Diploma PLC (DPLM) Fair Value & Analysis
Industrials · GB · Market cap 9.1B GBX
Fair value as of: Jul 12, 2026
From 26 valuation models · updated 26 days ago
Share price +13.2% over the past month.
A solid business, but screening 57% overvalued on our models.
What matters now
- A high-quality business (quality 70/100), yet the market already pays well above fair value. Quality at a full price, with little margin of safety.
- The price sits above even our optimistic bull case (£36.20). The favourable scenario is already priced in.
- A fairly wide model range (£19.26 to £36.20) leaves room in how you read the outcome.
Price vs Fair Value (5 years)
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Jul 12, 2026.
How to read this chart
60‑month range £17.99 – £68.00 · fair‑value band £19.26 – £36.20 · the £68.00 price screens above the £28.96 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Jul 12, 2026.
Analysis
Diploma PLC (DPLM) currently trades at £68.00, while our model-based Fair Value estimate is £28.96, implying the stock looks roughly 57.4% overvalued today. We read business quality at 70/100 (solid quality), in the Industrials sector. Bear case: priced above our estimate, the market already discounts strong expectations. Bull case: above-average quality can justify a premium, the entry price still matters most (evidence: high).
Over the trailing twelve months, Diploma PLC generated revenue of £1.6B at a net margin of 11.5%. Revenue grew 16.8% year over year. It earns a return on equity of 19.0%. Net debt stands at £383M. Fundamentals as of Jul 12, 2026
Our scenario range runs from £19.26 (bear case) to £36.20 (bull case); at £68.00, the current price sits above that range. Bear and bull are the same models run on conservative and optimistic assumptions (margins, growth, valuation multiples), so a plausible valuation range, not a price target. The last reported earnings sit well below what analysts expect (earnings in transition, for example after write-downs or an earnings dip); whether the stock is cheap or expensive hinges on the expected recovery actually arriving. Read the fair value with that caveat. For context, the median of 10 Industrials peers we cover trades at -35% fair-value upside, at -57%, DPLM screens richer than that median.
Fair Value models
Each model estimates fair value its own way; the Fair Value above is the evidence-weighted blend. Evidence (0–100) measures how completely this model’s inputs are available: well-fed models carry more weight in the blend. The spread across models is intentional, each one stresses a different value driver; dividend models, for instance, come out structurally low when payout is small.
All 26 models by family
Widest divergence: Growth DCF (£32.70) versus Asset-Based (£4.95). Highest evidence: Growth DCF (80).
Key figures & financial health
More key figures
Figures from reported company fundamentals · as of Jul 12, 2026. TTM = trailing twelve months.
Quality Score breakdown
Of which business quality 65 · Market factors (momentum, volatility) 77
Non-valuation factor families (profitability, growth, cashflow, financial strength, momentum …), each academically grounded. Valuation itself sits in the Fair Value and is deliberately excluded here to avoid double-counting.
About the company
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.
Full company description
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.
Company description, as reported by the company or data provider.
Revenue & earnings trend
FY2021 – FY2025 · reported fiscal years
Diploma PLC reported revenue of £1.5B in FY2025 versus £787M in FY2021, a compound +18.0%/yr. Reported net income was £185M in FY2025, compounding +27.6%/yr from FY2021.
DPLM screens 57% overvalued. Compare with W.W. Grainger, Inc →
Peer Group
Industrial Distribution · 102 stocks
How this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.
Valuation Multiples vs Industrial Distribution median · lower = cheaper
Snowflake
Five quick dimensions, each 0 to 100: VALUE (fair-value potential), FUTURE (revenue growth), PAST (return on equity), HEALTH (low debt), DIVIDEND (yield). Green = this stock, grey = typical sector peer.
VALUE 0: the price sits above our fair-value range.
Insider activity: 40/100
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
ESG scores are not available for this stock yet. Values and ESG data are contextual and can differ between providers.
Similar stocks
10 more Industrial Distribution stocks, each showing price versus our Fair Value estimate (as of Jul 12, 2026).
| Stock | Price | Fair Value | vs Fair Value |
|---|---|---|---|
| W.W. Grainger, Inc GWW | $1,376 | $625.61 | -55% |
| Fastenal Company FAST | $45.49 | $20.64 | -55% |
| Ferguson Enterprises Inc FERG | $232.02 | $151.92 | -35% |
| WESCO International, Inc WCC | $326.71 | $213.01 | -35% |
| Watsco, Inc WSO | $385.16 | $268.10 | -30% |
| Toromont Industries Ltd TIH | C$232.22 | C$127.90 | -45% |
| Applied Industrial Technologies, Inc AIT | $329.35 | $191.65 | -42% |
| Finning International Inc FTT | C$102.50 | C$76.38 | -25% |
| Addtech AB ADDTB | kr 329.20 | kr 156.35 | -53% |
| Core & Main, Inc CNM | $44.66 | $49.47 | +11% |
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How we calculate Fair Value
Each company is valued through a stack of independent intrinsic-value models (DCF variants, residual-income, multiples and more), blended into one family-balanced consensus and weighted by how much trustworthy data backs it. A separate quality layer scores the fundamentals. Every input is real reported data, nothing guessed.
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