DiplomaDPLMF 96 PB Ratio is 8.82 as of Jun. 26, 2026, which is 52% above its 10-year median of 5.79. GuruFocus rates DPLMF with a GF Score™ of 96/100 and a GF Value™ of $73.82 (Modestly Overvalued). The stock has 7 warning signs investors should review. Among 155 Industrial Distribution companies, Diploma ranks worse than 96.77% on this metric.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-06-26), Diploma's share price is $92.29. Diploma's Book Value per Share for the quarter that ended in Mar. 2026 was $10.46. Hence, Diploma's PB Ratio of today is 8.82.
Warning Sign:
Diploma PLC stock PB Ratio (=9.18) is close to 10-year high of 9.75.
The historical rank and industry rank for Diploma's PB Ratio or its related term are showing as below:
DPLMF'
s PB Ratio Range Over the Past 10 Years
Min: 4.21 Med: 5.79 Max: 9.75
Current: 9.18
During the past 13 years, Diploma's highest PB Ratio was 9.75. The lowest was 4.21. And the median was 5.79.
DPLMF's PB Ratio is ranked worse than 96.77% of 155
companies
in the Industrial Distribution industry
Industry Median: 1.08
vs DPLMF: 9.18
During the past 12 months, Diploma's average Book Value Per Share Growth Rate was 11.40% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 11.60% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 13.10% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 16.90% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Diploma was 23.20% per year. The lowest was -15.60% per year. And the median was 9.70% per year.
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Diploma PB Ratio Related Terms
Diploma PB Ratio Historical Data
* Premium members only.
The historical data trend for Diploma's PB Ratio can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Industrial Distribution subindustry, Diploma's PB Ratio, along with its competitors' market caps and PB Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Diploma PB Ratio vs Industrial Distribution Industry
For the Industrial Distribution industry and Industrials sector, Diploma's PB Ratio distribution charts can be found below:
* The bar in red indicates where Diploma's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
Diploma's PB Ratio for today is calculated as follows:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Diploma (DPLMF) has a PB Ratio of 8.82 as of Jun. 26, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Diploma and its competitors. This is 52% above median its historical median of 5.79. Over the past decade, Diploma's PB Ratio has ranged from 4.21 to 9.75. According to the industry distribution chart, Diploma ranks #150 out of 155 companies in the Industrial Distribution industry, placing it in the top 96.8%.
Is Diploma's PB Ratio too high?
Diploma's current PB Ratio of 8.82 is 52% above median its 10-year median of 5.79. Over the past 10 years, this metric has ranged from a low of 4.21 to a high of 9.75. The Industrial Distribution industry median PB Ratio is 1.08. Diploma's value of 8.82 is 716.7% above this industry median. Based on the distribution chart, Diploma ranks #150 out of 155 companies in the Industrial Distribution industry, which is in the bottom quartile relative to peers. Overall, Diploma has a GF Score™ of 96/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Diploma's PB Ratio compare to GWW and FAST?
According to the Industrial Distribution industry distribution chart, Diploma ranks #150 out of 155 companies for PB Ratio. This places Diploma in the lower half of its industry. The industry median PB Ratio is 1.08. Diploma's value of 8.82 is 716.7% above this benchmark. Historically, Diploma's own PB Ratio has ranged from 4.21 to 9.75 over the past decade. While the company's 10-year median is 5.79 vs. the industry median of 1.08, Diploma has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PB Ratio for an Industrial Distribution company?
The median PB Ratio among Industrial Distribution companies is 1.08, based on 155 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Diploma's current PB Ratio of 8.82 is 716.7% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Diploma and its competitors. For the Industrial Distribution industry, the median PB Ratio is 1.08 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Diploma's current PB Ratio is 8.82, which is 52% above median its own 10-year median of 5.79. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Diploma stock overvalued right now?
Based on GuruFocus' analysis, Diploma (DPLMF) is currently considered Modestly Overvalued. The stock's GF Value™ is $73.82, compared to a current price of $92.29 — trading 25% above its estimated fair value. The current PB Ratio is 8.82, which is 52% above median its 10-year median of 5.79 and 716.7% above the Industrial Distribution industry median of 1.08. Diploma's overall GF Score™ is 96/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Diploma (DPLMF), the current PB Ratio is 8.82 as of Jun. 26, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Diploma (DPLMF) Overvalued in 2026?
Based on GuruFocus' analysis, Diploma stock appears to be overvalued.
The current stock price of $92.29 is trading 25% above its estimated GF Value™ of $73.82.
GuruFocus considers Diploma to be Modestly Overvalued.
Key valuation signals for DPLMF:
PB Ratio: 8.82 (52% above median its 10-year median of 5.79)
GF Value™: $73.82 vs. price of $92.29 (25% above fair value)
Industry Position: 716.7% above the Industrial Distribution median (#150 of 155)
No single metric tells the full story. See the DPLMF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Diploma PLC is a group of businesses supplying specialised technical products and services to various industries. The Group is organized into three main reportable business sectors: Controls, Seals and Life Sciences. The company offers consumables, instrumentation, and related services to the healthcare and environmental industries; seals, gaskets, filters, cylinders, components, and kits for heavy mobile machinery and industrial equipment; and specialized wiring, connectors, fasteners, and control devices for various applications. It operates in segments such as Wire & Cable (UK), Industrial Automation, Specialty Adhesives, Windy City Wire, Interconnect and Specialty Fasteners. The company operates in UK, USA, Rest of Europe, and Rest of World.
96GF Score
Get the complete analysis for DPLMF
PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
DPLMF has been successfully added to your 
