VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 8, 2026

Stock Comparison

Amazon.com, Inc. vs Paychex, 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)$2.5T
Gross margin (TTM)50.1%
Operating margin (TTM)11%
Net margin (TTM)11.1%
SectorConsumer
IndustrySpecialty Retail
CountryUS
Data as of2025-12-29
Moat score
87/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

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

View AMZN analysis

Paychex, Inc.

PAYX · NASDAQ Global Select Market

Market cap (USD)$39.4B
Gross margin (TTM)73.4%
Operating margin (TTM)37.1%
Net margin (TTM)26.5%
SectorIndustrials
IndustryStaffing & Employment Services
CountryUS
Data as of2026-01-04
Moat score
66/ 100

Weighted average of segment moat scores, combining moat strength, durability, confidence, market structure, pricing power, and market share.

Full stock profile

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

View PAYX analysis

Comparison highlights

  • Moat score gap: Amazon.com, Inc. leads (87 / 100 vs 66 / 100 for Paychex, Inc.).
  • Segment focus: Amazon.com, Inc. has 4 segments (73.5% in Amazon Stores (Retail, Marketplace, Prime Subscriptions)); Paychex, Inc. has 3 segments (73% in Management Solutions).
  • Moat breadth: Amazon.com, Inc. has 10 moat types across 4 domains; Paychex, Inc. has 7 across 4.

Primary market context

Amazon.com, Inc.

Amazon Stores (Retail, Marketplace, Prime Subscriptions)

Market

US retail ecommerce marketplace and online retail (integrated fulfillment + membership shipping)

Geography

United States

Customer

Consumers and third-party merchants

Role

Marketplace operator, retailer, and fulfillment provider

Revenue share

73.5%

Paychex, Inc.

Management Solutions

Market

Payroll processing and integrated HCM solutions for SMB and mid-market employers

Geography

United States (primarily)

Customer

Employers (SMB and mid-market)

Role

HCM SaaS + outsourced payroll/HR service provider

Revenue share

73%

Side-by-side metrics

Amazon.com, Inc.
Paychex, Inc.
Ticker / Exchange
AMZN - NASDAQ
PAYX - NASDAQ Global Select Market
Market cap (USD)
$2.5T
$39.4B
Gross margin (TTM)
50.1%
73.4%
Operating margin (TTM)
11%
37.1%
Net margin (TTM)
11.1%
26.5%
Sector
Consumer
Industrials
Industry
Specialty Retail
Staffing & Employment Services
HQ country
US
US
Primary segment
Amazon Stores (Retail, Marketplace, Prime Subscriptions)
Management Solutions
Market structure
Oligopoly
Oligopoly
Market share
39%-42% (estimated)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
87 / 100
66 / 100
Moat domains
Supply, Demand, Network, Financial
Demand, Supply, Legal, Financial
Last update
2025-12-29
2026-01-04

Moat coverage

Shared moat types

Suite Bundling

Amazon.com, Inc. strengths

Capex Knowhow ScaleScope EconomiesLong Term ContractsTwo Sided NetworkPhysical Network DensityHabit DefaultNegative Working CapitalDistribution ControlData Network Effects

Paychex, Inc. strengths

Data Workflow LockinService Field NetworkCompliance AdvantageUnderwriting Risk PoolingSwitching Costs GeneralFloat Prepayment

Segment mix

Amazon.com, Inc. segments

Full profile >

Amazon Web Services (AWS)

Oligopoly

16.9%

Amazon Stores (Retail, Marketplace, Prime Subscriptions)

Oligopoly

73.5%

Advertising Services (Amazon Ads / Retail Media)

Oligopoly

8.8%

Other (healthcare, content licensing/distribution, shipping services, co-branded credit card agreements, etc.)

Competitive

0.9%

Paychex, Inc. segments

Full profile >

Management Solutions

Oligopoly

73%

PEO and Insurance Solutions

Competitive

24.1%

Client funds float (interest on funds held for clients)

Oligopoly

2.9%

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 list

Looking for expansion-stage stocks?

Proven models entering the expansion stage with unit economics that work.

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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.