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.
Foci Fiber Optic Communications Operating Margin % Related Terms
Foci Fiber Optic Communications 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:3363 vs CSCO, CIEN, MSI: Operating Margin % Comparison
For the Communication Equipment subindustry, Foci Fiber Optic Communications'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.
Foci Fiber Optic Communications Operating Margin % vs Hardware Industry
For the Hardware industry and Technology sector, Foci Fiber Optic Communications's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Foci Fiber Optic Communications'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.
Foci Fiber Optic Communications (ROCO:3363) has a Operating Margin % of -9.17% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Foci Fiber Optic Communications and its competitors. According to the industry distribution chart, Foci Fiber Optic Communications ranks #1690 out of 2479 companies in the Hardware industry, placing it in the top 68.2%.
Is Foci Fiber Optic Communications' Operating Margin % too high?
Foci Fiber Optic Communications' current Operating Margin % is -9.17%. Based on the distribution chart, Foci Fiber Optic Communications ranks #1690 out of 2479 companies in the Hardware industry, which is below the industry midpoint. Overall, Foci Fiber Optic Communications has a GF Score™ of 74/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Foci Fiber Optic Communications' Operating Margin % compare to CSCO and CIEN?
According to the Hardware industry distribution chart, Foci Fiber Optic Communications ranks #1690 out of 2479 companies for Operating Margin %. This places Foci Fiber Optic Communications in the lower half of its industry. The industry median Operating Margin % is 3.80. 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 3.80, based on 2,479 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 Foci Fiber Optic Communications and its competitors. For the Hardware industry, the median Operating Margin % is 3.80 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Foci Fiber Optic Communications's current Operating Margin % is -9.17%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Foci Fiber Optic Communications stock overvalued right now?
Based on GuruFocus' analysis, Foci Fiber Optic Communications (ROCO:3363) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$227.33, compared to a current price of NT$608.00 — trading 167.5% above its estimated fair value. The current Operating Margin % is -9.17%. Foci Fiber Optic Communications' overall GF Score™ is 74/100 with 3 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 Foci Fiber Optic Communications (ROCO:3363), the current Operating Margin % is -9.17% 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 Foci Fiber Optic Communications (ROCO:3363) Overvalued in 2026?
Based on GuruFocus' analysis, Foci Fiber Optic Communications stock appears to be overvalued.
The current stock price of NT$608.00 is trading 167.5% above its estimated GF Value™ of NT$227.33.
GuruFocus considers Foci Fiber Optic Communications to be Significantly Overvalued.
Key valuation signals for ROCO:3363:
Operating Margin %: -9.17%
GF Value™: NT$227.33 vs. price of NT$608.00 (167.5% above fair value)
No single metric tells the full story. See the ROCO:3363 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Foci Fiber Optic Communications Business Description
Foci Fiber Optic Communications Inc is engaged in the research, manufacture and sales of various passive fiber optical components, fiber optic test equipment, fiber optics application system and plan, design, consulting and technology services of system integration of the aforementioned products. Its products include interconnector series, isolators, couplers, splitters, attenuators, WDM devices, and filter devices, among others. Geographically, it generates the majority of its revenue from America.
74GF Score
Get the complete analysis for ROCO:3363
Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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