VOL. XCIV, NO. 247

* WIDE MOAT STOCKS COMPARISON *

NO ADVICE

Monday, December 29, 2025

Stock Comparison

Spirax Group plc vs Teradyne, Inc.

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

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

Teradyne, Inc.

TER · Nasdaq Stock Market

Market cap (USD)$31B
SectorTechnology
CountryUS
Data as of2025-12-23
Moat score
79/ 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 Teradyne, Inc.'s moat claims, evidence, and risks.

View TER analysis

Comparison highlights

  • Moat score gap: Teradyne, Inc. leads (79 / 100 vs 71 / 100 for Spirax Group plc).
  • Segment focus: Spirax Group plc has 3 segments (52.1% in Steam Thermal Solutions); Teradyne, Inc. has 3 segments (77.9% in Semiconductor Test).
  • Primary market structure: Oligopoly vs Duopoly. Pricing power: Moderate vs Moderate.
  • Moat breadth: Spirax Group plc has 6 moat types across 2 domains; Teradyne, Inc. has 6 across 3.

Primary market context

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%

Teradyne, Inc.

Semiconductor Test

Market

Semiconductor automated test equipment (ATE) and system-level test (SLT)

Geography

Global

Customer

IDMs, foundries, fabless, OSATs

Role

Capital equipment supplier

Revenue share

77.9%

Side-by-side metrics

Spirax Group plc
Teradyne, Inc.
Ticker / Exchange
SPX - London Stock Exchange
TER - Nasdaq Stock Market
Market cap (USD)
$6.7B
$31B
Sector
Industrials
Technology
HQ country
GB
US
Primary segment
Steam Thermal Solutions
Semiconductor Test
Market structure
Oligopoly
Duopoly
Market share
n/a
27%-30% (implied)
HHI estimate
n/a
3,565
Pricing power
Moderate
Moderate
Moat score
71 / 100
79 / 100
Moat domains
Supply, Demand
Demand, Supply, Network
Last update
2025-12-28
2025-12-23

Moat coverage

Shared moat types

Brand TrustCapex Knowhow ScaleDesign In Qualification

Spirax Group plc strengths

Service Field NetworkInstalled Base ConsumablesSuite Bundling

Teradyne, Inc. strengths

Format Lock InSwitching Costs GeneralEcosystem Complements

Segment mix

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%

Teradyne, Inc. segments

Full profile >

Semiconductor Test

Duopoly

77.9%

Product Test

Competitive

11.7%

Robotics

Competitive

10.4%

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.