VOL. XCIV, NO. 247

★ WIDE MOAT STOCKS COMPARISON ★

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Stock Comparison

Doximity, Inc. vs Merck & Co., Inc.

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

Doximity, Inc.

DOCS · New York Stock Exchange

Market cap (USD)$4.5B
Gross margin (TTM)89.8%
Operating margin (TTM)37.4%
Net margin (TTM)37.5%
SectorHealthcare
IndustryMedical - Healthcare Information Services
CountryUS
Data as of2026-04-25
Moat score
70/ 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 Doximity, Inc.'s moat claims, evidence, and risks.

View DOCS analysis

Merck & Co., Inc.

MRK · New York Stock Exchange

Market cap (USD)$283.4B
Gross margin (TTM)81.5%
Operating margin (TTM)41.2%
Net margin (TTM)28.1%
SectorHealthcare
IndustryDrug Manufacturers - General
CountryUS
Data as of2025-12-22
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 Merck & Co., Inc.'s moat claims, evidence, and risks.

View MRK analysis

Comparison highlights

  • Moat score gap: Merck & Co., Inc. leads (71 / 100 vs 70 / 100 for Doximity, Inc.).
  • Segment focus: Doximity, Inc. has 1 segment (100% in Medical professional platform and healthcare customer solutions); Merck & Co., Inc. has 2 segments (89.5% in Pharmaceutical).
  • Moat breadth: Doximity, Inc. has 5 moat types across 2 domains; Merck & Co., Inc. has 5 across 3.

Primary market context

Doximity, Inc.

Medical professional platform and healthcare customer solutions

Market

U.S. digital medical professional network, HCP marketing, hiring, workflow and telehealth solutions

Geography

United States

Customer

Physicians, nurse practitioners, physician assistants, medical students, pharmaceutical manufacturers, health systems and medical recruiters

Role

Verified clinician network, engagement platform, workflow software and subscription-based commercial solutions provider

Revenue share

100%

Merck & Co., Inc.

Pharmaceutical

Market

Branded prescription pharmaceuticals & human vaccines

Geography

Global

Customer

Wholesalers/retailers, managed care and government payers, hospitals/clinics

Role

R&D-intensive innovator, manufacturer, and marketer

Revenue share

89.5%

Side-by-side metrics

Doximity, Inc.
Merck & Co., Inc.
Ticker / Exchange
DOCS - New York Stock Exchange
MRK - New York Stock Exchange
Market cap (USD)
$4.5B
$283.4B
Gross margin (TTM)
89.8%
81.5%
Operating margin (TTM)
37.4%
41.2%
Net margin (TTM)
37.5%
28.1%
Sector
Healthcare
Healthcare
Industry
Medical - Healthcare Information Services
Drug Manufacturers - General
HQ country
US
US
Primary segment
Medical professional platform and healthcare customer solutions
Pharmaceutical
Market structure
Competitive
Competitive
Market share
3%-4% (implied)
n/a
HHI estimate
n/a
n/a
Pricing power
Moderate
Moderate
Moat score
70 / 100
71 / 100
Moat domains
Network, Demand
Legal, Supply, Demand
Last update
2026-04-25
2025-12-22

Moat coverage

Shared moat types

Data Workflow Lockin

Doximity, Inc. strengths

Direct Network EffectsData Network EffectsProcurement InertiaBrand Trust

Merck & Co., Inc. strengths

IP Choke PointRegulated Standards PipeCapex Knowhow ScaleScope Economies

Segment mix

Doximity, Inc. segments

Full profile >

Medical professional platform and healthcare customer solutions

Competitive

100%

Merck & Co., Inc. segments

Full profile >

Pharmaceutical

Competitive

89.5%

Animal Health

Oligopoly

9.2%

Want the full wide moat stocks list?

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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.