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.
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.
The historical rank and industry rank for Nagaoka International's Net Margin % or its related term are showing as below:
TSE:6239'
s Net Margin % Range Over the Past 10 Years
Min: -26.07 Med: 10.74 Max: 12.56
Current: 8.57
TSE:6239's Net Margin % is ranked better than 66.19% of 917
companies
in the Oil & Gas industry
Industry Median: 3.46
vs TSE:6239: 8.57
Nagaoka International (TSE:6239) Net Margin % Explanation
Although Net Income and Earnings-per-Share (EPS) are the most widely used parameter in measuring a company's profitability and valuation, it is the least reliable. The reason is that reported earnings can be manipulated easily by adjusting any numbers such as Depreciation, Depletion and Amotorization and non-recurring items.
But the long term trend of the net margin is a good indicator of the competitiveness and health of the business.
Nagaoka International Net Margin % Related Terms
Nagaoka International Net Margin % Historical Data
* Premium members only.
The historical data trend for Nagaoka International's Net 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:6239 vs VLO, MPC, PSX: Net Margin % Comparison
For the Oil & Gas Refining & Marketing subindustry, Nagaoka International's Net Margin %, along with its competitors' market caps and Net 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.
Nagaoka International Net Margin % vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Nagaoka International's Net Margin % distribution charts can be found below:
* The bar in red indicates where Nagaoka International's Net Margin % falls into.
* 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.
Nagaoka International (TSE:6239) has a Net Margin % of 0.00% as of Dec. 2025. Net margin is the ratio of total net income to net sales. View historical data on Nagaoka International and its competitors. According to the industry distribution chart, Nagaoka International ranks #310 out of 917 companies in the Oil & Gas industry, placing it in the top 33.8%.
Is Nagaoka International's Net Margin % too high?
Nagaoka International's current Net Margin % is 0.00%. Based on the distribution chart, Nagaoka International ranks #310 out of 917 companies in the Oil & Gas industry, which is above the industry midpoint. Overall, Nagaoka International has a GF Score™ of 63/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Nagaoka International's Net Margin % compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Nagaoka International ranks #310 out of 917 companies for Net Margin %. This puts Nagaoka International in the upper half of its industry. The industry median Net Margin % is 3.46. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Net Margin % for an Oil & Gas company?
The median Net Margin % among Oil & Gas companies is 3.46, based on 917 companies in the industry. Companies in the top quartile (top 25%) have a Net Margin % significantly above this median, while those in the bottom quartile fall well below. However, Net Margin % 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 Net Margin % mean?
A high Net Margin % can signal that a stock is expensive relative to its fundamentals. Net margin is the ratio of total net income to net sales. View historical data on Nagaoka International and its competitors. For the Oil & Gas industry, the median Net Margin % is 3.46 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Nagaoka International's current Net Margin % is 0.00%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Nagaoka International stock overvalued right now?
Based on GuruFocus' analysis, Nagaoka International (TSE:6239) is currently considered Significantly Overvalued. The stock's GF Value™ is 円889.34, compared to a current price of 円1,322.00 — trading 48.6% above its estimated fair value. The current Net Margin % is 0.00%. Nagaoka International's overall GF Score™ is 63/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Net Margin % calculated?
Net Margin % is calculated from a company's financial statements. For Nagaoka International (TSE:6239), the current Net Margin % is 0.00% 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 Nagaoka International (TSE:6239) Overvalued in 2026?
Based on GuruFocus' analysis, Nagaoka International stock appears to be overvalued.
The current stock price of 円1,322.00 is trading 48.6% above its estimated GF Value™ of 円889.34.
GuruFocus considers Nagaoka International to be Significantly Overvalued.
Key valuation signals for TSE:6239:
Net Margin %: 0.00%
GF Value™: 円889.34 vs. price of 円1,322.00 (48.6% above fair value)
No single metric tells the full story. See the TSE:6239 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Nagaoka International Corp is engaged in the manufacturing and sale of equipment and systems for energy and water-related industries. The company has two reportable segments: energy-related business and water-related business. The energy-related business focuses on producing screen internals and internal equipment for oil refineries and petrochemical plants. The water-related business is involved in the manufacture and sale of water intake screens, Chemiless and Hisys systems, and the construction of water treatment plants. It generates the majority of its revenue from the Energy-related business segment.
63GF Score
Get the complete analysis for TSE:6239
Net Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
TSE:6239 has been successfully added to your 
