VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

Fastenal Company vs W.W. Grainger, Inc.

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

Fastenal Company

FAST · Nasdaq Stock Market

Market cap (USD)
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorIndustrials
CountryUS
Data as of2026-01-01
Moat score
60/ 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 Fastenal Company's moat claims, evidence, and risks.

View FAST analysis

W.W. Grainger, Inc.

GWW · New York Stock Exchange

Market cap (USD)
Gross margin (TTM)39.1%
Operating margin (TTM)14.1%
Net margin (TTM)9.8%
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: W.W. Grainger, Inc. leads (65 / 100 vs 60 / 100 for Fastenal Company).
  • Segment focus: Fastenal Company has 3 segments (54.5% in Branch-based distribution (in-market branches)); W.W. Grainger, Inc. has 3 segments (79.9% in High-Touch Solutions N.A.).
  • Primary market structure: Competitive vs Competitive. Pricing power: Weak vs Moderate.
  • Moat breadth: Fastenal Company has 5 moat types across 2 domains; W.W. Grainger, Inc. has 5 across 2.

Primary market context

Fastenal Company

Branch-based distribution (in-market branches)

Market

Industrial & construction supplies distribution (MRO/OEM consumables) via local branches

Geography

North America (primary) + select international

Customer

B2B

Role

Distributor / MRO supplier

Revenue share

54.5%

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

Fastenal Company
W.W. Grainger, Inc.
Ticker / Exchange
FAST - Nasdaq Stock Market
GWW - New York Stock Exchange
Market cap (USD)
n/a
n/a
Gross margin (TTM)
n/a
39.1%
Operating margin (TTM)
n/a
14.1%
Net margin (TTM)
n/a
9.8%
Sector
Industrials
Industrials
HQ country
US
US
Primary segment
Branch-based distribution (in-market branches)
High-Touch Solutions N.A.
Market structure
Competitive
Competitive
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Weak
Moderate
Moat score
60 / 100
65 / 100
Moat domains
Supply, Demand
Supply, Demand
Last update
2026-01-01
2026-01-01

Moat coverage

Shared moat types

Operational ExcellenceData Workflow LockinScope Economies

Fastenal Company strengths

Physical Network DensitySwitching Costs General

W.W. Grainger, Inc. strengths

Service Field NetworkScale Economies Unit Cost

Segment mix

Fastenal Company segments

Full profile >

Branch-based distribution (in-market branches)

Competitive

54.5%

Onsite solutions (embedded customer locations)

Competitive

42.4%

Other / non-traditional sales (services & custom manufacturing)

Competitive

3.1%

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.

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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.