Diamond Electric Holdings CoTSE:6699 +1.51%53 Operating Margin % is 2.72% as of Mar. 2026, which is 202% above its 10-year median of 0.90. GuruFocus rates TSE:6699 with a GF Score™ of 53/100 and a GF Value™ of 円635.28 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 1,325 Vehicles & Parts companies, Diamond Electric Holdings Co ranks worse than 66.72% on this metric.
Diamond Electric Holdings Co (TSE:6699) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Diamond Electric Holdings Co Operating Margin % Related Terms
Diamond Electric Holdings Co Operating Margin % Historical 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.
Diamond Electric Holdings Co Operating Margin % Chart
TSE:6699 vs ORLY, AZO: Operating Margin % Comparison
For the Auto Parts subindustry, Diamond Electric Holdings Co's Operating Margin %, along with its competitors' market caps and Operating Margin % 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 Operating Margin % vs Vehicles & Parts Industry
For the Vehicles & Parts industry and Consumer Cyclical sector, Diamond Electric Holdings Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Diamond Electric Holdings Co's Operating Margin % falls into.
Diamond Electric Holdings Co Operating Margin % Calculation
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
* 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 (TSE:6699) has a Operating Margin % of 2.72% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Diamond Electric Holdings Co and its competitors. This is 202% above median its historical median of 0.90. According to the industry distribution chart, Diamond Electric Holdings Co ranks #884 out of 1325 companies in the Vehicles & Parts industry, placing it in the top 66.7%.
Is Diamond Electric Holdings Co's Operating Margin % too high?
Diamond Electric Holdings Co's current Operating Margin % of 2.72% is 202% above median its 10-year median of 0.90. The Vehicles & Parts industry median Operating Margin % is 4.86. Diamond Electric Holdings Co's value of 2.72% is 44% below this industry median. Based on the distribution chart, Diamond Electric Holdings Co ranks #884 out of 1325 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 Operating Margin % compare to ORLY and AZO?
According to the Vehicles & Parts industry distribution chart, Diamond Electric Holdings Co ranks #884 out of 1325 companies for Operating Margin %. This places Diamond Electric Holdings Co in the lower half of its industry. The industry median Operating Margin % is 4.86. Diamond Electric Holdings Co's value of 2.72% is 44% below this benchmark. While the company's 10-year median is 0.90 vs. the industry median of 4.86, 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 Operating Margin % for a Vehicles & Parts company?
The median Operating Margin % among Vehicles & Parts companies is 4.86, based on 1,325 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Diamond Electric Holdings Co's current Operating Margin % of 2.72% is 44% 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 Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Diamond Electric Holdings Co and its competitors. For the Vehicles & Parts industry, the median Operating Margin % is 4.86 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Diamond Electric Holdings Co's current Operating Margin % is 2.72%, which is 202% above median its own 10-year median of 0.90. 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635.28, compared to a current price of 円471.00 — trading 25.9% below its estimated fair value. The current Operating Margin % is 2.72%, which is 202% above median its 10-year median of 0.90 and 44% below the Vehicles & Parts industry median of 4.86. 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 Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Diamond Electric Holdings Co (TSE:6699), the current Operating Margin % is 2.72% 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471.00 is trading 25.9% below its estimated GF Value™ of 円635.28.
GuruFocus considers Diamond Electric Holdings Co to be Modestly Undervalued.
Key valuation signals for TSE:6699:
Operating Margin %: 2.72% (202% above median its 10-year median of 0.90)
GF Value™: 円635.28 vs. price of 円471.00 (25.9% below fair value)
Industry Position: 44% below the Vehicles & Parts median (#884 of 1325)
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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