VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 1, 2026

Stock Comparison

CoStar Group, Inc. vs United Rentals, 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

United Rentals, Inc.

URI · New York Stock Exchange

Market cap (USD)$51.5B
SectorIndustrials
CountryUS
Data as of2026-01-01
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 United Rentals, Inc.'s moat claims, evidence, and risks.

View URI analysis

Comparison highlights

  • Moat score gap: CoStar Group, Inc. leads (75 / 100 vs 63 / 100 for United Rentals, Inc.).
  • Segment focus: CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)); United Rentals, Inc. has 2 segments (70.7% in General Rentals).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Strong vs Moderate.
  • Moat breadth: CoStar Group, Inc. has 9 moat types across 4 domains; United Rentals, Inc. has 9 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%

United Rentals, Inc.

General Rentals

Market

Construction & industrial equipment rental (general line)

Geography

United States and Canada

Customer

Construction and industrial companies, manufacturers, utilities, municipalities, homeowners

Role

Equipment rental provider / fleet operator

Revenue share

70.7%

Side-by-side metrics

CoStar Group, Inc.
United Rentals, Inc.
Ticker / Exchange
CSGP - NASDAQ
URI - New York Stock Exchange
Market cap (USD)
$28.6B
$51.5B
Sector
Real Estate
Industrials
HQ country
US
US
Primary segment
Multifamily (Apartments.com Network)
General Rentals
Market structure
Oligopoly
Competitive
Market share
n/a
9.5%-11% (implied)
HHI estimate
n/a
n/a
Pricing power
Strong
Moderate
Moat score
75 / 100
63 / 100
Moat domains
Supply, Network, Demand, Legal
Supply, Demand, Legal
Last update
2025-12-29
2026-01-01

Moat coverage

Shared moat types

Data Workflow LockinBrand Trust

CoStar Group, Inc. strengths

Capex Knowhow ScaleData Network EffectsDe Facto StandardIP Choke PointTwo Sided NetworkSuite BundlingEcosystem Complements

United Rentals, Inc. strengths

Physical Network DensityPreferential Input AccessOperational ExcellenceService Field NetworkCompliance AdvantageScope EconomiesCapacity Moat

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%

United Rentals, Inc. segments

Full profile >

General Rentals

Competitive

70.7%

Specialty

Competitive

29.3%

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.