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The historical rank and industry rank for Aethertek Technology Co's Operating Margin % or its related term are showing as below:
ROCO:3219'
s Operating Margin % Range Over the Past 10 Years
Min: -172.1 Med: 0.94 Max: 54.28
Current: 9.73
ROCO:3219's Operating Margin % is ranked better than 65.12% of 3030
companies
in the Industrial Products industry
Industry Median: 6.52
vs ROCO:3219: 9.73
Aethertek Technology Co (ROCO:3219) 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.
Aethertek Technology Co Operating Margin % Related Terms
Aethertek Technology Co Operating Margin % Historical Data
* Premium members only.
The historical data trend for Aethertek Technology 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:3219 vs GEV, ETN, PH: Operating Margin % Comparison
For the Specialty Industrial Machinery subindustry, Aethertek Technology 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.
Aethertek Technology Co Operating Margin % vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Aethertek Technology Co's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Aethertek Technology Co's Operating Margin % falls into.
Aethertek Technology 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.
Aethertek Technology 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.
Aethertek Technology Co (ROCO:3219) has a Operating Margin % of -15.80% as of Dec. 2025. Operating margin is the ratio of total operating income to net sales. View historical data on Aethertek Technology Co and its competitors. According to the industry distribution chart, Aethertek Technology Co ranks #1057 out of 3030 companies in the Industrial Products industry, placing it in the top 34.9%.
Is Aethertek Technology Co's Operating Margin % too high?
Aethertek Technology Co's current Operating Margin % is -15.80%. Based on the distribution chart, Aethertek Technology Co ranks #1057 out of 3030 companies in the Industrial Products industry, which is above the industry midpoint. Overall, Aethertek Technology Co has a GF Score™ of 75/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Aethertek Technology Co's Operating Margin % compare to GEV and ETN?
According to the Industrial Products industry distribution chart, Aethertek Technology Co ranks #1057 out of 3030 companies for Operating Margin %. This puts Aethertek Technology Co in the upper half of its industry. The industry median Operating Margin % is 6.52. 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 an Industrial Products company?
The median Operating Margin % among Industrial Products companies is 6.52, based on 3,030 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 Aethertek Technology Co and its competitors. For the Industrial Products industry, the median Operating Margin % is 6.52 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Aethertek Technology Co's current Operating Margin % is -15.80%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aethertek Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Aethertek Technology Co (ROCO:3219) is currently considered Fairly Valued. The stock's GF Value™ is NT$70.08, compared to a current price of NT$72.30 — trading 3.2% above its estimated fair value. The current Operating Margin % is -15.80%. Aethertek Technology Co's overall GF Score™ is 75/100 with 1 warning sign 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 Aethertek Technology Co (ROCO:3219), the current Operating Margin % is -15.80% 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 Aethertek Technology Co (ROCO:3219) Overvalued in 2026?
Based on GuruFocus' analysis, Aethertek Technology Co stock appears to be overvalued.
The current stock price of NT$72.30 is trading 3.2% above its estimated GF Value™ of NT$70.08.
GuruFocus considers Aethertek Technology Co to be Fairly Valued.
Key valuation signals for ROCO:3219:
Operating Margin %: -15.80%
GF Value™: NT$70.08 vs. price of NT$72.30 (3.2% above fair value)
No single metric tells the full story. See the ROCO:3219 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Aethertek Technology Co Ltd is a Taiwan-based company mainly engaged in the design, manufacturing, and sale of automation machinery and related equipment. Its product portfolio includes the T800 Functional Tester, T1000 Board-Level Tester, passive antennas, RF switches, shield boxes, and micro-probing equipment for microscale diagnostics, among others. In addition to its core products, the company provides solutions for 5G communication and offers test and measurement devices across various industries. Aethertek also offers design services encompassing software, hardware, and antenna development. Geographically, it derives maximum revenue from China, followed by Taiwan, India, and other regions.
75GF Score
Get the complete analysis for ROCO:3219
Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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