VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 8, 2026

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Stock Comparison

Judges Scientific plc vs Walmart Inc.

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

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

Walmart Inc.

WMT · New York Stock Exchange

Market cap (USD)$898.6B

Gross margin (TTM)24.9%

Operating margin (TTM)4.1%

Net margin (TTM)3.3%

SectorConsumer

IndustryDiscount Stores

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 Walmart Inc.'s moat claims, evidence, and risks.

View WMT analysis

Comparison highlights

Moat score gap: Walmart Inc. leads (77 / 100 vs 63 / 100 for Judges Scientific plc).
Segment focus: Judges Scientific plc has 2 segments (51.7% in Vacuum); Walmart Inc. has 3 segments (68.3% in Walmart U.S.).
Primary market structure: Competitive vs Competitive. Pricing power: Moderate vs Weak.
Moat breadth: Judges Scientific plc has 3 moat types across 1 domains; Walmart Inc. has 6 across 4.

Primary market context

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%

Walmart Inc.

Walmart U.S.

Market

U.S. omnichannel discount retail and grocery (supercenters, neighborhood markets, eCommerce)

Geography

United States

Customer

Consumers and small businesses; marketplace sellers and advertisers (for marketplace and retail media offerings)

Role

Retailer / marketplace operator / last-mile fulfillment network

Revenue share

68.3%

Side-by-side metrics

Judges Scientific plc

Walmart Inc.

Ticker / Exchange

JDG - London Stock Exchange - AIM

WMT - New York Stock Exchange

Market cap (USD)

n/a

$898.6B

Gross margin (TTM)

n/a

24.9%

Operating margin (TTM)

n/a

4.1%

Net margin (TTM)

n/a

3.3%

Sector

Technology

Consumer

Industry

n/a

Discount Stores

HQ country

Primary segment

Vacuum

Walmart U.S.

Market structure

Competitive

Market share

n/a

20%-22% (reported)

HHI estimate

n/a

Pricing power

Moderate

Weak

Moat score

63 / 100

77 / 100

Moat domains

Demand

Supply, Demand, Network, Financial

Last update

2026-01-06

2025-12-30

Moat coverage

Shared moat types

No overlap yet.

Judges Scientific plc strengths

Brand TrustSwitching Costs GeneralBuy-and-build acquisition engine

Walmart Inc. strengths

Scale Economies Unit CostPhysical Network DensityHabit DefaultSupply Chain ControlEcosystem ComplementsFloat Prepayment

Segment mix

Judges Scientific plc segments

Full profile >

Materials Sciences

Competitive

48.4%

Vacuum

Competitive

51.7%

Walmart Inc. segments

Full profile >

Walmart U.S.

Competitive

68.3%

Walmart International

Competitive

18.1%

Sam's Club U.S.

Oligopoly

13.6%

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

Looking for expansion-stage stocks?

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

View expansion-stage stocks

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.