National Polymer Industries PLC operating margin has been in a 5-year decline. The average rate of decline per year is -5.8%.
The historical rank and industry rank for National Polymer Industries's Operating Margin % or its related term are showing as below:
DHA:NPOLYMER'
s Operating Margin % Range Over the Past 10 Years
Min: 8.32 Med: 10.34 Max: 14.8
Current: 14.8
DHA:NPOLYMER's Operating Margin % is ranked better than 83.42% of 1767
companies
in the Construction industry
Industry Median: 5.89
vs DHA:NPOLYMER: 14.80
National Polymer Industries (DHA:NPOLYMER) 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.
National Polymer Industries Operating Margin % Related Terms
National Polymer Industries Operating Margin % Historical Data
* 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.
National Polymer Industries Operating Margin % Chart
DHA:NPOLYMER vs TT, JCI, CARR: Operating Margin % Comparison
For the Building Products & Equipment subindustry, National Polymer Industries'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.
National Polymer Industries Operating Margin % vs Construction Industry
For the Construction industry and Industrials sector, National Polymer Industries's Operating Margin % distribution charts can be found below:
* The bar in red indicates where National Polymer Industries's Operating Margin % falls into.
National Polymer Industries 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.
National Polymer Industries's Operating Margin % for the fiscal year that ended in Jun. 2025 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.
National Polymer Industries (DHA:NPOLYMER) has a Operating Margin % of 4.73% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on National Polymer Industries and its competitors. This is 54% below median its historical median of 10.34. Over the past decade, National Polymer Industries' Operating Margin % has ranged from 8.32 to 14.80. According to the industry distribution chart, National Polymer Industries ranks #293 out of 1767 companies in the Construction industry, placing it in the top 16.6%.
Is National Polymer Industries' Operating Margin % too high?
National Polymer Industries' current Operating Margin % of 4.73% is 54% below median its 10-year median of 10.34. Over the past 10 years, this metric has ranged from a low of 8.32 to a high of 14.80. The Construction industry median Operating Margin % is 5.89. National Polymer Industries' value of 4.73% is 19.7% below this industry median. Based on the distribution chart, National Polymer Industries ranks #293 out of 1767 companies in the Construction industry, which is in the top quartile — a strong position relative to peers. Overall, National Polymer Industries has a GF Score™ of 68/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does National Polymer Industries' Operating Margin % compare to TT and JCI?
According to the Construction industry distribution chart, National Polymer Industries ranks #293 out of 1767 companies for Operating Margin %. This places National Polymer Industries in the top 17% of its industry — outperforming the majority of peers. The industry median Operating Margin % is 5.89. National Polymer Industries' value of 4.73% is 19.7% below this benchmark. Historically, National Polymer Industries' own Operating Margin % has ranged from 8.32 to 14.80 over the past decade. While the company's 10-year median is 10.34 vs. the industry median of 5.89, National Polymer Industries 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 Construction company?
The median Operating Margin % among Construction companies is 5.89, based on 1,767 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. National Polymer Industries's current Operating Margin % of 4.73% is 19.7% 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 National Polymer Industries and its competitors. For the Construction industry, the median Operating Margin % is 5.89 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. National Polymer Industries's current Operating Margin % is 4.73%, which is 54% below median its own 10-year median of 10.34. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is National Polymer Industries stock overvalued right now?
Based on GuruFocus' analysis, National Polymer Industries (DHA:NPOLYMER) is currently considered Significantly Overvalued. The stock's GF Value™ is BDT17.21, compared to a current price of BDT32.50 — trading 88.8% above its estimated fair value. The current Operating Margin % is 4.73%, which is 54% below median its 10-year median of 10.34 and 19.7% below the Construction industry median of 5.89. National Polymer Industries' overall GF Score™ is 68/100 with 10 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 National Polymer Industries (DHA:NPOLYMER), the current Operating Margin % is 4.73% 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 National Polymer Industries (DHA:NPOLYMER) Overvalued in 2026?
Based on GuruFocus' analysis, National Polymer Industries stock appears to be overvalued.
The current stock price of BDT32.50 is trading 88.8% above its estimated GF Value™ of BDT17.21.
GuruFocus considers National Polymer Industries to be Significantly Overvalued.
Key valuation signals for DHA:NPOLYMER:
Operating Margin %: 4.73% (54% below median its 10-year median of 10.34)
GF Value™: BDT17.21 vs. price of BDT32.50 (88.8% above fair value)
Industry Position: 19.7% below the Construction median (#293 of 1767)
No single metric tells the full story. See the DHA:NPOLYMER stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
National Polymer Industries PLC is engaged in manufacturing a wide range of plastic products for building, construction, sanitation and irrigation applications. It owns and operates PVC Pipes, PVC Water Tanks, PVC Doors and Bottle grade PVC Compound Manufacturing Plant, produces and markets the same in the local and foreign markets. The company generates revenue from the sale of its products.
68GF Score
Get the complete analysis for DHA:NPOLYMER
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
DHA:NPOLYMER has been successfully added to your 
