VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Thursday, January 1, 2026

Stock Comparison

Automatic Data Processing, Inc. vs W.W. Grainger, Inc.

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

Automatic Data Processing, Inc.

ADP · NASDAQ

Market cap (USD)$105B
SectorTechnology
CountryUS
Data as of2025-12-30
Moat score
71/ 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 Automatic Data Processing, Inc.'s moat claims, evidence, and risks.

View ADP analysis

W.W. Grainger, Inc.

GWW · New York Stock Exchange

Market cap (USD)
SectorIndustrials
CountryUS
Data as of2026-01-01
Moat score
65/ 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 W.W. Grainger, Inc.'s moat claims, evidence, and risks.

View GWW analysis

Comparison highlights

  • Moat score gap: Automatic Data Processing, Inc. leads (71 / 100 vs 65 / 100 for W.W. Grainger, Inc.).
  • Segment focus: Automatic Data Processing, Inc. has 2 segments (67.5% in Employer Services); W.W. Grainger, Inc. has 3 segments (79.9% in High-Touch Solutions N.A.).
  • Primary market structure: Oligopoly vs Competitive. Pricing power: Moderate vs Moderate.
  • Moat breadth: Automatic Data Processing, Inc. has 7 moat types across 4 domains; W.W. Grainger, Inc. has 5 across 2.

Primary market context

Automatic Data Processing, Inc.

Employer Services

Market

Payroll processing and cloud HCM (HR, time, talent, tax, benefits) software and outsourcing

Geography

Global

Customer

Businesses (SMB to large enterprise)

Role

SaaS and managed services provider

Revenue share

67.5%

W.W. Grainger, Inc.

High-Touch Solutions N.A.

Market

MRO (maintenance, repair and operations) products distribution and value-added inventory/procurement solutions

Geography

North America (U.S., Canada, Mexico, Puerto Rico)

Customer

Mid-size and large businesses with complex purchasing operations; also government and institutions

Role

Distributor / wholesaler + onsite inventory services

Revenue share

79.9%

Side-by-side metrics

Automatic Data Processing, Inc.
W.W. Grainger, Inc.
Ticker / Exchange
ADP - NASDAQ
GWW - New York Stock Exchange
Market cap (USD)
$105B
n/a
Sector
Technology
Industrials
HQ country
US
US
Primary segment
Employer Services
High-Touch Solutions N.A.
Market structure
Oligopoly
Competitive
Market share
16.7% (reported)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
71 / 100
65 / 100
Moat domains
Demand, Legal, Supply, Financial
Supply, Demand
Last update
2025-12-30
2026-01-01

Moat coverage

Shared moat types

Scale Economies Unit Cost

Automatic Data Processing, Inc. strengths

Switching Costs GeneralCompliance AdvantageFloat PrepaymentRegulated Standards PipeSuite BundlingUnderwriting Risk Pooling

W.W. Grainger, Inc. strengths

Service Field NetworkData Workflow LockinScope EconomiesOperational Excellence

Segment mix

Automatic Data Processing, Inc. segments

Full profile >

Employer Services

Oligopoly

67.5%

Professional Employer Organization (PEO) Services

Competitive

32.5%

W.W. Grainger, Inc. segments

Full profile >

High-Touch Solutions N.A.

Competitive

79.9%

Endless Assortment

Competitive

18.3%

Other (Cromwell U.K. + captive insurance)

Competitive

1.8%

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

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.