Sekisui Kasei Co (TSE:4228) Operating Margin %: 3.67% (As of Mar. 2026) — 84% Above Median

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TSE:4228 Sekisui Kasei Co Ltd TSE:4228
53 GF Score
Price 円507.00
GF Value 円359.04
Valuation Significantly Overvalued
! 9 Warning Signs
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What is Sekisui Kasei Co Operating Margin %?

Sekisui Kasei Co TSE:4228 -2.69% 53 Operating Margin % is 3.67% as of Mar. 2026, which is 84% above its 10-year median of 2.00. GuruFocus rates TSE:4228 with a GF Score™ of 53/100 and a GF Value™ of 円359.04 (Significantly Overvalued). The stock has 9 warning signs investors should review. Among 1,577 Chemicals companies, Sekisui Kasei Co ranks worse than 70.32% on this metric.

Operating Margin % is calculated as Operating Income divided by its Revenue. Sekisui Kasei Co's Operating Income for the six months ended in Mar. 2026 was 円1,772 Mil. Sekisui Kasei Co's Revenue for the six months ended in Mar. 2026 was 円48,220 Mil. Therefore, Sekisui Kasei Co's Operating Margin % for the quarter that ended in Mar. 2026 was 3.67%.

Warning Sign:

Sekisui Kasei Co Ltd operating margin has been in a 5-year decline. The average rate of decline per year is -3.7%.

The historical rank and industry rank for Sekisui Kasei Co's Operating Margin % or its related term are showing as below:

TSE:4228' s Operating Margin % Range Over the Past 10 Years
Min: 0.47   Med: 2   Max: 5.28
Current: 2.24


TSE:4228's Operating Margin % is ranked worse than
70.32% of 1577 companies
in the Chemicals industry
Industry Median: 6.03 vs TSE:4228: 2.24

Sekisui Kasei Co's 5-Year Average Operating Margin % Growth Rate was -3.70% per year.

Sekisui Kasei Co's Operating Income for the six months ended in Mar. 2026 was 円1,772 Mil. Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was 円2,552 Mil.


Sekisui Kasei Co  (TSE:4228) 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 Nokia’s 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.


Sekisui Kasei Co Operating Margin % Related Terms


Sekisui Kasei Co Operating Margin % Historical Data

* Premium members only.

The historical data trend for Sekisui Kasei 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.

Sekisui Kasei Co Operating Margin % Chart

Sekisui Kasei Co Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
Operating Margin %
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1.25 0.64 0.97 0.47 2.24

Sekisui Kasei Co Semi-Annual Data
Sep16 Mar17 Sep17 Mar18 Sep18 Mar19 Sep19 Mar20 Sep20 Mar21 Sep21 Mar22 Sep22 Mar23 Sep23 Mar24 Sep24 Mar25 Sep25 Mar26
Operating Margin % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 1.41 0.11 0.83 1.19 3.67

TSE:4228 vs LIN, SHW, ECL: Operating Margin % Comparison

For the Specialty Chemicals subindustry, Sekisui Kasei 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.


Sekisui Kasei Co Operating Margin % vs Chemicals Industry

For the Chemicals industry and Basic Materials sector, Sekisui Kasei Co's Operating Margin % distribution charts can be found below:

* The bar in red indicates where Sekisui Kasei Co's Operating Margin % falls into.


TSE:4228
53GF Score
Sekisui Kasei Co Ltd TSE:4228
Operating Margin % is just one metric. See GF Score™, valuation, warning signs, and more.
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Sekisui Kasei Co Operating Margin % Calculation

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.

Sekisui Kasei Co's Operating Margin % for the fiscal year that ended in Mar. 2026 is calculated as

Operating Margin %=Operating Income (A: Mar. 2026 ) / Revenue (A: Mar. 2026 )
=2552 / 113935
=2.24 %

Sekisui Kasei Co's Operating Margin % for the quarter that ended in Mar. 2026 is calculated as

Operating Margin %=Operating Income (Q: Mar. 2026 ) / Revenue (Q: Mar. 2026 )
=1772 / 48220
=3.67 %

* 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.

