VOL. XCIV, NO. 247
★ WIDE MOAT STOCKS COMPARISON ★
NO ADVICE
Wednesday, December 31, 2025
Stock Comparison
Canadian National Railway Company vs Merck & Co., Inc.
Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.
Canadian National Railway Company
CNR · Toronto 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 Canadian National Railway Company's moat claims, evidence, and risks.
View CNR analysisMerck & Co., Inc.
MRK · 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 Merck & Co., Inc.'s moat claims, evidence, and risks.
View MRK analysisComparison highlights
- Moat score gap: Canadian National Railway Company leads (97 / 100 vs 71 / 100 for Merck & Co., Inc.).
- Segment focus: Canadian National Railway Company has 2 segments (96.2% in Rail freight transportation network); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
- Primary market structure: Duopoly vs Competitive. Pricing power: Moderate vs Moderate.
- Moat breadth: Canadian National Railway Company has 4 moat types across 2 domains; Merck & Co., Inc. has 5 across 3.
Primary market context
Canadian National Railway Company
Rail freight transportation network
Canadian Class I freight rail transportation
Canada (with U.S. cross-border corridors)
Industrial shippers, intermodal customers, and auto supply chains
Line-haul freight railway (Class I)
96.2%
Merck & Co., Inc.
Pharmaceutical
Branded prescription pharmaceuticals & human vaccines
Global
Wholesalers/retailers, managed care and government payers, hospitals/clinics
R&D-intensive innovator, manufacturer, and marketer
89.5%
Side-by-side metrics
Moat coverage
Shared moat types
Canadian National Railway Company strengths
Merck & Co., Inc. strengths
Segment mix
Canadian National Railway Company segments
Full profile >Rail freight transportation network
Duopoly
Non-rail logistics and ancillary services
Competitive
Merck & Co., Inc. segments
Full profile >Pharmaceutical
Competitive
Animal Health
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.