VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Tuesday, December 30, 2025
Stock Comparison
CoStar Group, Inc. vs Alphabet Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
CoStar 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 analysisAlphabet Inc.
GOOGL · The Nasdaq Stock Market
Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.
Full stock profile
Dive deeper into Alphabet Inc.'s moat claims, evidence, and risks.
View GOOGL analysisComparison highlights
- Moat score gap: Alphabet Inc. leads (86 / 100 vs 75 / 100 for CoStar Group, Inc.).
- Segment focus: CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)); Alphabet Inc. has 6 segments (56.6% in Google Search & other (Advertising)).
- Primary market structure: Oligopoly vs Quasi-Monopoly. Pricing power: Strong vs Strong.
- Moat breadth: CoStar Group, Inc. has 9 moat types across 4 domains; Alphabet Inc. has 10 across 4.
Primary market context
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%
Alphabet Inc.
Google Search & other (Advertising)
Search advertising (intent-based digital ads)
Global
Advertisers (SMB to enterprise)
Ad platform / publisher
56.6%
Side-by-side metrics
Moat coverage
Shared moat types
CoStar Group, Inc. strengths
Alphabet Inc. strengths
Segment mix
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
Alphabet Inc. segments
Full profile >Google Search & other (Advertising)
Quasi-Monopoly
YouTube (Advertising)
Oligopoly
Google Network (Advertising)
Competitive
Google Subscriptions, Platforms & Devices
Quasi-Monopoly
Google Cloud
Oligopoly
Other Bets
Competitive
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 listCuration & 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.