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Alformer Industrial CoROCO:4558 -0.88%47 Operating Margin % is 0.62% as of Dec. 2025, which is 84% below its 10-year median of 3.95. GuruFocus rates ROCO:4558 with a GF Score™ of 47/100 and a GF Value™ of NT$24.61 (Possible Value Trap). The stock has 7 warning signs investors should review. Among 839 Metals & Mining companies, Alformer Industrial Co ranks worse than 65.91% on this metric.
Alformer Industrial Co Ltd had lost money in 50% of the time over the past 12quarters.
Alformer Industrial Co (ROCO:4558) 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.
Alformer Industrial Co Operating Margin % Related Terms
Alformer Industrial Co Operating Margin % Historical Data
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The historical data trend for Alformer Industrial 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.
ROCO:4558 vs AA, CENX, CSTM: Operating Margin % Comparison
For the Aluminum subindustry, Alformer Industrial 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.
Alformer Industrial Co Operating Margin % vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Alformer Industrial Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Alformer Industrial Co's Operating Margin % falls into.
Alformer Industrial 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.
Alformer Industrial Co'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.
Alformer Industrial Co (ROCO:4558) has a Operating Margin % of 0.62% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Alformer Industrial Co and its competitors. This is 84% below median its historical median of 3.95. According to the industry distribution chart, Alformer Industrial Co ranks #553 out of 839 companies in the Metals & Mining industry, placing it in the top 65.9%.
Is Alformer Industrial Co's Operating Margin % too high?
Alformer Industrial Co's current Operating Margin % of 0.62% is 84% below median its 10-year median of 3.95. The Metals & Mining industry median Operating Margin % is 6.12. Alformer Industrial Co's value of 0.62% is 89.9% below this industry median. Based on the distribution chart, Alformer Industrial Co ranks #553 out of 839 companies in the Metals & Mining industry, which is below the industry midpoint. Overall, Alformer Industrial Co has a GF Score™ of 47/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Alformer Industrial Co's Operating Margin % compare to AA and CENX?
According to the Metals & Mining industry distribution chart, Alformer Industrial Co ranks #553 out of 839 companies for Operating Margin %. This places Alformer Industrial Co in the lower half of its industry. The industry median Operating Margin % is 6.12. Alformer Industrial Co's value of 0.62% is 89.9% below this benchmark. While the company's 10-year median is 3.95 vs. the industry median of 6.12, Alformer Industrial 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 Metals & Mining company?
The median Operating Margin % among Metals & Mining companies is 6.12, based on 839 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. Alformer Industrial Co's current Operating Margin % of 0.62% is 89.9% 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 Alformer Industrial Co and its competitors. For the Metals & Mining industry, the median Operating Margin % is 6.12 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Alformer Industrial Co's current Operating Margin % is 0.62%, which is 84% below median its own 10-year median of 3.95. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Alformer Industrial Co stock overvalued right now?
Based on GuruFocus' analysis, Alformer Industrial Co (ROCO:4558) is currently considered Possible Value Trap. The stock's GF Value™ is NT$24.61, compared to a current price of NT$16.85 — trading 31.5% below its estimated fair value. The current Operating Margin % is 0.62%, which is 84% below median its 10-year median of 3.95 and 89.9% below the Metals & Mining industry median of 6.12. Alformer Industrial Co's overall GF Score™ is 47/100 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 Alformer Industrial Co (ROCO:4558), the current Operating Margin % is 0.62% as of Dec. 2025. 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 Alformer Industrial Co (ROCO:4558) Overvalued in 2026?
Based on GuruFocus' analysis, Alformer Industrial Co stock appears to be undervalued.
The current stock price of NT$16.85 is trading 31.5% below its estimated GF Value™ of NT$24.61.
GuruFocus considers Alformer Industrial Co to be Possible Value Trap.
Key valuation signals for ROCO:4558:
Operating Margin %: 0.62% (84% below median its 10-year median of 3.95)
GF Value™: NT$24.61 vs. price of NT$16.85 (31.5% below fair value)
Industry Position: 89.9% below the Metals & Mining median (#553 of 839)
No single metric tells the full story. See the ROCO:4558 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Alformer Industrial Co Ltd is engaged in the manufacturing of aluminum extrusion products. Its products comprise of Aluminum Grilles, Curtain Walls, Aluminum Solar Frames, Green House, Bike Components and Furniture Components among others.
47GF Score
Get the complete analysis for ROCO:4558
Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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