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 OCF Margin % or its related term are showing as below:
TSE:6239'
s OCF Margin % Range Over the Past 10 Years
Min: -21.03 Med: 7.89 Max: 27.05
Current: 7.89
During the past 12 years, the highest OCF Margin % of Nagaoka International was 27.05%. The lowest was -21.03%. And the median was 7.89%.
TSE:6239's OCF Margin % is ranked worse than 61.89% of 908
companies
in the Oil & Gas industry
Industry Median: 13.89
vs TSE:6239: 7.89
Nagaoka International OCF Margin % Related Terms
Nagaoka International OCF Margin % Historical Data
* Premium members only.
The historical data trend for Nagaoka International's OCF 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: OCF Margin % Comparison
For the Oil & Gas Refining & Marketing subindustry, Nagaoka International's OCF Margin %, along with its competitors' market caps and OCF 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 OCF Margin % vs Oil & Gas Industry
For the Oil & Gas industry and Energy sector, Nagaoka International's OCF Margin % distribution charts can be found below:
* The bar in red indicates where Nagaoka International's OCF 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 OCF Margin % of 0.00% as of Dec. 2025. OCF Margin is the ratio of Cash Flow from Operations to Total Revenue. View historical data on Nagaoka International and its competitors. According to the industry distribution chart, Nagaoka International ranks #562 out of 908 companies in the Oil & Gas industry, placing it in the top 61.9%.
Is Nagaoka International's OCF Margin % too high?
Nagaoka International's current OCF Margin % is 0.00%. Based on the distribution chart, Nagaoka International ranks #562 out of 908 companies in the Oil & Gas industry, which is below 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 OCF Margin % compare to VLO and MPC?
According to the Oil & Gas industry distribution chart, Nagaoka International ranks #562 out of 908 companies for OCF Margin %. This places Nagaoka International in the lower half of its industry. The industry median OCF Margin % is 13.89. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good OCF Margin % for an Oil & Gas company?
The median OCF Margin % among Oil & Gas companies is 13.89, based on 908 companies in the industry. Companies in the top quartile (top 25%) have a OCF Margin % significantly above this median, while those in the bottom quartile fall well below. However, OCF 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 OCF Margin % mean?
A high OCF Margin % can signal that a stock is expensive relative to its fundamentals. OCF Margin is the ratio of Cash Flow from Operations to Total Revenue. View historical data on Nagaoka International and its competitors. For the Oil & Gas industry, the median OCF Margin % is 13.89 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Nagaoka International's current OCF 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 OCF 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 OCF Margin % calculated?
OCF Margin % is calculated from a company's financial statements. For Nagaoka International (TSE:6239), the current OCF 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:
OCF 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
OCF 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 
