VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Saturday, January 10, 2026

Stock Comparison

Air Liquide S.A. vs Judges Scientific plc

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

Air Liquide S.A.

AI · Euronext Paris

Market cap (USD)$91.6B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorMaterials
IndustryChemicals - Specialty
CountryFR
Data as of2026-01-08
Moat score
58/ 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 Air Liquide S.A.'s moat claims, evidence, and risks.

View AI analysis

Judges Scientific plc

JDG · London Stock Exchange - AIM

Market cap (USD)$384.2M
Gross margin (TTM)31.8%
Operating margin (TTM)16.3%
Net margin (TTM)9.3%
SectorTechnology
IndustryHardware, Equipment & Parts
CountryGB
Data as of2026-01-06
Moat score
63/ 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 Judges Scientific plc's moat claims, evidence, and risks.

View JDG analysis

Comparison highlights

  • Moat score gap: Judges Scientific plc leads (63 / 100 vs 58 / 100 for Air Liquide S.A.).
  • Segment focus: Air Liquide S.A. has 6 segments (44% in Industrial Merchant); Judges Scientific plc has 2 segments (51.7% in Vacuum).
  • Moat breadth: Air Liquide S.A. has 12 moat types across 3 domains; Judges Scientific plc has 3 across 1.

Primary market context

Air Liquide S.A.

Industrial Merchant

Market

Merchant industrial and medical gases distribution (cylinders, bulk liquids) plus related equipment and services

Geography

Global (local/regional distribution markets)

Customer

SMEs and mid-market industrial customers, contractors, labs, and public sector buyers

Role

Distributor + producer (last-mile logistics, cylinder assets, bulk delivery)

Revenue share

44%

Judges Scientific plc

Vacuum

Market

Vacuum and surface-science related instrumentation (e.g., UHV/vacuum components and systems, thin-film/surface engineering adjacent tools)

Geography

Global

Customer

Research labs and high-tech manufacturing

Role

Equipment manufacturer

Revenue share

51.7%

Side-by-side metrics

Air Liquide S.A.
Judges Scientific plc
Ticker / Exchange
AI - Euronext Paris
JDG - London Stock Exchange - AIM
Market cap (USD)
$91.6B
$384.2M
Gross margin (TTM)
n/a
31.8%
Operating margin (TTM)
n/a
16.3%
Net margin (TTM)
n/a
9.3%
Sector
Materials
Technology
Industry
Chemicals - Specialty
Hardware, Equipment & Parts
HQ country
FR
GB
Primary segment
Industrial Merchant
Vacuum
Market structure
Competitive
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
58 / 100
63 / 100
Moat domains
Demand, Supply, Legal
Demand
Last update
2026-01-08
2026-01-06

Moat coverage

Shared moat types

No overlap yet.

Air Liquide S.A. strengths

Long Term ContractsPhysical Network DensityScale Economies Unit CostDistribution ControlOperational ExcellenceService Field NetworkCompliance AdvantageDesign In QualificationSupply Chain ControlIP Choke PointCapex Knowhow ScaleScope Economies

Judges Scientific plc strengths

Brand TrustSwitching Costs GeneralBuy-and-build acquisition engine

Segment mix

Air Liquide S.A. segments

Full profile >

Large Industries

Oligopoly

26%

Industrial Merchant

Competitive

44%

Healthcare

Competitive

16%

Electronics

Oligopoly

9%

Engineering & Construction

Competitive

2%

Global Markets & Technologies

Competitive

3%

Judges Scientific plc segments

Full profile >

Materials Sciences

Competitive

48.4%

Vacuum

Competitive

51.7%

Want the full wide moat stocks list?

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

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Looking for expansion-stage stocks?

Proven models entering the expansion stage with unit economics that work.

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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.