The Relative Strength Index (RSI) is a momentum oscillator that measures the speed and change of price movements. The RSI is most typically used on a 14-day period, measured on a scale from 0 to 100. Traditionally, an asset is considered overbought or overvalued when the RSI is above 70 and oversold or undervalued when it is below 30. A shorter period RSI is more reactive to recent price changes, so it can show early signs of reversals. 9-Day RSI is sometimes used together with 14-Day RSI in a two period divergence strategy.
The industry rank for Idemitsu Kosan Co's 9-Day RSI or its related term are showing as below:
IDKOF's 9-Day RSI is ranked better than 85% of 1053
companies
in the Oil & Gas industry
Industry Median: 40.87
vs IDKOF: 0.07
Idemitsu Kosan Co (OTCPK:IDKOF) 9-Day RSI Explanation
The Relative Strength Index (RSI), developed by J. Welles Wilder in his book “New Concepts in Technical Trading Systems.”, is a momentum oscillator that measures the speed and change of price movements. The RSI is most typically used on a 14-day period, measured on a scale from 0 to 100.
Traditionally, an asset is considered overbought or overvalued when the RSI is above 70 and oversold or undervalued when it is below 30. A RSI surpasses the 30 level indicates a bullish sign, when it slides below 70 level, it’s a bearish sign. This level can be adjusted depending on the security’s pattern and the market’s underlying trend. In an uptrend or bullish market, the RSI might range within a higher interval, investors could set the support level higher. If a downtrend or bearish market occurs, investors may need to lower the resistance level.
RSI can also be used in trading techniques to indicate the trading signal, such as Divergences and Swing Rejections. A shorter period RSI is more reactive to recent price changes, so it can show early signs of reversals. 9-Day RSI is sometimes used together with 14-Day RSI in a two period divergence strategy.
Idemitsu Kosan Co 9-Day RSI Related Terms
IDKOF vs VLO, MPC, PSX: 9-Day RSI Comparison
For the Oil & Gas Refining & Marketing subindustry, Idemitsu Kosan Co's 9-Day RSI, along with its competitors' market caps and 9-Day RSI 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 9-Day RSI vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Idemitsu Kosan Co's 9-Day RSI distribution charts can be found below:
* The bar in red indicates where Idemitsu Kosan Co's 9-Day RSI falls into.
Idemitsu Kosan Co (OTCPK:IDKOF) 9-Day RSI Calculation
The formula for calculating RSI is:
RSI
=
100
–
[ 100
/
( 1 + Average Gain
/
Average Loss )]
* Note that the formula uses a positive value for the average loss.
* 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.
Idemitsu Kosan Co (IDKOF) has a 9-Day RSI of 0.07 as of Jul. 01, 2026. According to the industry distribution chart, Idemitsu Kosan Co ranks #158 out of 1053 companies in the Oil & Gas industry, placing it in the top 15%.
Is Idemitsu Kosan Co's 9-Day RSI too high?
Idemitsu Kosan Co's current 9-Day RSI is 0.07. The Oil & Gas industry median 9-Day RSI is 40.87. Idemitsu Kosan Co's value of 0.07 is 99.8% below this industry median. Based on the distribution chart, Idemitsu Kosan Co ranks #158 out of 1053 companies in the Oil & Gas industry, which is in the top quartile — a strong position relative to peers. Overall, Idemitsu Kosan Co has a GF Score™ of 68/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Idemitsu Kosan Co's 9-Day RSI compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Idemitsu Kosan Co ranks #158 out of 1053 companies for 9-Day RSI. This places Idemitsu Kosan Co in the top 15% of its industry — outperforming the majority of peers. The industry median 9-Day RSI is 40.87. Idemitsu Kosan Co's value of 0.07 is 99.8% below this benchmark. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 9-Day RSI for an Oil & Gas company?
The median 9-Day RSI among Oil & Gas companies is 40.87, based on 1,053 companies in the industry. Companies in the top quartile (top 25%) have a 9-Day RSI significantly above this median, while those in the bottom quartile fall well below. However, 9-Day RSI should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Idemitsu Kosan Co's current 9-Day RSI of 0.07 is 99.8% 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 9-Day RSI mean?
A high 9-Day RSI can signal that a stock is expensive relative to its fundamentals. For the Oil & Gas industry, the median 9-Day RSI is 40.87 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Idemitsu Kosan Co's current 9-Day RSI is 0.07. 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 $6.74, compared to a current price of $7.50 — trading 11.3% above its estimated fair value. The current 9-Day RSI is 0.07 and 99.8% below the Oil & Gas industry median of 40.87. Idemitsu Kosan Co's overall GF Score™ is 68/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 9-Day RSI calculated?
9-Day RSI is calculated from a company's financial statements. For Idemitsu Kosan Co (IDKOF), the current 9-Day RSI is 0.07 as of Jul. 01, 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 $7.50 is trading 11.3% above its estimated GF Value™ of $6.74.
GuruFocus considers Idemitsu Kosan Co to be Modestly Overvalued.
Key valuation signals for IDKOF:
9-Day RSI: 0.07
GF Value™: $6.74 vs. price of $7.50 (11.3% above fair value)
Industry Position: 99.8% below the Oil & Gas median (#158 of 1053)
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.
68GF Score
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9-Day RSI is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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