* The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.
The historical rank and industry rank for Idemitsu Kosan Co's PEG Ratio or its related term are showing as below:
IDKOF'
s PEG Ratio Range Over the Past 10 Years
Min: 0 Med: 0 Max: 1.1
Current: 1.1
During the past 13 years, Idemitsu Kosan Co's highest PEG Ratio was 1.10. The lowest was 0.00. And the median was 0.00.
IDKOF's PEG Ratio is ranked worse than 53.47% of 303
companies
in the Oil & Gas industry
Industry Median: 0.97
vs IDKOF: 1.10
Peter Lynch thinks a company with a P/E ratio equal to its growth rate is fairly valued.
Idemitsu Kosan Co (OTCPK:IDKOF) PEG Ratio Explanation
To compare stocks with different growth rates, Peter Lynch invented a ratio called PEG Ratio. PEG Ratio is defined as the P/E ratio divided by the growth ratio. He thinks a company with a P/E ratio equal to its growth rate is fairly valued. Still he said he would rather buy a company growing 20% a year with a P/E of 20, instead of a company growing 10% a year with a P/E of 10.
Idemitsu Kosan Co PEG Ratio Related Terms
Idemitsu Kosan Co PEG Ratio Historical Data
* Premium members only.
The historical data trend for Idemitsu Kosan Co's PEG 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 Oil & Gas Refining & Marketing subindustry, Idemitsu Kosan Co's PEG Ratio, along with its competitors' market caps and PEG 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.
Idemitsu Kosan Co PEG Ratio vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Idemitsu Kosan Co's PEG Ratio distribution charts can be found below:
* The bar in red indicates where Idemitsu Kosan Co's PEG Ratio 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.
* Note: The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.
Idemitsu Kosan Co (IDKOF) has a PEG Ratio of 1.12 as of Jun. 27, 2026. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Idemitsu Kosan Co and its competitors. According to the industry distribution chart, Idemitsu Kosan Co ranks #162 out of 303 companies in the Oil & Gas industry, placing it in the top 53.5%.
Is Idemitsu Kosan Co's PEG Ratio too high?
Idemitsu Kosan Co's current PEG Ratio is 1.12. The Oil & Gas industry median PEG Ratio is 0.97. Idemitsu Kosan Co's value of 1.12 is 15.5% above this industry median. Based on the distribution chart, Idemitsu Kosan Co ranks #162 out of 303 companies in the Oil & Gas industry, which is below the industry midpoint. 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 PEG Ratio compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Idemitsu Kosan Co ranks #162 out of 303 companies for PEG Ratio. This places Idemitsu Kosan Co in the lower half of its industry. The industry median PEG Ratio is 0.97. Idemitsu Kosan Co's value of 1.12 is 15.5% above this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PEG Ratio for an Oil & Gas company?
The median PEG Ratio among Oil & Gas companies is 0.97, based on 303 companies in the industry. Companies in the top quartile (top 25%) have a PEG Ratio significantly above this median, while those in the bottom quartile fall well below. However, PEG Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Idemitsu Kosan Co's current PEG Ratio of 1.12 is 15.5% 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 PEG Ratio mean?
A high PEG Ratio can signal that a stock is expensive relative to its fundamentals. Price-earnings to growth ratio is the ratio of price-earnings to a company's earnings growth rate. View historical data on Idemitsu Kosan Co and its competitors. For the Oil & Gas industry, the median PEG Ratio is 0.97 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Idemitsu Kosan Co's current PEG Ratio is 1.12. 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 $7.02, compared to a current price of $8.01 — trading 14.1% above its estimated fair value. The current PEG Ratio is 1.12 and 15.5% above the Oil & Gas industry median of 0.97. 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 PEG Ratio calculated?
PEG Ratio is calculated from a company's financial statements. For Idemitsu Kosan Co (IDKOF), the current PEG Ratio is 1.12 as of Jun. 27, 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 14.1% above its estimated GF Value™ of $7.02.
GuruFocus considers Idemitsu Kosan Co to be Modestly Overvalued.
Key valuation signals for IDKOF:
PEG Ratio: 1.12
GF Value™: $7.02 vs. price of $8.01 (14.1% above fair value)
Industry Position: 15.5% above the Oil & Gas median (#162 of 303)
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
Get the complete analysis for IDKOF
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