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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.
Formosa Electronic Industries Operating Margin % Related Terms
Formosa Electronic 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.
ROCO:8171 vs APH, GLW: Operating Margin % Comparison
For the Electronic Components subindustry, Formosa Electronic 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.
Formosa Electronic Industries Operating Margin % vs Hardware Industry
For the Hardware industry and Technology sector, Formosa Electronic Industries's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Formosa Electronic Industries'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.
* 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.
Formosa Electronic Industries (ROCO:8171) has a Operating Margin % of -93.41% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Formosa Electronic Industries and its competitors. According to the industry distribution chart, Formosa Electronic Industries ranks #2359 out of 2476 companies in the Hardware industry, placing it in the top 95.3%.
Is Formosa Electronic Industries' Operating Margin % too high?
Formosa Electronic Industries' current Operating Margin % is -93.41%. Based on the distribution chart, Formosa Electronic Industries ranks #2359 out of 2476 companies in the Hardware industry, which is in the bottom quartile relative to peers. Overall, Formosa Electronic Industries has a GF Score™ of 38/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Formosa Electronic Industries' Operating Margin % compare to APH and GLW?
According to the Hardware industry distribution chart, Formosa Electronic Industries ranks #2359 out of 2476 companies for Operating Margin %. This places Formosa Electronic Industries in the lower half of its industry. The industry median Operating Margin % is 3.81. 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 Hardware company?
The median Operating Margin % among Hardware companies is 3.81, based on 2,476 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 Formosa Electronic Industries and its competitors. For the Hardware industry, the median Operating Margin % is 3.81 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Formosa Electronic Industries's current Operating Margin % is -93.41%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Formosa Electronic Industries stock overvalued right now?
Based on GuruFocus' analysis, Formosa Electronic Industries (ROCO:8171) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$7.94, compared to a current price of NT$20.75 — trading 161.3% above its estimated fair value. The current Operating Margin % is -93.41%. Formosa Electronic Industries' overall GF Score™ is 38/100 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 Formosa Electronic Industries (ROCO:8171), the current Operating Margin % is -93.41% 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 Formosa Electronic Industries (ROCO:8171) Overvalued in 2026?
Based on GuruFocus' analysis, Formosa Electronic Industries stock appears to be overvalued.
The current stock price of NT$20.75 is trading 161.3% above its estimated GF Value™ of NT$7.94.
GuruFocus considers Formosa Electronic Industries to be Significantly Overvalued.
Key valuation signals for ROCO:8171:
Operating Margin %: -93.41%
GF Value™: NT$7.94 vs. price of NT$20.75 (161.3% above fair value)
No single metric tells the full story. See the ROCO:8171 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Formosa Electronic Industries Business Description
Formosa Electronic Industries Inc is engaged in the assembly, processing, manufacturing, trading, agent distribution, and trading of single-string parallel battery modules, mobile power supplies, wireless chargers, green energy battery modules, and distributed energy storage systems. The Company's other products include wireless chargers, power adapters, accessories, OEM, and green products.
38GF Score
Get the complete analysis for ROCO:8171
Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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