VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Friday, January 9, 2026

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Stock Comparison

Alphabet Inc. vs Judges Scientific plc

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

Alphabet Inc.

GOOGL · The Nasdaq Stock Market

Market cap (USD)$3.8T

Gross margin (TTM)59.2%

Operating margin (TTM)32.2%

Net margin (TTM)32.2%

SectorCommunication Services

IndustryInternet Content & Information

CountryUS

Data as of2025-12-21

Moat score

86/ 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 Alphabet Inc.'s moat claims, evidence, and risks.

View GOOGL 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: Alphabet Inc. leads (86 / 100 vs 63 / 100 for Judges Scientific plc).
Segment focus: Alphabet Inc. has 6 segments (56.6% in Google Search & other (Advertising)); Judges Scientific plc has 2 segments (51.7% in Vacuum).
Primary market structure: Quasi-Monopoly vs Competitive. Pricing power: Strong vs Moderate.
Moat breadth: Alphabet Inc. has 10 moat types across 4 domains; Judges Scientific plc has 3 across 1.

Primary market context

Alphabet Inc.

Google Search & other (Advertising)

Market

Search advertising (intent-based digital ads)

Geography

Global

Customer

Advertisers (SMB to enterprise)

Role

Ad platform / publisher

Revenue share

56.6%

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

Alphabet Inc.

Judges Scientific plc

Ticker / Exchange

GOOGL - The Nasdaq Stock Market

JDG - London Stock Exchange - AIM

Market cap (USD)

$3.8T

n/a

Gross margin (TTM)

59.2%

n/a

Operating margin (TTM)

32.2%

n/a

Net margin (TTM)

32.2%

n/a

Sector

Communication Services

Technology

Industry

Internet Content & Information

n/a

HQ country

Primary segment

Google Search & other (Advertising)

Vacuum

Market structure

Quasi-Monopoly

Competitive

Market share

88%-91% (reported)

n/a

HHI estimate

8,115

n/a

Pricing power

Strong

Moderate

Moat score

86 / 100

63 / 100

Moat domains

Network, Demand, Legal, Supply

Demand

Last update

2025-12-21

2026-01-06

Moat coverage

Shared moat types

Switching Costs General

Alphabet Inc. strengths

Data Network EffectsHabit DefaultTwo Sided NetworkContent Rights CurrencyOperational ExcellenceDefault OS GatewayCapex Knowhow ScaleEcosystem ComplementsIncubation & patient capital

Judges Scientific plc strengths

Brand TrustBuy-and-build acquisition engine

Segment mix

Alphabet Inc. segments

Full profile >

Google Search & other (Advertising)

Quasi-Monopoly

56.6%

YouTube (Advertising)

Oligopoly

10.3%

Google Network (Advertising)

Competitive

8.7%

Google Subscriptions, Platforms & Devices

Quasi-Monopoly

11.5%

Google Cloud

Oligopoly

12.4%

Other Bets

Competitive

0.5%

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.

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.