VOL. XCIV, NO. 247

* WIDE MOAT STOCKS COMPARISON *

NO ADVICE

Sunday, December 28, 2025

Stock Comparison

GSK plc vs Teradyne, Inc.

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

GSK plc

GSK · London Stock Exchange

Market cap (USD)$98.8B
SectorHealthcare
CountryGB
Data as of2025-12-28
Moat score
62/ 100

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

View full moat analysis >

Teradyne, Inc.

TER · Nasdaq Stock Market

Market cap (USD)$31B
SectorTechnology
CountryUS
Data as of2025-12-23
Moat score
79/ 100

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

View full moat analysis >

Side-by-side metrics

GSK plc
Teradyne, Inc.
Ticker / Exchange
GSK - London Stock Exchange
TER - Nasdaq Stock Market
Market cap (USD)
$98.8B
$31B
Sector
Healthcare
Technology
HQ country
GB
US
Primary segment
Specialty Medicines
Semiconductor Test
Market structure
Oligopoly
Duopoly
Market share
n/a
27%-30% (implied)
HHI estimate
n/a
3,565
Pricing power
Strong
Moderate
Moat score
62 / 100
79 / 100
Moat domains
Supply, Legal, Demand
Demand, Supply, Network
Last update
2025-12-28
2025-12-23

Moat coverage

Shared moat types

Capex Knowhow ScaleSwitching Costs General

GSK plc strengths

Compliance AdvantageIP Choke Point

Teradyne, Inc. strengths

Format Lock InDesign In QualificationEcosystem ComplementsBrand Trust

Segment mix

GSK plc segments

Full profile >

Vaccines

Oligopoly

29.1%

Specialty Medicines

Oligopoly

37.6%

General Medicines

Competitive

33.2%

Teradyne, Inc. segments

Full profile >

Semiconductor Test

Duopoly

77.9%

Product Test

Competitive

11.7%

Robotics

Competitive

10.4%

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 Pricing, features, and availability may be incomplete or out of date.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.