VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

CoStar Group, Inc. vs HEICO Corporation

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

HEICO Corporation

HEI · NYSE

Market cap (USD)$39.6B
SectorIndustrials
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

Comparison highlights

  • Moat score gap: HEICO Corporation leads (77 / 100 vs 75 / 100 for CoStar Group, Inc.).
  • Segment focus: CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)); HEICO Corporation has 2 segments (69.5% in Flight Support Group (FSG)).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Strong vs Moderate.
  • Moat breadth: CoStar Group, Inc. has 9 moat types across 4 domains; HEICO Corporation 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%

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%

Side-by-side metrics

CoStar Group, Inc.
HEICO Corporation
Ticker / Exchange
CSGP - NASDAQ
HEI - NYSE
Market cap (USD)
$28.6B
$39.6B
Sector
Real Estate
Industrials
HQ country
US
US
Primary segment
Multifamily (Apartments.com Network)
Flight Support Group (FSG)
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Strong
Moderate
Moat score
75 / 100
77 / 100
Moat domains
Supply, Network, Demand, Legal
Legal, Supply, Demand
Last update
2025-12-29
2025-12-30

Moat coverage

Shared moat types

IP Choke PointBrand Trust

CoStar Group, Inc. strengths

Capex Knowhow ScaleData Network EffectsData Workflow LockinDe Facto StandardTwo Sided NetworkSuite BundlingEcosystem Complements

HEICO Corporation strengths

Regulated Standards PipeLearning Curve YieldDesign In QualificationGovernment Contracting Relationships

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%

HEICO Corporation segments

Full profile >

Flight Support Group (FSG)

Oligopoly

69.5%

Electronic Technologies Group (ETG)

Oligopoly

30.5%

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

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.