VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Tuesday, December 30, 2025

Stock Comparison

CoStar Group, Inc. vs Intertek Group plc

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

CoStar Group, Inc.

CSGP · NASDAQ

Market cap (USD)$28.6B
SectorReal Estate
CountryUS
Data as of2025-12-29
Moat score
75/ 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 CoStar Group, Inc.'s moat claims, evidence, and risks.

View CSGP analysis

Intertek Group plc

ITRK · London Stock Exchange

Market cap (USD)
SectorIndustrials
CountryGB
Data as of2025-12-28
Moat score
64/ 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 Intertek Group plc's moat claims, evidence, and risks.

View ITRK analysis

Comparison highlights

  • Moat score gap: CoStar Group, Inc. leads (75 / 100 vs 64 / 100 for Intertek Group plc).
  • Segment focus: CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)); Intertek Group plc has 5 segments (28.3% in Consumer Products).
  • Moat breadth: CoStar Group, Inc. has 9 moat types across 4 domains; Intertek Group plc has 6 across 3.

Primary market context

CoStar Group, Inc.

Multifamily (Apartments.com Network)

Market

Online multifamily rental marketplaces and advertising

Geography

United States

Customer

Two-sided (renters + property managers/owners)

Role

Marketplace (subscription advertising + workflow tools)

Revenue share

39%

Intertek Group plc

Consumer Products

Market

Consumer products testing, inspection and certification (TIC/ATIC) services

Geography

Global

Customer

Brands, retailers, manufacturers

Role

Third-party conformity assessment and supply chain QA

Revenue share

28.3%

Side-by-side metrics

CoStar Group, Inc.
Intertek Group plc
Ticker / Exchange
CSGP - NASDAQ
ITRK - London Stock Exchange
Market cap (USD)
$28.6B
n/a
Sector
Real Estate
Industrials
HQ country
US
GB
Primary segment
Multifamily (Apartments.com Network)
Consumer Products
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Strong
Strong
Moat score
75 / 100
64 / 100
Moat domains
Supply, Network, Demand, Legal
Supply, Demand, Legal
Last update
2025-12-29
2025-12-28

Moat coverage

Shared moat types

Data Workflow LockinBrand TrustSuite Bundling

CoStar Group, Inc. strengths

Capex Knowhow ScaleData Network EffectsDe Facto StandardIP Choke PointTwo Sided NetworkEcosystem Complements

Intertek Group plc strengths

Service Field NetworkCompliance AdvantageDesign In Qualification

Segment mix

CoStar Group, Inc. segments

Full profile >

CoStar (commercial real estate info & analytics)

Oligopoly

37.3%

Information Services (lease management software + international info)

Competitive

5%

Multifamily (Apartments.com Network)

Oligopoly

39%

LoopNet (commercial property marketing marketplace)

Oligopoly

10.3%

Residential (Homes.com + OnTheMarket)

Oligopoly

3.7%

Other Marketplaces (Ten-X, Land.com, BizBuySell, etc.)

Competitive

4.8%

Intertek Group plc segments

Full profile >

Consumer Products

Oligopoly

28.3%

Corporate Assurance

Competitive

14.6%

Health and Safety

Competitive

9.9%

Industry and Infrastructure

Competitive

24.9%

World of Energy

Oligopoly

22.3%

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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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.