VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Sunday, January 11, 2026
Stock Comparison
Auto Trader Group plc vs CoStar Group, Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Auto Trader Group plc
AUTO · London Stock Exchange
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into Auto Trader Group plc's moat claims, evidence, and risks.
View AUTO analysisCoStar Group, Inc.
CSGP · NASDAQ
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 analysisComparison highlights
- Moat score gap: Auto Trader Group plc leads (96 / 100 vs 75 / 100 for CoStar Group, Inc.).
- Segment focus: Auto Trader Group plc has 2 segments (93.3% in Autotrader (UK automotive marketplace & data platform)); CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)).
- Primary market structure: Quasi-Monopoly vs Oligopoly. Pricing power: Strong vs Strong.
- Moat breadth: Auto Trader Group plc has 4 moat types across 2 domains; CoStar Group, Inc. has 9 across 4.
Primary market context
Auto Trader Group plc
Autotrader (UK automotive marketplace & data platform)
UK digital automotive marketplace (new & used) with retailer advertising/data products
United Kingdom
Consumers, vehicle retailers, OEMs/advertising agencies
Two-sided marketplace + advertising/data & workflow tools
93.3%
CoStar Group, Inc.
Multifamily (Apartments.com Network)
Online multifamily rental marketplaces and advertising
United States
Two-sided (renters + property managers/owners)
Marketplace (subscription advertising + workflow tools)
39%
Side-by-side metrics
Moat coverage
Shared moat types
Auto Trader Group plc strengths
CoStar Group, Inc. strengths
Segment mix
Auto Trader Group plc segments
Full profile >Autotrader (UK automotive marketplace & data platform)
Quasi-Monopoly
Autorama (vehicle leasing marketplace)
Competitive
CoStar Group, Inc. segments
Full profile >CoStar (commercial real estate info & analytics)
Oligopoly
Information Services (lease management software + international info)
Competitive
Multifamily (Apartments.com Network)
Oligopoly
LoopNet (commercial property marketing marketplace)
Oligopoly
Residential (Homes.com + OnTheMarket)
Oligopoly
Other Marketplaces (Ten-X, Land.com, BizBuySell, etc.)
Competitive
Want the full wide moat stocks list?
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Proven models entering the expansion stage with unit economics that work.
View expansion-stage stocksCuration & 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.