VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 9, 2026

Stock Comparison

HEICO Corporation vs Judges Scientific plc

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

HEICO Corporation

HEI · NYSE

Market cap (USD)$47.5B
Gross margin (TTM)41.1%
Operating margin (TTM)22.9%
Net margin (TTM)15.4%
SectorIndustrials
IndustryAerospace & Defense
CountryUS
Data as of2025-12-30
Moat score
77/ 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 HEICO Corporation's moat claims, evidence, and risks.

View HEI analysis

Judges Scientific plc

JDG · London Stock Exchange - AIM

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorTechnology
Industry
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: HEICO Corporation leads (77 / 100 vs 63 / 100 for Judges Scientific plc).
  • Segment focus: HEICO Corporation has 2 segments (69.5% in Flight Support Group (FSG)); Judges Scientific plc has 2 segments (51.7% in Vacuum).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: HEICO Corporation has 6 moat types across 3 domains; Judges Scientific plc has 3 across 1.

Primary market context

HEICO Corporation

Flight Support Group (FSG)

Market

Aerospace aftermarket replacement parts and MRO services (jet engine and aircraft components), including FAA-approved PMA parts

Geography

Global

Customer

Commercial airlines, cargo carriers, MROs, OEMs, and government/military customers

Role

Aftermarket parts manufacturer + MRO/repair provider + distributor

Revenue share

69.5%

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

HEICO Corporation
Judges Scientific plc
Ticker / Exchange
HEI - NYSE
JDG - London Stock Exchange - AIM
Market cap (USD)
$47.5B
n/a
Gross margin (TTM)
41.1%
n/a
Operating margin (TTM)
22.9%
n/a
Net margin (TTM)
15.4%
n/a
Sector
Industrials
Technology
Industry
Aerospace & Defense
n/a
HQ country
US
GB
Primary segment
Flight Support Group (FSG)
Vacuum
Market structure
Oligopoly
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
77 / 100
63 / 100
Moat domains
Legal, Supply, Demand
Demand
Last update
2025-12-30
2026-01-06

Moat coverage

Shared moat types

Brand Trust

HEICO Corporation strengths

Regulated Standards PipeLearning Curve YieldDesign In QualificationIP Choke PointGovernment Contracting Relationships

Judges Scientific plc strengths

Switching Costs GeneralBuy-and-build acquisition engine

Segment mix

HEICO Corporation segments

Full profile >

Flight Support Group (FSG)

Oligopoly

69.5%

Electronic Technologies Group (ETG)

Oligopoly

30.5%

Judges Scientific plc segments

Full profile >

Materials Sciences

Competitive

48.4%

Vacuum

Competitive

51.7%

Want the full wide moat stocks list?

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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.