STC Concrete ProductBKK:STC +1.72%51 Operating Margin % is 5.51% as of Mar. 2026, which is 3% above its 10-year median of 5.37. GuruFocus rates BKK:STC with a GF Score™ of 51/100 and a GF Value™ of ฿0.58 (Fairly Valued). The stock has 7 warning signs investors should review. Among 403 Building Materials companies, STC Concrete Product ranks worse than 64.52% on this metric.
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.
STC Concrete Product Operating Margin % Related Terms
STC Concrete Product Operating Margin % Historical Data
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The historical data trend for STC Concrete Product'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:STC vs CRH, VMC, MLM: Operating Margin % Comparison
For the Building Materials subindustry, STC Concrete Product'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.
STC Concrete Product Operating Margin % vs Building Materials Industry
For the Building Materials industry and Basic Materials sector, STC Concrete Product's Operating Margin % distribution charts can be found below:
* The bar in red indicates where STC Concrete Product'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.
STC Concrete Product'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.
STC Concrete Product (BKK:STC) has a Operating Margin % of 5.51% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on STC Concrete Product and its competitors. This is near median its historical median of 5.37. Over the past decade, STC Concrete Product's Operating Margin % has ranged from 2.16 to 9.42. According to the industry distribution chart, STC Concrete Product ranks #260 out of 403 companies in the Building Materials industry, placing it in the top 64.5%.
Is STC Concrete Product's Operating Margin % too high?
STC Concrete Product's current Operating Margin % of 5.51% is near median its 10-year median of 5.37. Over the past 10 years, this metric has ranged from a low of 2.16 to a high of 9.42. The Building Materials industry median Operating Margin % is 7.62. STC Concrete Product's value of 5.51% is 27.7% below this industry median. Based on the distribution chart, STC Concrete Product ranks #260 out of 403 companies in the Building Materials industry, which is below the industry midpoint. Overall, STC Concrete Product has a GF Score™ of 51/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does STC Concrete Product's Operating Margin % compare to CRH and VMC?
According to the Building Materials industry distribution chart, STC Concrete Product ranks #260 out of 403 companies for Operating Margin %. This places STC Concrete Product in the lower half of its industry. The industry median Operating Margin % is 7.62. STC Concrete Product's value of 5.51% is 27.7% below this benchmark. Historically, STC Concrete Product's own Operating Margin % has ranged from 2.16 to 9.42 over the past decade. While the company's 10-year median is 5.37 vs. the industry median of 7.62, STC Concrete Product 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 Building Materials company?
The median Operating Margin % among Building Materials companies is 7.62, based on 403 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. STC Concrete Product's current Operating Margin % of 5.51% is 27.7% 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 STC Concrete Product and its competitors. For the Building Materials industry, the median Operating Margin % is 7.62 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. STC Concrete Product's current Operating Margin % is 5.51%, which is near median its own 10-year median of 5.37. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is STC Concrete Product stock overvalued right now?
Based on GuruFocus' analysis, STC Concrete Product (BKK:STC) is currently considered Fairly Valued. The stock's GF Value™ is ฿0.58, compared to a current price of ฿0.59 — trading 1.7% above its estimated fair value. The current Operating Margin % is 5.51%, which is near median its 10-year median of 5.37 and 27.7% below the Building Materials industry median of 7.62. STC Concrete Product's overall GF Score™ is 51/100 with 7 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 STC Concrete Product (BKK:STC), the current Operating Margin % is 5.51% 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 STC Concrete Product (BKK:STC) Overvalued in 2026?
Based on GuruFocus' analysis, STC Concrete Product stock appears to be overvalued.
The current stock price of ฿0.59 is trading 1.7% above its estimated GF Value™ of ฿0.58.
GuruFocus considers STC Concrete Product to be Fairly Valued.
Key valuation signals for BKK:STC:
Operating Margin %: 5.51% (near median its 10-year median of 5.37)
GF Value™: ฿0.58 vs. price of ฿0.59 (1.7% above fair value)
Industry Position: 27.7% below the Building Materials median (#260 of 403)
No single metric tells the full story. See the BKK:STC stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
STC Concrete Product PLC is engaged in the manufacture and sales of ready-mixed concrete and aggregate. Its products include ready mixed concrete, concrete drainage pipes, precast concrete slabs, prestressed concrete piles, moisture resistant lightweight concrete blocks, and prefabricated fence panels. It operates in single segment of manufacturing and selling of ready-mixed concrete and aggregate and the single geographical area of its operations is Thailand.
51GF Score
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