VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Tuesday, December 30, 2025

Stock Comparison

Apple Inc. vs CoStar Group, Inc.

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

Apple Inc.

AAPL · NASDAQ

Market cap (USD)$3T
SectorTechnology
CountryUS
Data as of2025-12-20
Moat score
87/ 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 Apple Inc.'s moat claims, evidence, and risks.

View AAPL analysis

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

Comparison highlights

  • Moat score gap: Apple Inc. leads (87 / 100 vs 75 / 100 for CoStar Group, Inc.).
  • Segment focus: Apple Inc. has 5 segments (50.4% in iPhone); CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)).
  • Moat breadth: Apple Inc. has 7 moat types across 3 domains; CoStar Group, Inc. has 9 across 4.

Primary market context

Apple Inc.

iPhone

Market

Smartphones (with focus on premium smartphones and iOS ecosystem devices)

Geography

Global

Customer

Consumers and enterprises (end-users), plus carrier/retail channels

Role

OEM / platform owner

Revenue share

50.4%

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%

Side-by-side metrics

Apple Inc.
CoStar Group, Inc.
Ticker / Exchange
AAPL - NASDAQ
CSGP - NASDAQ
Market cap (USD)
$3T
$28.6B
Sector
Technology
Real Estate
HQ country
US
US
Primary segment
iPhone
Multifamily (Apartments.com Network)
Market structure
Oligopoly
Oligopoly
Market share
14%-17% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Strong
Strong
Moat score
87 / 100
75 / 100
Moat domains
Demand, Network, Supply
Supply, Network, Demand, Legal
Last update
2025-12-20
2025-12-29

Moat coverage

Shared moat types

Brand TrustEcosystem ComplementsTwo Sided Network

Apple Inc. strengths

Scale Economies Unit CostSwitching Costs GeneralDefault OS GatewayInstalled Base Consumables

CoStar Group, Inc. strengths

Capex Knowhow ScaleData Network EffectsData Workflow LockinDe Facto StandardIP Choke PointSuite Bundling

Segment mix

Apple Inc. segments

Full profile >

iPhone

Oligopoly

50.4%

Mac

Oligopoly

8.1%

iPad

Oligopoly

6.7%

Wearables, Home and Accessories

Competitive

8.6%

Services

Quasi-Monopoly

26.2%

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%

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.