VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Wednesday, December 31, 2025

Stock Comparison

CoStar Group, Inc. vs Philip Morris International Inc.

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

Philip Morris International Inc.

PM · New York Stock Exchange

Market cap (USD)
SectorConsumer
CountryUS
Data as of2025-12-31
Moat score
84/ 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 Philip Morris International Inc.'s moat claims, evidence, and risks.

View PM analysis

Comparison highlights

  • Moat score gap: Philip Morris International Inc. leads (84 / 100 vs 75 / 100 for CoStar Group, Inc.).
  • Segment focus: CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)); Philip Morris International Inc. has 3 segments (61.3% in Combustible Tobacco).
  • Moat breadth: CoStar Group, Inc. has 9 moat types across 4 domains; Philip Morris International Inc. 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%

Philip Morris International Inc.

Combustible Tobacco

Market

International combustible tobacco (primarily cigarettes)

Geography

Global (primarily ex-U.S.)

Customer

Adult smokers; distributors/wholesalers and retail channels

Role

Branded manufacturer and distributor

Revenue share

61.3%

Side-by-side metrics

CoStar Group, Inc.
Philip Morris International Inc.
Ticker / Exchange
CSGP - NASDAQ
PM - New York Stock Exchange
Market cap (USD)
$28.6B
n/a
Sector
Real Estate
Consumer
HQ country
US
US
Primary segment
Multifamily (Apartments.com Network)
Combustible Tobacco
Market structure
Oligopoly
Oligopoly
Market share
n/a
25.3% (reported)
HHI estimate
n/a
n/a
Pricing power
Strong
Strong
Moat score
75 / 100
84 / 100
Moat domains
Supply, Network, Demand, Legal
Demand, Supply, Legal
Last update
2025-12-29
2025-12-31

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

Philip Morris International Inc. strengths

Distribution ControlCompliance AdvantageInstalled Base ConsumablesRegulated Standards Pipe

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%

Philip Morris International Inc. segments

Full profile >

Combustible Tobacco

Oligopoly

61.3%

Smoke-Free Products

Oligopoly

37.8%

Wellness & Healthcare

Competitive

0.9%

Want the full wide moat stocks list?

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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.