BP Castrol KKTSE:5015 80 Operating Margin % is 10.61% as of Dec. 2025, which is 46% below its 10-year median of 19.63. GuruFocus rates TSE:5015 with a GF Score™ of 80/100 and a GF Value™ of 円1,119.32 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 916 Oil & Gas companies, BP Castrol KK ranks better than 64.41% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. BP Castrol KK's Operating Income for the
three
months ended in Dec. 2025 was 円427 Mil. BP Castrol KK's Revenue for the
three
months ended in Dec. 2025 was 円4,020 Mil. Therefore, BP Castrol KK's Operating Margin % for the quarter that ended in Dec. 2025 was 10.61%.
Warning Sign:
BP Castrol KK operating margin has been in a 5-year decline. The average rate of decline per year is -14.8%.
The historical rank and industry rank for BP Castrol KK's Operating Margin % or its related term are showing as below:
TSE:5015'
s Operating Margin % Range Over the Past 10 Years
Min: 7.77 Med: 19.63 Max: 24.96
Current: 12.83
TSE:5015's Operating Margin % is ranked better than 64.41% of 916
companies
in the Oil & Gas industry
Industry Median: 6.86
vs TSE:5015: 12.83
BP Castrol KK's 5-Year Average Operating Margin % Growth Rate was -14.80% per year.
BP Castrol KK (TSE:5015) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
Operating Margin % can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin % may decline. Often the Operating Margin % declines well before the company's Revenue or even profit decline. Therefore, Operating Margin % is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) were still rising. Investors who paid attention to Operating Margin % would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin % is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
BP Castrol KK Operating Margin % Related Terms
BP Castrol KK Operating Margin % Historical Data
* Premium members only.
The historical data trend for BP Castrol KK's Operating Margin % 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.
TSE:5015 vs VLO, MPC, PSX: Operating Margin % Comparison
For the Oil & Gas Refining & Marketing subindustry, BP Castrol KK's Operating Margin %, along with its competitors' market caps and Operating Margin % 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.
BP Castrol KK Operating Margin % vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, BP Castrol KK's Operating Margin % distribution charts can be found below:
* The bar in red indicates where BP Castrol KK's Operating Margin % falls into.
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.
BP Castrol KK's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as
* 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.
BP Castrol KK (TSE:5015) has a Operating Margin % of 10.61% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on BP Castrol KK and its competitors. This is 46% below median its historical median of 19.63. Over the past decade, BP Castrol KK's Operating Margin % has ranged from 7.77 to 24.96. According to the industry distribution chart, BP Castrol KK ranks #326 out of 916 companies in the Oil & Gas industry, placing it in the top 35.6%.
Is BP Castrol KK's Operating Margin % too high?
BP Castrol KK's current Operating Margin % of 10.61% is 46% below median its 10-year median of 19.63. Over the past 10 years, this metric has ranged from a low of 7.77 to a high of 24.96. The Oil & Gas industry median Operating Margin % is 6.86. BP Castrol KK's value of 10.61% is 54.7% above this industry median. Based on the distribution chart, BP Castrol KK ranks #326 out of 916 companies in the Oil & Gas industry, which is above the industry midpoint. Overall, BP Castrol KK has a GF Score™ of 80/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does BP Castrol KK's Operating Margin % compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, BP Castrol KK ranks #326 out of 916 companies for Operating Margin %. This puts BP Castrol KK in the upper half of its industry. The industry median Operating Margin % is 6.86. BP Castrol KK's value of 10.61% is 54.7% above this benchmark. Historically, BP Castrol KK's own Operating Margin % has ranged from 7.77 to 24.96 over the past decade. While the company's 10-year median is 19.63 vs. the industry median of 6.86, BP Castrol KK 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 Operating Margin % for an Oil & Gas company?
The median Operating Margin % among Oil & Gas companies is 6.86, based on 916 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. BP Castrol KK's current Operating Margin % of 10.61% is 54.7% 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 Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on BP Castrol KK and its competitors. For the Oil & Gas industry, the median Operating Margin % is 6.86 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. BP Castrol KK's current Operating Margin % is 10.61%, which is 46% below median its own 10-year median of 19.63. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is BP Castrol KK stock overvalued right now?
Based on GuruFocus' analysis, BP Castrol KK (TSE:5015) is currently considered Modestly Undervalued. The stock's GF Value™ is 円1,119.32, compared to a current price of 円1,008.00 — trading 9.9% below its estimated fair value. The current Operating Margin % is 10.61%, which is 46% below median its 10-year median of 19.63 and 54.7% above the Oil & Gas industry median of 6.86. BP Castrol KK's overall GF Score™ is 80/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For BP Castrol KK (TSE:5015), the current Operating Margin % is 10.61% as of Dec. 2025. 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 BP Castrol KK (TSE:5015) Overvalued in 2026?
Based on GuruFocus' analysis, BP Castrol KK stock appears to be undervalued.
The current stock price of 円1,008.00 is trading 9.9% below its estimated GF Value™ of 円1,119.32.
GuruFocus considers BP Castrol KK to be Modestly Undervalued.
Key valuation signals for TSE:5015:
Operating Margin %: 10.61% (46% below median its 10-year median of 19.63)
GF Value™: 円1,119.32 vs. price of 円1,008.00 (9.9% below fair value)
Industry Position: 54.7% above the Oil & Gas median (#326 of 916)
No single metric tells the full story. See the TSE:5015 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
BP Castrol KK engages in the development, manufacture, import, and sale of automotive lubricating oil in Japan. The company sells its product under the brand name BP brand and the Castrol brand. The BP brand is divided into Vervis, Vervis sport, and mini. The Castrol brand is the top brand of lubricant. Both the brands are used for the consumer business and professional business.
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