VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, December 31, 2025
Stock Comparison
American Tower Corporation vs Costco Wholesale Corporation
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
American Tower Corporation
AMT · 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 American Tower Corporation's moat claims, evidence, and risks.
View AMT analysisCostco Wholesale Corporation
COST · Nasdaq Global Select 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 Costco Wholesale Corporation's moat claims, evidence, and risks.
View COST analysisComparison highlights
- Moat score gap: Costco Wholesale Corporation leads (80 / 100 vs 76 / 100 for American Tower Corporation).
- Segment focus: American Tower Corporation has 3 segments; Costco Wholesale Corporation has 2 segments (98.1% in Warehouse club retail).
- Primary market structure: Oligopoly vs Oligopoly. Pricing power: Moderate vs Weak.
- Moat breadth: American Tower Corporation has 6 moat types across 4 domains; Costco Wholesale Corporation has 6 across 3.
Primary market context
American Tower Corporation
U.S. & Canada Communications Sites
Wireless communications site leasing (macro towers, rooftops and DAS)
United States and Canada
Wireless carriers and other tenants (broadcast, data, government/municipal)
Independent owner/operator of communications real estate (towerco)
Costco Wholesale Corporation
Warehouse club retail
Membership warehouse club retail (warehouse clubs, ancillary services, and e-commerce)
Global
Households and small businesses
Retailer (membership club)
98.1%
Side-by-side metrics
Moat coverage
Shared moat types
No overlap yet.
American Tower Corporation strengths
Costco Wholesale Corporation strengths
Segment mix
American Tower Corporation segments
Full profile >U.S. & Canada Communications Sites
Oligopoly
International Communications Sites
Oligopoly
Data Centers
Competitive
Costco Wholesale Corporation segments
Full profile >Warehouse club retail
Oligopoly
Membership fees (subscription)
Oligopoly
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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.