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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.
CastleNet Technology Operating Margin % Related Terms
CastleNet Technology Operating Margin % Historical Data
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The historical data trend for CastleNet Technology'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:8059 vs CSCO, CIEN, MSI: Operating Margin % Comparison
For the Communication Equipment subindustry, CastleNet Technology'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.
CastleNet Technology Operating Margin % vs Hardware Industry
For the Hardware industry and Technology sector, CastleNet Technology's Operating Margin % distribution charts can be found below:
* The bar in red indicates where CastleNet Technology'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.
CastleNet Technology'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.
CastleNet Technology (ROCO:8059) has a Operating Margin % of 2.69% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on CastleNet Technology and its competitors. According to the industry distribution chart, CastleNet Technology ranks #1831 out of 2477 companies in the Hardware industry, placing it in the top 73.9%.
Is CastleNet Technology's Operating Margin % too high?
CastleNet Technology's current Operating Margin % is 2.69%. The Hardware industry median Operating Margin % is 3.82. CastleNet Technology's value of 2.69% is 29.6% below this industry median. Based on the distribution chart, CastleNet Technology ranks #1831 out of 2477 companies in the Hardware industry, which is below the industry midpoint. Overall, CastleNet Technology has a GF Score™ of 52/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does CastleNet Technology's Operating Margin % compare to CSCO and CIEN?
According to the Hardware industry distribution chart, CastleNet Technology ranks #1831 out of 2477 companies for Operating Margin %. This places CastleNet Technology in the lower half of its industry. The industry median Operating Margin % is 3.82. CastleNet Technology's value of 2.69% is 29.6% below this benchmark. 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 3.82, based on 2,477 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. CastleNet Technology's current Operating Margin % of 2.69% is 29.6% 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 CastleNet Technology and its competitors. For the Hardware industry, the median Operating Margin % is 3.82 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. CastleNet Technology's current Operating Margin % is 2.69%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is CastleNet Technology stock overvalued right now?
Based on GuruFocus' analysis, CastleNet Technology (ROCO:8059) is currently considered Possible Value Trap. The stock's GF Value™ is NT$365.62, compared to a current price of NT$16.90 — trading 95.4% below its estimated fair value. The current Operating Margin % is 2.69% and 29.6% below the Hardware industry median of 3.82. CastleNet Technology's overall GF Score™ is 52/100 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 CastleNet Technology (ROCO:8059), the current Operating Margin % is 2.69% 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 CastleNet Technology (ROCO:8059) Overvalued in 2026?
Based on GuruFocus' analysis, CastleNet Technology stock appears to be undervalued.
The current stock price of NT$16.90 is trading 95.4% below its estimated GF Value™ of NT$365.62.
GuruFocus considers CastleNet Technology to be Possible Value Trap.
Key valuation signals for ROCO:8059:
Operating Margin %: 2.69%
GF Value™: NT$365.62 vs. price of NT$16.90 (95.4% below fair value)
Industry Position: 29.6% below the Hardware median (#1831 of 2477)
No single metric tells the full story. See the ROCO:8059 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
CastleNet Technology Inc is a manufacturer of network communication equipment in Taiwan. It is predominantly engaged in the manufacturing and selling of consumer electronics products such as broadband communications and digital home entertainment. It offers products like EMTA Gateway, Data Gateway, Data Modem, and WiFi Mesh System among others. Geographically, the company generates a majority of its revenue from America followed by Asia, Europe, and Oceania.
52GF Score
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Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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