VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

NO ADVICE

Friday, January 2, 2026

Stock Comparison

IDEX Corporation vs Martin Marietta Materials, Inc.

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

IDEX Corporation

IEX · New York Stock Exchange

Market cap (USD)$13.5B
Gross margin (TTM)43.5%
Operating margin (TTM)20.7%
Net margin (TTM)14%
SectorIndustrials
IndustryIndustrial - Machinery
CountryUS
Data as of2025-12-23
Moat score
58/ 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 IDEX Corporation's moat claims, evidence, and risks.

View IEX analysis

Martin Marietta Materials, Inc.

MLM · NYSE

Market cap (USD)$37.9B
Gross margin (TTM)
Operating margin (TTM)
Net margin (TTM)
SectorMaterials
IndustryConstruction Materials
CountryUS
Data as of2026-01-01
Moat score
78/ 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 Martin Marietta Materials, Inc.'s moat claims, evidence, and risks.

View MLM analysis

Comparison highlights

  • Moat score gap: Martin Marietta Materials, Inc. leads (78 / 100 vs 58 / 100 for IDEX Corporation).
  • Segment focus: IDEX Corporation has 3 segments (39.6% in Health & Science Technologies (HST)); Martin Marietta Materials, Inc. has 3 segments (52.4% in East Group).
  • Primary market structure: Competitive vs Oligopoly. Pricing power: Moderate vs Strong.
  • Moat breadth: IDEX Corporation has 7 moat types across 3 domains; Martin Marietta Materials, Inc. has 4 across 2.

Primary market context

IDEX Corporation

Health & Science Technologies (HST)

Market

Precision fluidics, optics/photonics, microfluidics, sealing solutions, pneumatic components, and process technologies for life science/diagnostics, semiconductor, aerospace/defense, and industrial markets

Geography

Global

Customer

Life science & diagnostic instrument OEMs, semiconductor/industrial OEMs, specialty industrial customers

Role

Component/subsystem supplier and specialty equipment provider

Revenue share

39.6%

Martin Marietta Materials, Inc.

East Group

Market

Construction aggregates and asphalt products (crushed stone, sand & gravel; asphalt) in local/regional markets

Geography

United States (East/Southeast and adjacent regions)

Customer

Infrastructure agencies, construction contractors, and downstream materials producers (asphalt/ready-mix)

Role

Quarry/mining operator and building materials producer/distributor

Revenue share

52.4%

Side-by-side metrics

IDEX Corporation
Martin Marietta Materials, Inc.
Ticker / Exchange
IEX - New York Stock Exchange
MLM - NYSE
Market cap (USD)
$13.5B
$37.9B
Gross margin (TTM)
43.5%
n/a
Operating margin (TTM)
20.7%
n/a
Net margin (TTM)
14%
n/a
Sector
Industrials
Materials
Industry
Industrial - Machinery
Construction Materials
HQ country
US
US
Primary segment
Health & Science Technologies (HST)
East Group
Market structure
Competitive
Oligopoly
Market share
n/a
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Strong
Moat score
58 / 100
78 / 100
Moat domains
Demand, Supply, Legal
Supply, Financial
Last update
2025-12-23
2026-01-01

Moat coverage

Shared moat types

No overlap yet.

IDEX Corporation strengths

Design In QualificationData Workflow LockinInstalled Base ConsumablesLearning Curve YieldIP Choke PointBrand TrustProcurement Inertia

Martin Marietta Materials, Inc. strengths

Physical Network DensityGeographic NaturalBenchmark Pricing PowerCapex Knowhow Scale

Segment mix

IDEX Corporation segments

Full profile >

Fluid & Metering Technologies (FMT)

Competitive

37.7%

Health & Science Technologies (HST)

Competitive

39.6%

Fire & Safety/Diversified Products (FSDP)

Competitive

22.7%

Martin Marietta Materials, Inc. segments

Full profile >

East Group

Oligopoly

52.4%

West Group

Oligopoly

40.9%

Specialties (formerly Magnesia Specialties)

Oligopoly

6.7%

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.