IDKOF (Idemitsu Kosan Co) Profitability Rank: 7 (As of Mar. 2026) — 40% Above Median

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

IDKOF Idemitsu Kosan Co Ltd IDKOF
72 GF Score
Price $7.65
GF Value $6.72
Valuation Modestly Overvalued
! 4 Warning Signs
View Full Analysis

What is Idemitsu Kosan Co Profitability Rank?

Idemitsu Kosan Co IDKOF 72 Profitability Rank is 7 as of Mar. 2026, which is 40% above its 10-year median of 5.00. GuruFocus rates IDKOF with a GF Score™ of 72/100 and a GF Value™ of $6.72 (Modestly Overvalued). The stock has 4 warning signs investors should review.

Idemitsu Kosan Co has the Profitability Rank of 7.

GuruFocus Profitability Rank ranks how profitable a company is and how likely the company's business will stay that way. It is rated on a scale of 1 to 10 and is based on these factors:

1. Operating Margin %
2. Piotroski F-Score
3. Trend of the Operating Margin % (5-year average). The company with an uptrend profit margin has a higher rank.
4. Consistency of the profitability
5. Predictability Rank

A higher score indicates superior profitability, with companies rated 7 or above considered to have more robust and sustainable profit generation. Conversely, a score of 3 or lower suggests challenges in generating consistent profits.

Idemitsu Kosan Co's Operating Margin % for the quarter that ended in Mar. 2026 was 8.12%. As of today, Idemitsu Kosan Co's Piotroski F-Score is 6.


Idemitsu Kosan Co Profitability Rank Related Terms


IDKOF vs VLO, MPC, PSX: Profitability Rank Comparison

For the Oil & Gas Refining & Marketing subindustry, Idemitsu Kosan Co's Profitability Rank, along with its competitors' market caps and Profitability Rank 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 Profitability Rank vs Oil & Gas Industry

For the Oil & Gas industry and Energy sector, Idemitsu Kosan Co's Profitability Rank distribution charts can be found below:

* The bar in red indicates where Idemitsu Kosan Co's Profitability Rank falls into.


IDKOF
72GF Score
Idemitsu Kosan Co Ltd IDKOF
Profitability Rank is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Idemitsu Kosan Co Profitability Rank Calculation

GuruFocus Profitability Rank ranks how profitable a company is and how likely the company's business will stay that way.

The rank is rated on a scale of 1 to 10. A higher score indicates superior profitability, with companies rated 7 or above considered to have more robust and sustainable profit generation. Conversely, a score of 3 or lower suggests challenges in generating consistent profits.

Idemitsu Kosan Co has the Profitability Rank of 7.

Profitability Rank is not directly related to the Financial Strength. But if a company is consistently profitable, its financial strength will be stronger.

Profitability Rank is based on these factors:

1. Operating Margin %

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.

Idemitsu Kosan Co's Operating Margin % for the quarter that ended in Mar. 2026 is calculated as:

Operating Margin %=Operating Income (Q: Mar. 2026 ) / Revenue (Q: Mar. 2026 )
=1106.063 / 13620.269
=8.12 %

* 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.

2. Piotroski F-Score

The zones of discrimination were as such:

Good or high score = 8 or 9
Bad or low score = 0 or 1

Idemitsu Kosan Co has an F-score of 6 indicating the company's financial situation is typical for a stable company.

3. Trend of the Operating Margin % (5-year average). The company with an uptrend profit margin has a higher rank.

Warning Sign:

Idemitsu Kosan Co Ltd operating margin has been in a 5-year decline. The average rate of decline per year is -11.9%.

4. Consistency of the profitability

5. Predictability Rank

Frequently Asked Questions Learn more about Profitability Rank →
What does a Profitability Rank of 7 mean?
Idemitsu Kosan Co (IDKOF) has a Profitability Rank of 7 as of Mar. 2026. Profitability and Growth ranks a company based on its profit margins and earnings growth. View historical data on Idemitsu Kosan Co and its competitors. This is 40% above median its historical median of 5.00. Over the past decade, Idemitsu Kosan Co's Profitability Rank has ranged from 3.00 to 7.00.
Is Idemitsu Kosan Co's Profitability Rank too high?
Idemitsu Kosan Co's current Profitability Rank of 7 is 40% above median its 10-year median of 5.00. Over the past 10 years, this metric has ranged from a low of 3.00 to a high of 7.00. Overall, Idemitsu Kosan Co has a GF Score™ of 72/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Idemitsu Kosan Co's Profitability Rank compare to VLO and MPC?
Idemitsu Kosan Co's Profitability Rank of 7 can be compared against companies in the Oil & Gas industry. Historically, Idemitsu Kosan Co's own Profitability Rank has ranged from 3.00 to 7.00 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 Profitability Rank for an Oil & Gas company?
A good Profitability Rank depends on the Oil & Gas industry context. However, Profitability Rank 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 Profitability Rank mean?
A high Profitability Rank can signal that a stock is expensive relative to its fundamentals. Profitability and Growth ranks a company based on its profit margins and earnings growth. View historical data on Idemitsu Kosan Co and its competitors. Idemitsu Kosan Co's current Profitability Rank is 7, which is 40% above median its own 10-year median of 5.00. 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 $6.72, compared to a current price of $7.65 — trading 13.8% above its estimated fair value. The current Profitability Rank is 7, which is 40% above median its 10-year median of 5.00. Idemitsu Kosan Co's overall GF Score™ is 72/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Profitability Rank calculated?
Profitability Rank is calculated from a company's financial statements. For Idemitsu Kosan Co (IDKOF), the current Profitability Rank is 7 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 $7.65 is trading 13.8% above its estimated GF Value™ of $6.72. GuruFocus considers Idemitsu Kosan Co to be Modestly Overvalued.

Key valuation signals for IDKOF:

  • Profitability Rank: 7 (40% above median its 10-year median of 5.00)
  • GF Value™: $6.72 vs. price of $7.65 (13.8% above fair value)
  • GF Score™: 72/100 with 4 warning signs

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 Business Description

Industry EnergyOil & Gas
Address 1-2-1 Otemachi, Chiyoda-ku, Tokyo, JPN, 100-8321
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.
72GF Score

Get the complete analysis for IDKOF

Profitability Rank is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$7.65
Price
$6.72
GF Value