VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, January 7, 2026
Stock Comparison
American Tower Corporation vs Duolingo, Inc.
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 analysisDuolingo, Inc.
DUOL · 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 Duolingo, Inc.'s moat claims, evidence, and risks.
View DUOL analysisComparison highlights
- Moat score gap: American Tower Corporation leads (76 / 100 vs 68 / 100 for Duolingo, Inc.).
- Segment focus: American Tower Corporation has 3 segments; Duolingo, Inc. has 2 segments (93.9% in Duolingo App).
- Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
- Moat breadth: American Tower Corporation has 6 moat types across 4 domains; Duolingo, Inc. 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)
Duolingo, Inc.
Duolingo App
Mobile-first, freemium language learning and adjacent subjects (math, music)
Global
Consumers (end-users); advertisers
Digital learning platform / content & software publisher
93.9%
Side-by-side metrics
Moat coverage
Shared moat types
No overlap yet.
American Tower Corporation strengths
Duolingo, Inc. strengths
Segment mix
American Tower Corporation segments
Full profile >U.S. & Canada Communications Sites
Oligopoly
International Communications Sites
Oligopoly
Data Centers
Competitive
Duolingo, Inc. segments
Full profile >Duolingo App
Competitive
Duolingo English Test
Oligopoly
Want the full wide moat stocks list?
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View the moat stocks listLooking for expansion-stage stocks?
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.