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Diamond Electric Holdings CoTSE:6699 -0.62%53 ROC (Joel Greenblatt) % is 6.22% as of Mar. 2026, which is 31% above its 10-year median of 4.76. GuruFocus rates TSE:6699 with a GF Score™ of 53/100 and a GF Value™ of 円634.79 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 1,331 Vehicles & Parts companies, Diamond Electric Holdings Co ranks worse than 63.49% on this metric.
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits). He defines ROC (Joel Greenblatt) % as EBIT divided by the total of Property, Plant and Equipment and net working capital. Diamond Electric Holdings Co's annualized ROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was 6.22%.
The historical rank and industry rank for Diamond Electric Holdings Co's ROC (Joel Greenblatt) % or its related term are showing as below:
TSE:6699'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: -5.57 Med: 4.76 Max: 7.53
Current: 7.53
During the past 8 years, Diamond Electric Holdings Co's highest ROC (Joel Greenblatt) % was 7.53%. The lowest was -5.57%. And the median was 4.76%.
TSE:6699's ROC (Joel Greenblatt) % is ranked worse than 63.49% of 1331
companies
in the Vehicles & Parts industry
Industry Median: 12.07
vs TSE:6699: 7.53
Diamond Electric Holdings Co (TSE:6699) ROC (Joel Greenblatt) % Explanation
The way Joel Greenblatt defines Return on Capital is a more accurate measure of how efficiently the company generates returns onthe capital actually invested in the business. EBIT is used instead of net income because the tax and interest payment may be affected by factors other than the core business operation. Intangible assets are not included in the calculation because they don't need to be replaced.
* 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.
Diamond Electric Holdings Co ROC (Joel Greenblatt) % Chart
TSE:6699 vs ORLY, AZO: ROC (Joel Greenblatt) % Comparison
For the Auto Parts subindustry, Diamond Electric Holdings Co's ROC (Joel Greenblatt) %, along with its competitors' market caps and ROC (Joel Greenblatt) % 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.
Diamond Electric Holdings Co ROC (Joel Greenblatt) % vs Vehicles & Parts Industry
For the Vehicles & Parts industry and Consumer Cyclical sector, Diamond Electric Holdings Co's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Diamond Electric Holdings Co's ROC (Joel Greenblatt) % falls into.
Diamond Electric Holdings Co ROC (Joel Greenblatt) % Calculation
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits) . He defines Return on Capital as follows:
EBIT stands for Earnings Before Interest and Taxes.
Fixed Assets are also known as non-current assets. They include the Property, Plant and Equipment that the firm needs in its operation.
GuruFocus calculates net working capital as: (Accounts Receivable + Total Inventories + Other Current Assets) - (Accounts Payable & Accrued Expense + Deferred Revenue + Other Current Liabilities). We're trying to account for OPERATING assets and liabilities (part of daily business) when calculating working capital. Cash and marketable securities are considered NON-OPERATING assets and are not included in calculation. We will also back out all interest bearing debt, short term debt and the portion of long term debt that is due in the current period from the current liabilities. This debt will be considered when computing cost of capital and it would be inappropriate to count it twice.
Note:
The EBIT data used here is two times the semi-annual (Mar. 2026) EBIT data.
* 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.
What does a ROC (Joel Greenblatt) % of 6.22% mean?
Diamond Electric Holdings Co (TSE:6699) has a ROC (Joel Greenblatt) % of 6.22% as of Mar. 2026. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on Diamond Electric Holdings Co and its competitors. This is 31% above median its historical median of 4.76. According to the industry distribution chart, Diamond Electric Holdings Co ranks #845 out of 1331 companies in the Vehicles & Parts industry, placing it in the top 63.5%.
Is Diamond Electric Holdings Co's ROC (Joel Greenblatt) % too high?
