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.
Polyplex (Thailand) PCL Operating Margin % Related Terms
Polyplex (Thailand) PCL Operating Margin % Historical Data
* Premium members only.
The historical data trend for Polyplex (Thailand) PCL'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.
STU:PKW vs LIN, SHW, ECL: Operating Margin % Comparison
For the Specialty Chemicals subindustry, Polyplex (Thailand) PCL'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.
Polyplex (Thailand) PCL Operating Margin % vs Chemicals Industry
For the Chemicals industry and Basic Materials sector, Polyplex (Thailand) PCL's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Polyplex (Thailand) PCL'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.
Polyplex (Thailand) PCL'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.
Polyplex (Thailand) PCL (STU:PKW) has a Operating Margin % of -0.17% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Polyplex (Thailand) PCL and its competitors. Over the past decade, Polyplex (Thailand) PCL's Operating Margin % has ranged from 1.88 to 21.44. According to the industry distribution chart, Polyplex (Thailand) PCL ranks #1138 out of 1585 companies in the Chemicals industry, placing it in the top 71.8%.
Is Polyplex (Thailand) PCL's Operating Margin % too high?
Polyplex (Thailand) PCL's current Operating Margin % is -0.17%. Over the past 10 years, this metric has ranged from a low of 1.88 to a high of 21.44. Based on the distribution chart, Polyplex (Thailand) PCL ranks #1138 out of 1585 companies in the Chemicals industry, which is below the industry midpoint. Overall, Polyplex (Thailand) PCL has a GF Score™ of 65/100, reflecting its overall financial health beyond just this single metric.
How does Polyplex (Thailand) PCL's Operating Margin % compare to LIN and SHW?
According to the Chemicals industry distribution chart, Polyplex (Thailand) PCL ranks #1138 out of 1585 companies for Operating Margin %. This places Polyplex (Thailand) PCL in the lower half of its industry. The industry median Operating Margin % is 6.02. Historically, Polyplex (Thailand) PCL's own Operating Margin % has ranged from 1.88 to 21.44 over the past decade. 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 6.02, based on 1,585 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. 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 Polyplex (Thailand) PCL and its competitors. For the Chemicals industry, the median Operating Margin % is 6.02 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Polyplex (Thailand) PCL's current Operating Margin % is -0.17%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Polyplex (Thailand) PCL stock overvalued right now?
Polyplex (Thailand) PCL (STU:PKW) has a current Operating Margin % of -0.17%. The stock's GF Value™ is €0.24, compared to a current price of €0.37 — trading 55% above its estimated fair value. The current Operating Margin % is -0.17%. Polyplex (Thailand) PCL's overall GF Score™ is 65/100 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 Polyplex (Thailand) PCL (STU:PKW), the current Operating Margin % is -0.17% 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 Polyplex (Thailand) PCL (STU:PKW) Overvalued in 2026?
Based on GuruFocus' analysis, Polyplex (Thailand) PCL stock appears to be overvalued.
The current stock price of €0.37 is trading 55% above its estimated GF Value™ of €0.24.
Key valuation signals for STU:PKW:
Operating Margin %: -0.17%
GF Value™: €0.24 vs. price of €0.37 (55% above fair value)
No single metric tells the full story. See the STU:PKW stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Polyplex (Thailand) PCL is a Thailand-based company which is engaged in the manufacturing and distribution of polyester films, metallized films, extrusion coated films, cast polypropylene films, silicone coated films and PET resins. The company produces a various line of products such as Bopet films, CPP (Cast Polypropylene) films, Blown PP films, one or two-sided coated release films and extrusion coated film under the banner of Sarafil, Saracote, and Saralam. It has a single industry segment being the manufacture and distribution of polyester films, metallised films, extrusion coated films, cast polypropylene films, silicone coated films, blown films, holographic films, and PET resins. Geographically, it generates a majority of revenue from the Overseas countries.
65GF Score
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