Idemitsu Kosan CoIDKOF 67 Gross Margin % is 14.95% as of Mar. 2026, which is 44% above its 10-year median of 10.37. GuruFocus rates IDKOF with a GF Score™ of 67/100 and a GF Value™ of $6.72 (Modestly Overvalued). The stock has 4 warning signs investors should review. Among 867 Oil & Gas companies, Idemitsu Kosan Co ranks worse than 79.93% on this metric.
Idemitsu Kosan Co Ltd gross margin has been in long-term decline. The average rate of decline per year is -8%.
The historical rank and industry rank for Idemitsu Kosan Co's Gross Margin % or its related term are showing as below:
IDKOF'
s Gross Margin % Range Over the Past 10 Years
Min: 6.83 Med: 10.37 Max: 13.24
Current: 9.31
During the past 13 years, the highestGross Margin % of Idemitsu Kosan Co was 13.24%. The lowest was 6.83%. And the median was 10.37%.
IDKOF's Gross Margin % is ranked worse than 79.93% of 867
companies
in the Oil & Gas industry
Industry Median: 25.7
vs IDKOF: 9.31
Idemitsu Kosan Co had a gross margin of 14.95% for the quarter that ended in Mar. 2026 => No sustainable competitive advantage
The 5-Year average Growth Rate of Gross Margin for Idemitsu Kosan Co was -8.00% per year.
Idemitsu Kosan Co (OTCPK:IDKOF) Gross Margin % Explanation
Warren Buffett believes that firms with excellent long term economics tend to have consistently higher margins.
Durable competitive advantage creates a high Gross Margin % because of the freedom to price in excess of cost. Companies can be categorized by their Gross Margin %
1. Greater than 40% = Durable competitive advantage
2. Less than 40% = Competition eroding margins
3. Less than 20% = no sustainable competitive advantage
Consistency of Gross Margin is key
Idemitsu Kosan Co had a gross margin of 14.95% for the quarter that ended in Mar. 2026 => No sustainable competitive advantage
Be Aware
If a company loses its competitive advantages, usually its gross margin declines well before its sales declines. Watching Gross Margin % and Operating Margin % closely helps avoid value trap situations.
Idemitsu Kosan Co Gross Margin % Related Terms
Idemitsu Kosan Co Gross Margin % Historical Data
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The historical data trend for Idemitsu Kosan Co's Gross Margin % 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 Oil & Gas Refining & Marketing subindustry, Idemitsu Kosan Co's Gross Margin %, along with its competitors' market caps and Gross 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.
Idemitsu Kosan Co Gross Margin % vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Idemitsu Kosan Co's Gross Margin % distribution charts can be found below:
* The bar in red indicates where Idemitsu Kosan Co's Gross Margin % falls into.
* 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.
A positive Gross Profit is only the first step for a company to make a net profit. The gross profit needs to be big enough to also cover related labor, equipment, rental, marketing/advertising, research and development and a lot of other costs in selling the products.
Idemitsu Kosan Co (IDKOF) has a Gross Margin % of 14.95% as of Mar. 2026. Gross margin is the ratio of total gross profit to net sales. View historical data on Idemitsu Kosan Co and its competitors. This is 44% above median its historical median of 10.37. Over the past decade, Idemitsu Kosan Co's Gross Margin % has ranged from 6.83 to 13.24. According to the industry distribution chart, Idemitsu Kosan Co ranks #693 out of 867 companies in the Oil & Gas industry, placing it in the top 79.9%.
Is Idemitsu Kosan Co's Gross Margin % too high?
Idemitsu Kosan Co's current Gross Margin % of 14.95% is 44% above median its 10-year median of 10.37. Over the past 10 years, this metric has ranged from a low of 6.83 to a high of 13.24. The Oil & Gas industry median Gross Margin % is 25.70. Idemitsu Kosan Co's value of 14.95% is 41.8% below this industry median. Based on the distribution chart, Idemitsu Kosan Co ranks #693 out of 867 companies in the Oil & Gas industry, which is in the bottom quartile relative to peers. Overall, Idemitsu Kosan Co has a GF Score™ of 67/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Idemitsu Kosan Co's Gross Margin % compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Idemitsu Kosan Co ranks #693 out of 867 companies for Gross Margin %. This places Idemitsu Kosan Co in the lower half of its industry. The industry median Gross Margin % is 25.70. Idemitsu Kosan Co's value of 14.95% is 41.8% below this benchmark. Historically, Idemitsu Kosan Co's own Gross Margin % has ranged from 6.83 to 13.24 over the past decade. While the company's 10-year median is 10.37 vs. the industry median of 25.70, Idemitsu Kosan 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 Gross Margin % for an Oil & Gas company?
The median Gross Margin % among Oil & Gas companies is 25.70, based on 867 companies in the industry. Companies in the top quartile (top 25%) have a Gross Margin % significantly above this median, while those in the bottom quartile fall well below. However, Gross Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Idemitsu Kosan Co's current Gross Margin % of 14.95% is 41.8% 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 Gross Margin % mean?
A high Gross Margin % can signal that a stock is expensive relative to its fundamentals. Gross margin is the ratio of total gross profit to net sales. View historical data on Idemitsu Kosan Co and its competitors. For the Oil & Gas industry, the median Gross Margin % is 25.70 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Idemitsu Kosan Co's current Gross Margin % is 14.95%, which is 44% above median its own 10-year median of 10.37. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Idemitsu Kosan Co stock overvalued right now?
Based on GuruFocus' analysis, Idemitsu Kosan Co (IDKOF) is currently considered Modestly Overvalued. The stock's GF Value™ is $6.72, compared to a current price of $8.01 — trading 19.2% above its estimated fair value. The current Gross Margin % is 14.95%, which is 44% above median its 10-year median of 10.37 and 41.8% below the Oil & Gas industry median of 25.70. Idemitsu Kosan Co's overall GF Score™ is 67/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Gross Margin % calculated?
Gross Margin % is calculated from a company's financial statements. For Idemitsu Kosan Co (IDKOF), the current Gross Margin % is 14.95% 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 Idemitsu Kosan Co (IDKOF) Overvalued in 2026?
Based on GuruFocus' analysis, Idemitsu Kosan Co stock appears to be overvalued.
The current stock price of $8.01 is trading 19.2% above its estimated GF Value™ of $6.72.
GuruFocus considers Idemitsu Kosan Co to be Modestly Overvalued.
Key valuation signals for IDKOF:
Gross Margin %: 14.95% (44% above median its 10-year median of 10.37)
GF Value™: $6.72 vs. price of $8.01 (19.2% above fair value)
Industry Position: 41.8% below the Oil & Gas median (#693 of 867)
No single metric tells the full story. See the IDKOF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Idemitsu Kosan Co Ltd engages in a variety of activities globally that include petroleum products, oil exploration and production, coal, and other businesses. The company operates through five segments. The Basic Chemicals segment makes and sells olefins and aroma products. Electricity/Renewable Energy covers thermal, solar, and wind power generation, electricity sales, and solar business. Fuel Oil handles production, trading, and import/export of refined petroleum. The Highly Functional Materials segment includes lubricants, chemicals, electronic materials, paving materials, and agri-bio. The Resource segment explores, develops, and sells crude oil, natural gas, and coal. Others cover insurance and intra-group services. It generates the majority of its revenue from the Fuel oil segment.
67GF Score
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