VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

CoStar Group, Inc. vs CSX 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)$27.9B
Gross margin (TTM)79.3%
Operating margin (TTM)-2.7%
Net margin (TTM)0.7%
SectorReal Estate
IndustryReal Estate - Services
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

CSX Corporation

CSX · NASDAQ

Market cap (USD)$67.7B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorIndustrials
IndustryRailroads
CountryUS
Data as of2026-01-02
Moat score
74/ 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 CSX Corporation's moat claims, evidence, and risks.

View CSX analysis

Comparison highlights

  • Moat score gap: CoStar Group, Inc. leads (75 / 100 vs 74 / 100 for CSX Corporation).
  • Segment focus: CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)); CSX Corporation has 5 segments (61.2% in Merchandise (Rail)).
  • Primary market structure: Oligopoly vs Oligopoly. Pricing power: Strong vs Moderate.
  • Moat breadth: CoStar Group, Inc. has 9 moat types across 4 domains; CSX Corporation has 6 across 2.

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%

CSX Corporation

Merchandise (Rail)

Market

Eastern U.S. rail freight transportation (merchandise carload)

Geography

Eastern United States (CSX network; interchange to other railroads)

Customer

Industrial, agricultural, automotive and consumer goods shippers; logistics providers

Role

Common-carrier freight railroad (line-haul + switching/terminal)

Revenue share

61.2%

Side-by-side metrics

CoStar Group, Inc.
CSX Corporation
Ticker / Exchange
CSGP - NASDAQ
CSX - NASDAQ
Market cap (USD)
$27.9B
$67.7B
Gross margin (TTM)
79.3%
n/a
Operating margin (TTM)
-2.7%
n/a
Net margin (TTM)
0.7%
n/a
Sector
Real Estate
Industrials
Industry
Real Estate - Services
Railroads
HQ country
US
US
Primary segment
Multifamily (Apartments.com Network)
Merchandise (Rail)
Market structure
Oligopoly
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Strong
Moderate
Moat score
75 / 100
74 / 100
Moat domains
Supply, Network, Demand, Legal
Supply, Legal
Last update
2025-12-29
2026-01-02

Moat coverage

Shared moat types

Capex Knowhow Scale

CoStar Group, Inc. strengths

Data Network EffectsData Workflow LockinDe Facto StandardIP Choke PointTwo Sided NetworkBrand TrustSuite BundlingEcosystem Complements

CSX Corporation strengths

Physical Network DensityPermits Rights Of WayOperational ExcellenceGeographic NaturalScale Economies Unit Cost

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%

CSX Corporation segments

Full profile >

Merchandise (Rail)

Oligopoly

61.2%

Intermodal (Rail)

Competitive

14.1%

Coal (Rail)

Oligopoly

15.5%

Trucking (Quality Carriers)

Competitive

5.8%

Other Revenue (Rail/Ancillary)

Competitive

3.4%

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.