VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Thursday, January 1, 2026
Stock Comparison
CoStar Group, Inc. vs W.W. Grainger, 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 analysisW.W. Grainger, Inc.
GWW · New York 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 W.W. Grainger, Inc.'s moat claims, evidence, and risks.
View GWW analysisComparison highlights
- Moat score gap: CoStar Group, Inc. leads (75 / 100 vs 65 / 100 for W.W. Grainger, Inc.).
- Segment focus: CoStar Group, Inc. has 6 segments (39% in Multifamily (Apartments.com Network)); W.W. Grainger, Inc. has 3 segments (79.9% in High-Touch Solutions N.A.).
- Primary market structure: Oligopoly vs Competitive. Pricing power: Strong vs Moderate.
- Moat breadth: CoStar Group, Inc. has 9 moat types across 4 domains; W.W. Grainger, Inc. has 5 across 2.
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%
W.W. Grainger, Inc.
High-Touch Solutions N.A.
MRO (maintenance, repair and operations) products distribution and value-added inventory/procurement solutions
North America (U.S., Canada, Mexico, Puerto Rico)
Mid-size and large businesses with complex purchasing operations; also government and institutions
Distributor / wholesaler + onsite inventory services
79.9%
Side-by-side metrics
Moat coverage
Shared moat types
CoStar Group, Inc. strengths
W.W. Grainger, 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
W.W. Grainger, Inc. segments
Full profile >High-Touch Solutions N.A.
Competitive
Endless Assortment
Competitive
Other (Cromwell U.K. + captive insurance)
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.