Sansei CoTSE:6307 82 Operating Margin % is 18.27% as of Mar. 2026, which is 80% above its 10-year median of 10.14. GuruFocus rates TSE:6307 with a GF Score™ of 82/100 and a GF Value™ of 円499.95 (Modestly Undervalued). The stock has 1 warning sign investors should review. Among 1,070 Business Services companies, Sansei Co ranks better than 78.22% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. Sansei Co's Operating Income for the
six
months ended in Mar. 2026 was 円805 Mil. Sansei Co's Revenue for the
six
months ended in Mar. 2026 was 円4,408 Mil. Therefore, Sansei Co's Operating Margin % for the quarter that ended in Mar. 2026 was 18.27%.
Good Sign:
Sansei Co Ltd operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for Sansei Co's Operating Margin % or its related term are showing as below:
TSE:6307'
s Operating Margin % Range Over the Past 10 Years
Min: 6.72 Med: 10.14 Max: 14.84
Current: 14.84
TSE:6307's Operating Margin % is ranked better than 78.22% of 1070
companies
in the Business Services industry
Industry Median: 6.275
vs TSE:6307: 14.84
Sansei Co's 5-Year Average Operating Margin % Growth Rate was 5.00% per year.
Sansei Co's Operating Income for the
six
months ended in Mar. 2026 was 円805 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was 円1,046 Mil.
Sansei Co (TSE:6307) 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.
Sansei Co Operating Margin % Related Terms
Sansei Co Operating Margin % Historical Data
* Premium members only.
The historical data trend for Sansei Co'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:6307 vs CTAS, CPRT, GPN: Operating Margin % Comparison
For the Specialty Business Services subindustry, Sansei Co'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.
Sansei Co Operating Margin % vs Business Services Industry
For the Business Services industry and Industrials sector, Sansei Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Sansei Co'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.
Sansei Co's Operating Margin % for the fiscal year that ended in Mar. 2026 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.
Sansei Co (TSE:6307) has a Operating Margin % of 18.27% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Sansei Co and its competitors. This is 80% above median its historical median of 10.14. Over the past decade, Sansei Co's Operating Margin % has ranged from 6.72 to 14.84. According to the industry distribution chart, Sansei Co ranks #233 out of 1070 companies in the Business Services industry, placing it in the top 21.8%.
Is Sansei Co's Operating Margin % too high?
Sansei Co's current Operating Margin % of 18.27% is 80% above median its 10-year median of 10.14. Over the past 10 years, this metric has ranged from a low of 6.72 to a high of 14.84. The Business Services industry median Operating Margin % is 6.28. Sansei Co's value of 18.27% is 191.2% above this industry median. Based on the distribution chart, Sansei Co ranks #233 out of 1070 companies in the Business Services industry, which is in the top quartile — a strong position relative to peers. Overall, Sansei Co has a GF Score™ of 82/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Sansei Co's Operating Margin % compare to CTAS and CPRT?
According to the Business Services industry distribution chart, Sansei Co ranks #233 out of 1070 companies for Operating Margin %. This places Sansei Co in the top 22% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 6.28. Sansei Co's value of 18.27% is 191.2% above this benchmark. Historically, Sansei Co's own Operating Margin % has ranged from 6.72 to 14.84 over the past decade. While the company's 10-year median is 10.14 vs. the industry median of 6.28, Sansei Co 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 a Business Services company?
The median Operating Margin % among Business Services companies is 6.28, based on 1,070 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. Sansei Co's current Operating Margin % of 18.27% is 191.2% 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 Sansei Co and its competitors. For the Business Services industry, the median Operating Margin % is 6.28 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Sansei Co's current Operating Margin % is 18.27%, which is 80% above median its own 10-year median of 10.14. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sansei Co stock overvalued right now?
Based on GuruFocus' analysis, Sansei Co (TSE:6307) is currently considered Modestly Undervalued. The stock's GF Value™ is 円499.95, compared to a current price of 円415.00 — trading 17% below its estimated fair value. The current Operating Margin % is 18.27%, which is 80% above median its 10-year median of 10.14 and 191.2% above the Business Services industry median of 6.28. Sansei Co's overall GF Score™ is 82/100 with 1 warning sign 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 Sansei Co (TSE:6307), the current Operating Margin % is 18.27% 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 Sansei Co (TSE:6307) Overvalued in 2026?
Based on GuruFocus' analysis, Sansei Co stock appears to be undervalued.
The current stock price of 円415.00 is trading 17% below its estimated GF Value™ of 円499.95.
GuruFocus considers Sansei Co to be Modestly Undervalued.
Key valuation signals for TSE:6307:
Operating Margin %: 18.27% (80% above median its 10-year median of 10.14)
GF Value™: 円499.95 vs. price of 円415.00 (17% below fair value)
Industry Position: 191.2% above the Business Services median (#233 of 1070)
No single metric tells the full story. See the TSE:6307 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Sansei Co Ltd designs, manufactures, installs, maintains, repairs gondolas. It also provides cleaning services for windows, stage equipment, mechanical play, the mobile device scaffolding, curtain suspension apparatus and electric gates.
82GF Score
Get the complete analysis for TSE:6307
Operating 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:6307 has been successfully added to your 
