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Industrials · Industrial Distribution · GB

Diploma PLC DPLM

GBX 7155 · close of Nov 9, 2026

Decentralized value-added distribution in niche industrial segments builds enduring customer loyalty and high-ROIC compounding through disciplined, low-capex capital allocation.

AI score · Solid · analysis Oct 22, 2026
6.2 of 10

Moat and Business model hold this up; Valuation is the soft spot.

Moat8.0
Management5.0
Valuation3.0
Risk · 10 = lowest7.0
Business model8.0
Optionality6.0
Fair value
AI fair value
GBX 5510
as of Nov 10, 2026
Base case
GBX 5515
the single most likely path
Analyst consensus
—
12-month target
Price
GBX 7155
price 30% above the AI fair value

The price needs 16.5% growth a year for ten years. The AI thinks 12.0% is achievable, at a 15.0% margin.

Diploma looks expensive because its current price requires the company to grow revenue at 22% a year for a decade just to break even on cash flows at today's margins. While its decentralized distribution model has a real moat and has compounded nicely historically, sustaining that pace forever is unrealistic given analyst forecasts near flat. The quality is there, but the price already assumes perfection.

The business

Diploma PLC, together with its subsidiaries, supplies specialized technical products and services in the United Kingdom, Europe, North America, and internationally. It operates through three business sectors: Controls, Seals, and Life Sciences. The Controls sector offers wire and cabling, interconnect, specialty fasteners, specialty adhesive and industrial automation solutions for various applications. The Seals sector supplies sealing and fluid power products, gaskets, hoses and fittings, pumps and valves, and solutions for aftermarket repairs, original equipment manufacturing, and maintenance, repair and overhaul projects. The Life Sciences sector supplies and services equipment; provides consumables and instrumentation for surgery, diagnosis of disease, and critical care support; and supplies diagnostic and scientific technologies, surgical instruments, medical devices, endoscopes, patient monitoring equipment, specialist hospital supplies, and clinical nutrition. It serves public and private hospitals, clinics and diagnostics laboratories. Diploma PLC was incorporated in 1999 and is based in London, the United Kingdom.

Last report Nov 18, 2025 · next Nov 17, 2026

Write why this business works, set your own fair value, and let the briefing speak only when a rule you wrote is crossed.

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General investment analysis · not personalized advice · the figures carry their dates