Diamond Electric Holdings Co's current ROC (Joel Greenblatt) % of 6.22% is 31% above median its 10-year median of 4.76. The Vehicles & Parts industry median ROC (Joel Greenblatt) % is 12.07. Diamond Electric Holdings Co's value of 6.22% is 48.5% below this industry median. Based on the distribution chart, Diamond Electric Holdings Co ranks #845 out of 1331 companies in the Vehicles & Parts industry, which is below the industry midpoint. Overall, Diamond Electric Holdings Co has a GF Score™ of 53/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Diamond Electric Holdings Co's ROC (Joel Greenblatt) % compare to ORLY and AZO?
According to the Vehicles & Parts industry distribution chart, Diamond Electric Holdings Co ranks #845 out of 1331 companies for ROC (Joel Greenblatt) %. This places Diamond Electric Holdings Co in the lower half of its industry. The industry median ROC (Joel Greenblatt) % is 12.07. Diamond Electric Holdings Co's value of 6.22% is 48.5% below this benchmark. While the company's 10-year median is 4.76 vs. the industry median of 12.07, Diamond Electric Holdings Co has consistently been below 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 ROC (Joel Greenblatt) % for a Vehicles & Parts company?
The median ROC (Joel Greenblatt) % among Vehicles & Parts companies is 12.07, based on 1,331 companies in the industry. Companies in the top quartile (top 25%) have a ROC (Joel Greenblatt) % significantly above this median, while those in the bottom quartile fall well below. However, ROC (Joel Greenblatt) % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Diamond Electric Holdings Co's current ROC (Joel Greenblatt) % of 6.22% is 48.5% below 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 ROC (Joel Greenblatt) % mean?
A high ROC (Joel Greenblatt) % can signal that a stock is expensive relative to its fundamentals. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on Diamond Electric Holdings Co and its competitors. For the Vehicles & Parts industry, the median ROC (Joel Greenblatt) % is 12.07 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Diamond Electric Holdings Co's current ROC (Joel Greenblatt) % is 6.22%, which is 31% above median its own 10-year median of 4.76. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Diamond Electric Holdings Co stock overvalued right now?
Based on GuruFocus' analysis, Diamond Electric Holdings Co (TSE:6699) is currently considered Modestly Undervalued. The stock's GF Value™ is 円634.79, compared to a current price of 円482.00 — trading 24.1% below its estimated fair value. The current ROC (Joel Greenblatt) % is 6.22%, which is 31% above median its 10-year median of 4.76 and 48.5% below the Vehicles & Parts industry median of 12.07. Diamond Electric Holdings Co's overall GF Score™ is 53/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROC (Joel Greenblatt) % calculated?
ROC (Joel Greenblatt) % is calculated from a company's financial statements. For Diamond Electric Holdings Co (TSE:6699), the current ROC (Joel Greenblatt) % is 6.22% as of Mar. 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 Diamond Electric Holdings Co (TSE:6699) Overvalued in 2026?
Based on GuruFocus' analysis, Diamond Electric Holdings Co stock appears to be undervalued.
The current stock price of 円482.00 is trading 24.1% below its estimated GF Value™ of 円634.79.
GuruFocus considers Diamond Electric Holdings Co to be Modestly Undervalued.
Key valuation signals for TSE:6699:
ROC (Joel Greenblatt) %: 6.22% (31% above median its 10-year median of 4.76)
GF Value™: 円634.79 vs. price of 円482.00 (24.1% below fair value)
Industry Position: 48.5% below the Vehicles & Parts median (#845 of 1331)
No single metric tells the full story. See the TSE:6699 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Diamond Electric Holdings Co Ltd is engaged in the manufacture and sale of electronic and energy-related components. The company has three reportable segments: Automotive Equipment Business, Energy Solutions Business, and Electronic Equipment Business. The Automotive Equipment segment manufactures ignition coils, transmission switches, rotation sensors, and in-vehicle control boards. The Energy Solutions segment produces power conditioners for solar power generation and energy storage hybrid systems. The Electronic Equipment segment manufactures electronic control devices for fan heaters, air conditioners, water heaters, and other related products such as ignition devices and power conditioners.
53GF Score
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