Idemitsu Kosan Co has the GF Score of 67, which implies that the company
might have
Poor future performance potential.
The GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation, which has been found to be closely correlated to the long-term performances of stocks by backtesting from 2006 to 2021. The stocks with a higher GF Score generally generate higher returns than those with lower GF Scores. Therefore, when picking stocks, investors should invest in companies with high GF Scores. The GF Score ranges from 0 to 100, with 100 as the highest rank.
GF Score takes following five key aspects into consideration:
Each one of these components is ranked and the ranks also have positive correlation with the long term performances of stocks. The GF score is calculated using the five key aspects of analysis. Through backtesting, we know that each of these key aspects has a different impact on the stock price performance. Thus, they are weighted differently when calculating the total score. The Profitability Rank and the Growth Rank are weighted fully, while other parameters have less weight.
Based on research and backtesting result, GuruFocus believes Idemitsu Kosan Co
might have
Poor future performance potential.
Please click GF Score to see more details on the GF Score's 5 Key Aspects of Analysis.
Idemitsu Kosan Co (OTCPK:IDKOF) GF Score Explanation
Based on the historical long-term performances among five valuation aspects, the GF Score is found to be closely correlated to the long-term performances of stocks. It ranges from 0 to 100, with 100 as the highest. GuruFocus divided GF Score into following 5 categories:
GF Score
Performance Potential and All-in-One Screener Examples (1)
(1) These are some simple examples. You can access our GF Score filter under All-in-One Screener’s Fundamental tab.
Idemitsu Kosan Co GF Score Related Terms
IDKOF vs VLO, MPC, PSX: GF Score Comparison
For the Oil & Gas Refining & Marketing subindustry, Idemitsu Kosan Co's GF Score, along with its competitors' market caps and GF Score 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 GF Score vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Idemitsu Kosan Co's GF Score distribution charts can be found below:
* The bar in red indicates where Idemitsu Kosan Co's GF Score falls into.
Idemitsu Kosan Co (IDKOF) has a GF Score of 67 as of Jun. 28, 2026. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on Idemitsu Kosan Co and its competitors. This is near median its historical median of 67.00. Over the past decade, Idemitsu Kosan Co's GF Score has ranged from 27.00 to 87.00.
Is Idemitsu Kosan Co's GF Score too high?
Idemitsu Kosan Co's current GF Score of 67 is near median its 10-year median of 67.00. Over the past 10 years, this metric has ranged from a low of 27.00 to a high of 87.00. 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 GF Score compare to VLO and MPC?
Idemitsu Kosan Co's GF Score of 67 can be compared against companies in the Oil & Gas industry. Historically, Idemitsu Kosan Co's own GF Score has ranged from 27.00 to 87.00 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good GF Score for an Oil & Gas company?
A good GF Score depends on the Oil & Gas industry context. However, GF Score 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 GF Score mean?
A high GF Score can signal that a stock is expensive relative to its fundamentals. GF Score is a stock performance ranking system developed by GuruFocus using five aspects of valuation. View historical data on Idemitsu Kosan Co and its competitors. Idemitsu Kosan Co's current GF Score is 67, which is near median its own 10-year median of 67.00. 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 GF Score is 67, which is near median its 10-year median of 67.00. 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 GF Score calculated?
GF Score is calculated from a company's financial statements. For Idemitsu Kosan Co (IDKOF), the current GF Score is 67 as of Jun. 28, 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:
GF Score: 67 (near median its 10-year median of 67.00)
GF Value™: $7.02 vs. price of $8.01 (14.1% above fair value)
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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