WIDE MOAT STOCKS COMPARISON

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Stock Comparison

Amazon.com, Inc. vs Walmart Inc.

Compare moat strength, market structure, and segment coverage to understand how each company defends its edge.

Amazon.com, Inc.

AMZN · NASDAQ

Market cap (USD)$2.8T
Gross margin (TTM)50.8%
Operating margin (TTM)12.1%
Net margin (TTM)17.4%
SectorConsumer
IndustrySpecialty retail
CountryUS
Data as of2026-08-23
89/100
Moat score

Weighted across the company's segments.

Full stock profile

Dive deeper into Amazon.com, Inc.'s moat claims, evidence, and risks.

View AMZN analysis

Walmart Inc.

WMT · New York Stock Exchange

Market cap (USD)$852.6B
Gross margin (TTM)25.2%
Operating margin (TTM)4.4%
Net margin (TTM)3%
SectorConsumer
IndustryDiscount and grocery retail
CountryUS
Data as of2026-08-23
81/100
Moat score

Weighted across the company's segments.

Full stock profile

Dive deeper into Walmart Inc.'s moat claims, evidence, and risks.

View WMT analysis

Comparison highlights

  • Moat score gap: Amazon.com, Inc. leads (89 / 100 vs 81 / 100 for Walmart Inc.).
  • Segment focus: Amazon.com, Inc. has 4 segments (68.2% in Amazon Stores (Retail, Marketplace and Prime)); Walmart Inc. has 3 segments (67.3% in Walmart U.S.).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Weak.
  • Moat breadth: Amazon.com, Inc. has 6 moat types across 3 domains; Walmart Inc. has 3 across 2.

Primary market context

Amazon.com, Inc.

Amazon Stores (Retail, Marketplace and Prime)

Market

Online and physical retail, third-party marketplace, fulfillment and membership commerce

Geography

Global

Customer

Consumers and third-party merchants

Role

Marketplace operator, retailer, membership provider and fulfillment network

Revenue share

68.2%

Walmart Inc.

Walmart U.S.

Market

U.S. omnichannel discount retail and grocery (supercenters, neighborhood markets, eCommerce)

Geography

United States

Customer

Consumers and small businesses; marketplace sellers and advertisers (for marketplace and retail media offerings)

Role

Retailer / marketplace operator / last-mile fulfillment network

Revenue share

67.3%

Side-by-side metrics

Amazon.com, Inc.
Walmart Inc.
Ticker / Exchange
AMZN - NASDAQ
WMT - New York Stock Exchange
Market cap (USD)
$2.8T
$852.6B
Gross margin (TTM)
50.8%
25.2%
Operating margin (TTM)
12.1%
4.4%
Net margin (TTM)
17.4%
3%
Sector
Consumer
Consumer
Industry
Specialty retail
Discount and grocery retail
HQ country
US
US
Primary segment
Amazon Stores (Retail, Marketplace and Prime)
Walmart U.S.
Market structure
Oligopoly
Competitive
Market share
n/a
20%-22% (reported)
HHI estimate
n/a
n/a
Pricing power
Moderate
Weak
Moat score
89 / 100
81 / 100
Moat domains
Supply, Demand, Network
Supply, Financial
Last update
2026-09-05
2026-09-05

Moat coverage

Shared moat types

Physical Network Density

Amazon.com, Inc. strengths

Capex Knowhow ScaleLong Term ContractsTwo Sided NetworkSuite BundlingDistribution Control

Walmart Inc. strengths

Scale Economies Unit CostFloat Prepayment

Segment mix

Amazon.com, Inc. segments

Full profile >

Amazon Web Services (AWS)

Oligopoly

21.1%

Amazon Stores (Retail, Marketplace and Prime)

Oligopoly

68.2%

Advertising Services (Amazon Ads and Retail Media)

Oligopoly

9.9%

Other Services and Adjacencies

Competitive

0.9%

Walmart Inc. segments

Full profile >

Walmart U.S.

Competitive

67.3%

Walmart International

Competitive

18.9%

Sam's Club U.S.

Oligopoly

13.8%

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Curation & 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.