VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 8, 2026

Stock Comparison

Automatic Data Processing, Inc. vs Judges Scientific plc

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

Automatic Data Processing, Inc.

ADP · NASDAQ

Market cap (USD)$104.1B
Gross margin (TTM)49.3%
Operating margin (TTM)19.2%
Net margin (TTM)19.8%
SectorTechnology
IndustryStaffing & Employment Services
CountryUS
Data as of2025-12-30
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 Automatic Data Processing, Inc.'s moat claims, evidence, and risks.

View ADP 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: Automatic Data Processing, Inc. leads (71 / 100 vs 63 / 100 for Judges Scientific plc).
  • Segment focus: Automatic Data Processing, Inc. has 2 segments (67.5% in Employer Services); Judges Scientific plc has 2 segments (51.7% in Vacuum).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: Automatic Data Processing, Inc. has 7 moat types across 4 domains; Judges Scientific plc has 3 across 1.

Primary market context

Automatic Data Processing, Inc.

Employer Services

Market

Payroll processing and cloud HCM (HR, time, talent, tax, benefits) software and outsourcing

Geography

Global

Customer

Businesses (SMB to large enterprise)

Role

SaaS and managed services provider

Revenue share

67.5%

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

Automatic Data Processing, Inc.
Judges Scientific plc
Ticker / Exchange
ADP - NASDAQ
JDG - London Stock Exchange - AIM
Market cap (USD)
$104.1B
n/a
Gross margin (TTM)
49.3%
n/a
Operating margin (TTM)
19.2%
n/a
Net margin (TTM)
19.8%
n/a
Sector
Technology
Technology
Industry
Staffing & Employment Services
n/a
HQ country
US
GB
Primary segment
Employer Services
Vacuum
Market structure
Oligopoly
Competitive
Market share
16.7% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
71 / 100
63 / 100
Moat domains
Demand, Legal, Supply, Financial
Demand
Last update
2025-12-30
2026-01-06

Moat coverage

Shared moat types

Switching Costs General

Automatic Data Processing, Inc. strengths

Compliance AdvantageScale Economies Unit CostFloat PrepaymentRegulated Standards PipeSuite BundlingUnderwriting Risk Pooling

Judges Scientific plc strengths

Brand TrustBuy-and-build acquisition engine

Segment mix

Automatic Data Processing, Inc. segments

Full profile >

Employer Services

Oligopoly

67.5%

Professional Employer Organization (PEO) Services

Competitive

32.5%

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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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.