

Operating margin (TTM)—

Net margin (TTM)—

SectorIndustrials

Industry—

CountryUS

Data as of2026-01-02

Moat score

69/ 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 RTX Corporation's moat claims, evidence, and risks.

View RTX 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: Spirax Group plc leads (71 / 100 vs 69 / 100 for RTX Corporation).
Segment focus: RTX Corporation has 3 segments (34.8% in Pratt & Whitney); Spirax Group plc has 3 segments (52.1% in Steam Thermal Solutions).
Moat breadth: RTX Corporation has 8 moat types across 3 domains; Spirax Group plc has 6 across 2.

Primary market context

RTX Corporation

Pratt & Whitney

Market

Aircraft engines & aftermarket services (commercial and military)

Geography

Global

Customer

Airframers, airlines, governments

Role

Engine OEM + MRO

Revenue share

34.8%

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

RTX Corporation

Spirax Group plc

Ticker / Exchange

RTX - New York Stock Exchange

SPX - London Stock Exchange

Market cap (USD)

n/a

$5B

Gross margin (TTM)

n/a

19.6%

Operating margin (TTM)

n/a

17.2%

Net margin (TTM)

n/a

10.7%

Sector

Industrials

Industry

n/a

Industrial - Machinery

HQ country

Primary segment

Pratt & Whitney

Steam Thermal Solutions

Market structure

Oligopoly

Market share

n/a

HHI estimate

n/a

Pricing power

Moderate

Moat score

69 / 100

71 / 100

Moat domains

Demand, Legal, Supply

Supply, Demand

Last update

2026-01-02

2025-12-28

Moat coverage

Shared moat types

Design In QualificationInstalled Base ConsumablesService Field NetworkCapex Knowhow Scale

RTX Corporation strengths

Regulated Standards PipeGovernment Contracting RelationshipsLong Term ContractsCompliance Advantage

Spirax Group plc strengths

Brand TrustSuite Bundling

Segment mix

RTX Corporation segments

Full profile >

Collins Aerospace

Oligopoly

32.1%

Pratt & Whitney

Oligopoly

34.8%

Raytheon

Oligopoly

32.9%

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?

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

View the moat stocks list

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.