Idemitsu Kosan CoIDKOF 67 Altman Z-Score is 2.47 as of Jun. 25, 2026, which is 13% above its 10-year median of 2.19. 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 897 Oil & Gas companies, Idemitsu Kosan Co ranks better than 60.42% on this metric.
The Altman Z-Score is a model designed to predict the likelihood of a company going bankrupt within the next two years. Created by American finance professor Edward Altman in 1968, the model is specifically designed for publicly traded manufacturing companies with assets greater than $1 million.
Warning Sign:
Altman Z-score of 2.4 is in the grey area. This implies that the company is under some kind of financial stress. If it is below 1.8, the company may face bankruptcy risk.
Idemitsu Kosan Co has a Altman Z-Score of 2.47, indicating it is in Grey Zones. This implies that Idemitsu Kosan Co is in some kind of financial stress. If it is below 1.81, the company may face bankrupcy risk.
The zones of discrimination were as such:
When Altman Z-Score <= 1.8, it is in Distress Zones.
When Altman Z-Score >= 3, it is in Safe Zones.
When Altman Z-Score is between 1.8 and 3, it is in Grey Zones.
The historical rank and industry rank for Idemitsu Kosan Co's Altman Z-Score or its related term are showing as below:
IDKOF'
s Altman Z-Score Range Over the Past 10 Years
Min: 1.56 Med: 2.19 Max: 2.76
Current: 2.4
During the past 13 years, Idemitsu Kosan Co's highest Altman Z-Score was 2.76. The lowest was 1.56. And the median was 2.19.
Idemitsu Kosan Co (OTCPK:IDKOF) Altman Z-Score Explanation
X1: The Working Capital/Total Assets (WC/TA) ratio is a measure of the net liquid assets of the firm relative to the total capitalization. Working capital is defined as the difference between current assets and current liabilities. Ordinarily, a firm experiencing consistent operating losses will have shrinking current assets in relation to total assets. Altman found this one proved to be the most valuable liquidity ratio comparing with the current ratio and the quick ratio. This is however the least significant of the five factors.
X2: Retained Earnings/Total Assets: the RE/TA ratio measures the leverage of a firm. Retained earnings is the account which reports the total amount of reinvested earnings and/or losses of a firm over its entire life. Those firms with high RE, relative to TA, have financed their assets through retention of profits and have not utilized as much debt.
X3, Earnings Before Interest and Taxes/Total Assets (EBIT/TA): This ratio is a measure of the true productivity of the firm's assets, independent of any tax or leverage factors. Since a firm's ultimate existence is based on the earning power of its assets, this ratio appears to be particularly appropriate for studies dealing with corporate failure. This ratio continually outperforms other profitability measures, including cash flow.
X4, Market Value of Equity/Book Value of Total Liabilities (MVE/TL): The measure shows how much the firm's assets can decline in value (measured by market value of equity plus debt) before the liabilities exceed the assets and the firm becomes insolvent.
X5, Revenue/Total Assets (S/TA): The capital-turnover ratio is a standard financial ratio illustrating the sales generating ability of the firm's assets.
Altman Z-Score does not apply to financial companies.
Idemitsu Kosan Co Altman Z-Score Related Terms
Idemitsu Kosan Co Altman Z-Score Historical Data
* Premium members only.
The historical data trend for Idemitsu Kosan Co's Altman Z-Score 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 Altman Z-Score, along with its competitors' market caps and Altman Z-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 Altman Z-Score vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Idemitsu Kosan Co's Altman Z-Score distribution charts can be found below:
* The bar in red indicates where Idemitsu Kosan Co's Altman Z-Score falls into.
Altman Z-Score model is an accurate forecaster of failure up to two years prior to distress. It can be considered the assessment of the distress of industrial corporations.
Idemitsu Kosan Co's Altman Z-Score for today is calculated with this formula:
Z
=
1.2
*
X1
+
1.4
*
X2
+
3.3
*
X3
+
0.6
*
X4
+
1.0
*
X5
=
1.2
*
0.1153
+
1.4
*
0.2343
+
3.3
*
0.0459
+
0.6
*
0.4312
+
1.0
*
1.5892
=
2.47
* 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. GuruFocus does not calculate Altman Z-Score when X4 or X5 value is 0.
Idemitsu Kosan Co (IDKOF) has a Altman Z-Score of 2.47 as of Jun. 25, 2026. The Altman Z-score measures a company's bankruptcy risk. View historical data on Idemitsu Kosan Co and its competitors. This is 13% above median its historical median of 2.19. Over the past decade, Idemitsu Kosan Co's Altman Z-Score has ranged from 1.56 to 2.76. According to the industry distribution chart, Idemitsu Kosan Co ranks #355 out of 897 companies in the Oil & Gas industry, placing it in the top 39.6%.
Is Idemitsu Kosan Co's Altman Z-Score too high?
Idemitsu Kosan Co's current Altman Z-Score of 2.47 is 13% above median its 10-year median of 2.19. Over the past 10 years, this metric has ranged from a low of 1.56 to a high of 2.76. The Oil & Gas industry median Altman Z-Score is 1.91. Idemitsu Kosan Co's value of 2.47 is 29.3% above this industry median. Based on the distribution chart, Idemitsu Kosan Co ranks #355 out of 897 companies in the Oil & Gas industry, which is above 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 Altman Z-Score compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Idemitsu Kosan Co ranks #355 out of 897 companies for Altman Z-Score. This puts Idemitsu Kosan Co in the upper half of its industry. The industry median Altman Z-Score is 1.91. Idemitsu Kosan Co's value of 2.47 is 29.3% above this benchmark. Historically, Idemitsu Kosan Co's own Altman Z-Score has ranged from 1.56 to 2.76 over the past decade. While the company's 10-year median is 2.19 vs. the industry median of 1.91, Idemitsu Kosan Co has consistently been above 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 Altman Z-Score for an Oil & Gas company?
The median Altman Z-Score among Oil & Gas companies is 1.91, based on 897 companies in the industry. Companies in the top quartile (top 25%) have a Altman Z-Score significantly above this median, while those in the bottom quartile fall well below. However, Altman Z-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Idemitsu Kosan Co's current Altman Z-Score of 2.47 is 29.3% 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 Altman Z-Score mean?
A high Altman Z-Score can signal that a stock is expensive relative to its fundamentals. The Altman Z-score measures a company's bankruptcy risk. View historical data on Idemitsu Kosan Co and its competitors. For the Oil & Gas industry, the median Altman Z-Score is 1.91 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Idemitsu Kosan Co's current Altman Z-Score is 2.47, which is 13% above median its own 10-year median of 2.19. 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 Altman Z-Score is 2.47, which is 13% above median its 10-year median of 2.19 and 29.3% above the Oil & Gas industry median of 1.91. 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 Altman Z-Score calculated?
Altman Z-Score is calculated from a company's financial statements. For Idemitsu Kosan Co (IDKOF), the current Altman Z-Score is 2.47 as of Jun. 25, 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:
Altman Z-Score: 2.47 (13% above median its 10-year median of 2.19)
GF Value™: $6.72 vs. price of $8.01 (19.2% above fair value)
Industry Position: 29.3% above the Oil & Gas median (#355 of 897)
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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