General Engineering PCLBKK:GEL Operating Margin % is -17.18% as of Mar. 2026. The stock has 6 warning signs investors should review. Among 404 Building Materials companies, General Engineering PCL ranks worse than 92.33% on this metric.
General Engineering PCL (BKK:GEL) 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.
General Engineering PCL Operating Margin % Related Terms
General Engineering PCL Operating Margin % Historical Data
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The historical data trend for General Engineering 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.
BKK:GEL vs CRH, VMC, MLM: Operating Margin % Comparison
For the Building Materials subindustry, General Engineering 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.
General Engineering PCL Operating Margin % vs Building Materials Industry
For the Building Materials industry and Basic Materials sector, General Engineering PCL's Operating Margin % distribution charts can be found below:
* The bar in red indicates where General Engineering PCL's Operating Margin % falls into.
General Engineering PCL 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.
General Engineering PCL's Operating Margin % for the fiscal year that ended in Dec. 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.
General Engineering PCL (BKK:GEL) has a Operating Margin % of -17.18% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on General Engineering PCL and its competitors. According to the industry distribution chart, General Engineering PCL ranks #373 out of 404 companies in the Building Materials industry, placing it in the top 92.3%.
Is General Engineering PCL's Operating Margin % too high?
General Engineering PCL's current Operating Margin % is -17.18%. Based on the distribution chart, General Engineering PCL ranks #373 out of 404 companies in the Building Materials industry, which is in the bottom quartile relative to peers.
How does General Engineering PCL's Operating Margin % compare to CRH and VMC?
According to the Building Materials industry distribution chart, General Engineering PCL ranks #373 out of 404 companies for Operating Margin %. This places General Engineering PCL in the lower half of its industry. The industry median Operating Margin % is 7.65. 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 Building Materials company?
The median Operating Margin % among Building Materials companies is 7.65, based on 404 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 General Engineering PCL and its competitors. For the Building Materials industry, the median Operating Margin % is 7.65 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. General Engineering PCL's current Operating Margin % is -17.18%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is General Engineering PCL stock overvalued right now?
Based on GuruFocus' analysis, General Engineering PCL (BKK:GEL) is currently considered Modestly Undervalued. The stock's GF Value™ is ฿0.04, compared to a current price of ฿0.03 — trading 25% below its estimated fair value. The current Operating Margin % is -17.18%. 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 General Engineering PCL (BKK:GEL), the current Operating Margin % is -17.18% 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.
General Engineering PCL is engaged in the manufacturing and selling of construction material, prestressed concrete piles, precast concrete, glass fiber reinforced concrete, cementation products and post-tensioned slab, prestressed spun concrete piles, the special qualified PC wire and PC Strand and providing the construction and installation services for such products. Its operating segments are Manufacturing and distribution of concrete products, which is the key revenue-generating segment; Construction services; and Manufacturing and distribution of PC wire and PC strand. The company and its subsidiaries operate in Thailand only.
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