Frequently Asked Questions Learn more about Operating Margin % →
What does a Operating Margin % of 3.67% mean?
Sekisui Kasei Co (TSE:4228) has a Operating Margin % of 3.67% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Sekisui Kasei Co and its competitors. This is 84% above median its historical median of 2.00. Over the past decade, Sekisui Kasei Co's Operating Margin % has ranged from 0.47 to 5.28. According to the industry distribution chart, Sekisui Kasei Co ranks #1109 out of 1577 companies in the Chemicals industry, placing it in the top 70.3%.
Is Sekisui Kasei Co's Operating Margin % too high?
Sekisui Kasei Co's current Operating Margin % of 3.67% is 84% above median its 10-year median of 2.00. Over the past 10 years, this metric has ranged from a low of 0.47 to a high of 5.28. The Chemicals industry median Operating Margin % is 6.03. Sekisui Kasei Co's value of 3.67% is 39.1% below this industry median. Based on the distribution chart, Sekisui Kasei Co ranks #1109 out of 1577 companies in the Chemicals industry, which is below the industry midpoint. Overall, Sekisui Kasei Co has a GF Score™ of 53/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Sekisui Kasei Co's Operating Margin % compare to LIN and SHW?
According to the Chemicals industry distribution chart, Sekisui Kasei Co ranks #1109 out of 1577 companies for Operating Margin %. This places Sekisui Kasei Co in the lower half of its industry. The industry median Operating Margin % is 6.03. Sekisui Kasei Co's value of 3.67% is 39.1% below this benchmark. Historically, Sekisui Kasei Co's own Operating Margin % has ranged from 0.47 to 5.28 over the past decade. While the company's 10-year median is 2.00 vs. the industry median of 6.03, Sekisui Kasei Co has consistently been below 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 Chemicals company?
The median Operating Margin % among Chemicals companies is 6.03, based on 1,577 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. Sekisui Kasei Co's current Operating Margin % of 3.67% is 39.1% below 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 Sekisui Kasei Co and its competitors. For the Chemicals industry, the median Operating Margin % is 6.03 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Sekisui Kasei Co's current Operating Margin % is 3.67%, which is 84% above median its own 10-year median of 2.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Sekisui Kasei Co stock overvalued right now?
Based on GuruFocus' analysis, Sekisui Kasei Co (TSE:4228) is currently considered Significantly Overvalued. The stock's GF Value™ is 円359.04, compared to a current price of 円507.00 — trading 41.2% above its estimated fair value. The current Operating Margin % is 3.67%, which is 84% above median its 10-year median of 2.00 and 39.1% below the Chemicals industry median of 6.03. Sekisui Kasei Co's overall GF Score™ is 53/100 with 9 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 Sekisui Kasei Co (TSE:4228), the current Operating Margin % is 3.67% 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 Sekisui Kasei Co (TSE:4228) Overvalued in 2026?

Based on GuruFocus' analysis, Sekisui Kasei Co stock appears to be overvalued. The current stock price of 円507.00 is trading 41.2% above its estimated GF Value™ of 円359.04. GuruFocus considers Sekisui Kasei Co to be Significantly Overvalued.

Key valuation signals for TSE:4228:

  • Operating Margin %: 3.67% (84% above median its 10-year median of 2.00)
  • GF Value™: 円359.04 vs. price of 円507.00 (41.2% above fair value)
  • GF Score™: 53/100 with 9 warning signs
  • Industry Position: 39.1% below the Chemicals median (#1109 of 1577)

No single metric tells the full story. See the TSE:4228 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Sekisui Kasei Co Business Description

Address 2-4-4 Nishitenma, Kita-ku, Osaka, JPN, 530-8565
Sekisui Kasei Co Ltd is a plastic provider solution company. The company is engaged in manufacture and sale of foamed plastic and other plastic products. It operates in two segments, Human Life, and Industry. The products in human life segment include Eslen beads, Eslen sheet, Eslen wood, Interforms, ES molded products such as ES Dan mat, Eslen block used in agricultural and fishery materials, food packaging materials, distribution materials, construction materials, civil engineering materials. The products in Industry segment are Pioceran, Literon, Neomicrolen, Serpet, Techpolymer, Technogel, Techheater, Elastil, Formac, ST-LAYER used in automotive materials, vehicle parts packaging, industrial materials, industrial packaging, electronic component materials, medical and health materials.
53GF Score

Get the complete analysis for TSE:4228

Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

円507.00
Price
円359.04
GF Value