DPLMF (Diploma) 10-Year Sharpe Ratio: 0.40 (As of Sep. 21, 2026)

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Director of Data and Quant Analytics at GuruFocus
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Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

DPLMF Diploma PLC DPLMF
96 GF Score
Price $98.18
GF Value $78.63
Valuation Modestly Overvalued
! 5 Warning Signs
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What is Diploma 10-Year Sharpe Ratio?

Diploma DPLMF 96 10-Year Sharpe Ratio is 0.40 as of Sep. 21, 2026. GuruFocus rates DPLMF with a GF Score™ of 96/100 and a GF Value™ of $78.63 (Modestly Overvalued). The stock has 5 warning signs investors should review.

The 10-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past ten years. As of today (2026-09-21), Diploma's 10-Year Sharpe Ratio is 0.40.


Diploma  (OTCPK:DPLMF) 10-Year Sharpe Ratio Explanation

The 10-Year Sharpe Ratio inidicates the risk-adjusted return of an investment over the past ten years. It is calculated as the annualized result of the average ten-year monthly excess returns divided by its standard deviation in the ten-year period. The monthly excess return is the monthly investment return minus the monthly risk-free rate (typically the 10-year Treasury Constant Maturity Rate). If the risk-free rate for a specific region is not available, U.S. data is used by default.

The greater a portfolio's Sharpe Ratio, the better its risk-adjusted performance. A negative Sharpe Ratio means the risk-free rate is greater than the portfolio’s historical or projected return, or else the portfolio's return is expected to be negative.


Diploma 10-Year Sharpe Ratio Related Terms


DPLMF vs GWW, FAST, FERG: 10-Year Sharpe Ratio Comparison

For the Industrial Distribution subindustry, Diploma's 10-Year Sharpe Ratio, along with its competitors' market caps and 10-Year Sharpe 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 10-Year Sharpe Ratio vs Industrial Distribution Industry

For the Industrial Distribution industry and Industrials sector, Diploma's 10-Year Sharpe Ratio distribution charts can be found below:

* The bar in red indicates where Diploma's 10-Year Sharpe Ratio falls into.


DPLMF
96GF Score
Diploma PLC DPLMF
10-Year Sharpe Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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Diploma 10-Year Sharpe Ratio Calculation

The 10-Year Sharpe Ratio measures the performance of an investment such as a stock or portfolio compared to a risk-free asset in the last ten years. A stock / portfolio's 10-Year Sharpe Ratio can be calculated by dividing the difference between the ten-year average monthly returns of the investment and the risk-free rate, by the standard deviation of the investment returns over the past ten years.

Frequently Asked Questions Learn more about 10-Year Sharpe Ratio →
What does a 10-Year Sharpe Ratio of 0.40 mean?
Diploma (DPLMF) has a 10-Year Sharpe Ratio of 0.40 as of Sep. 21, 2026. 10-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past ten years. View historical data for Diploma and its competitors.
Is Diploma's 10-Year Sharpe Ratio too high?
Diploma's current 10-Year Sharpe Ratio is 0.40. 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 10-Year Sharpe Ratio compare to GWW and FAST?
Diploma's 10-Year Sharpe Ratio of 0.40 can be compared against companies in the Industrial Distribution industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 10-Year Sharpe Ratio for an Industrial Distribution company?
A good 10-Year Sharpe Ratio depends on the Industrial Distribution industry context. However, 10-Year Sharpe Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high 10-Year Sharpe Ratio mean?
A high 10-Year Sharpe Ratio can signal that a stock is expensive relative to its fundamentals. 10-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past ten years. View historical data for Diploma and its competitors. Diploma's current 10-Year Sharpe Ratio is 0.40. 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 $78.63, compared to a current price of $98.18 — trading 24.9% above its estimated fair value. The current 10-Year Sharpe Ratio is 0.40. Diploma's overall GF Score™ is 96/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 10-Year Sharpe Ratio calculated?
10-Year Sharpe Ratio is calculated from a company's financial statements. For Diploma (DPLMF), the current 10-Year Sharpe Ratio is 0.40 as of Sep. 21, 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 $98.18 is trading 24.9% above its estimated GF Value™ of $78.63. GuruFocus considers Diploma to be Modestly Overvalued.

Key valuation signals for DPLMF:

  • 10-Year Sharpe Ratio: 0.40
  • GF Value™: $78.63 vs. price of $98.18 (24.9% above fair value)
  • GF Score™: 96/100 with 5 warning signs

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 Business Description

Address 10-11 Charterhouse Square, London, GBR, EC1M 6EE
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

10-Year Sharpe Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$98.18
Price
$78.63
GF Value