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Idemitsu Kosan CoIDKOF 73 3-Year Share Buyback Ratio is 6.00 as of Mar. 2026. GuruFocus rates IDKOF with a GF Score™ of 73/100 and a GF Value™ of $6.73 (Modestly Overvalued). The stock has 4 warning signs investors should review. Among 685 Oil & Gas companies, Idemitsu Kosan Co ranks better than 97.37% on this metric.
Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.
3-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past three years. It is calculated as the annualized percentage change in shares outstanding from three years ago to the current year. A positive ratio may indicate share buybacks over the period, while a zero or negative ratio may reflect no repurchases or potential share issuance. Idemitsu Kosan Co's current 3-Year Share Buyback Ratio was 6.00%.
The historical rank and industry rank for Idemitsu Kosan Co's 3-Year Share Buyback Ratio or its related term are showing as below:
IDKOF'
s 3-Year Share Buyback Ratio Range Over the Past 10 Years
Min: -22.9 Med: 0 Max: 6.3
Current: 6
During the past 13 years, Idemitsu Kosan Co's highest 3-Year Share Buyback Ratio was 6.30%. The lowest was -22.90%. And the median was 0.00%.
IDKOF's 3-Year Share Buyback Ratio is ranked better than 97.37% of 685
companies
in the Oil & Gas industry
Industry Median: -3.5
vs IDKOF: 6.00
Idemitsu Kosan Co (OTCPK:IDKOF) 3-Year Share Buyback Ratio Explanation
A negative number means the company might be issuing new shares. A positive number indicates that the company is buying back shares.
Be Aware
Investors usually like share buybacks. But as pointed by Warren Buffett, only if a company buys back shares at the prices below the stock's intrinsic value, it rewards remaining shareholders. If a company buys its overvalued stocks back, it destroys shareholder value.
Idemitsu Kosan Co 3-Year Share Buyback Ratio Related Terms
IDKOF vs MPC, VLO, PSX: 3-Year Share Buyback Ratio Comparison
For the Oil & Gas Refining & Marketing subindustry, Idemitsu Kosan Co's 3-Year Share Buyback Ratio, along with its competitors' market caps and 3-Year Share Buyback 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 3-Year Share Buyback Ratio vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Idemitsu Kosan Co's 3-Year Share Buyback Ratio distribution charts can be found below:
* The bar in red indicates where Idemitsu Kosan Co's 3-Year Share Buyback Ratio falls into.
Idemitsu Kosan Co 3-Year Share Buyback Ratio Calculation
This is the annualized percentage change in shares outstanding from three years ago to the current year. The annualized percentage change is calculated with expontential compound based on the latest four years of annual data on Shares Outstanding (EOP).
Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the average dividends per share growth rate.
What does a 3-Year Share Buyback Ratio of 6.00 mean?
Idemitsu Kosan Co (IDKOF) has a 3-Year Share Buyback Ratio of 6.00 as of Mar. 2026. The 3-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past three years. It is calculated as the annualized percentage change in shares outstanding from three years ago to the current year. View historical data for Idemitsu Kosan Co and its competitors. According to the industry distribution chart, Idemitsu Kosan Co ranks #18 out of 685 companies in the Oil & Gas industry, placing it in the top 2.6%.
Is Idemitsu Kosan Co's 3-Year Share Buyback Ratio too high?
Idemitsu Kosan Co's current 3-Year Share Buyback Ratio is 6.00. Based on the distribution chart, Idemitsu Kosan Co ranks #18 out of 685 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 73/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Idemitsu Kosan Co's 3-Year Share Buyback Ratio compare to MPC and VLO?
According to the Oil & Gas industry distribution chart, Idemitsu Kosan Co ranks #18 out of 685 companies for 3-Year Share Buyback Ratio. This places Idemitsu Kosan Co in the top 3% of its industry — outperforming the majority of peers. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-Year Share Buyback Ratio for an Oil & Gas company?
A good 3-Year Share Buyback Ratio depends on the Oil & Gas industry context. However, 3-Year Share Buyback Ratio 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 3-Year Share Buyback Ratio mean?
A high 3-Year Share Buyback Ratio can signal that a stock is expensive relative to its fundamentals. The 3-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past three years. It is calculated as the annualized percentage change in shares outstanding from three years ago to the current year. View historical data for Idemitsu Kosan Co and its competitors. Idemitsu Kosan Co's current 3-Year Share Buyback Ratio is 6.00. 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 $6.73, compared to a current price of $7.65 — trading 13.7% above its estimated fair value. The current 3-Year Share Buyback Ratio is 6.00. Idemitsu Kosan Co's overall GF Score™ is 73/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year Share Buyback Ratio calculated?
3-Year Share Buyback Ratio is calculated from a company's financial statements. For Idemitsu Kosan Co (IDKOF), the current 3-Year Share Buyback Ratio is 6.00 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 13.7% above its estimated GF Value™ of $6.73.
GuruFocus considers Idemitsu Kosan Co to be Modestly Overvalued.
Key valuation signals for IDKOF:
3-Year Share Buyback Ratio: 6.00
GF Value™: $6.73 vs. price of $7.65 (13.7% 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.
73GF Score
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