Zilltek TechnologyROCO:6679 +0.76%83 Net Margin % is 33.33% as of Dec. 2025, which is 91% above its 10-year median of 17.42. GuruFocus rates ROCO:6679 with a GF Score™ of 83/100 and a GF Value™ of NT$317.77 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 1,021 Semiconductors companies, Zilltek Technology ranks better than 83.35% on this metric.
The historical rank and industry rank for Zilltek Technology's Net Margin % or its related term are showing as below:
ROCO:6679'
s Net Margin % Range Over the Past 10 Years
Min: 2.12 Med: 17.42 Max: 24.04
Current: 18.58
ROCO:6679's Net Margin % is ranked better than 83.35% of 1021
companies
in the Semiconductors industry
Industry Median: 4.17
vs ROCO:6679: 18.58
Zilltek Technology (ROCO:6679) Net Margin % Explanation
Although Net Income and Earnings-per-Share (EPS) are the most widely used parameter in measuring a company's profitability and valuation, it is the least reliable. The reason is that reported earnings can be manipulated easily by adjusting any numbers such as Depreciation, Depletion and Amotorization and non-recurring items.
But the long term trend of the net margin is a good indicator of the competitiveness and health of the business.
Zilltek Technology Net Margin % Related Terms
Zilltek Technology Net Margin % Historical Data
* Premium members only.
The historical data trend for Zilltek Technology's Net 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:6679 vs NVDA, AVGO, MU: Net Margin % Comparison
For the Semiconductors subindustry, Zilltek Technology's Net Margin %, along with its competitors' market caps and Net 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.
Zilltek Technology Net Margin % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Zilltek Technology's Net Margin % distribution charts can be found below:
* The bar in red indicates where Zilltek Technology's Net Margin % falls into.
* 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.
Zilltek Technology (ROCO:6679) has a Net Margin % of 33.33% as of Dec. 2025. Net margin is the ratio of total net income to net sales. View historical data on Zilltek Technology and its competitors. This is 91% above median its historical median of 17.42. Over the past decade, Zilltek Technology's Net Margin % has ranged from 2.12 to 24.04. According to the industry distribution chart, Zilltek Technology ranks #170 out of 1021 companies in the Semiconductors industry, placing it in the top 16.7%.
Is Zilltek Technology's Net Margin % too high?
Zilltek Technology's current Net Margin % of 33.33% is 91% above median its 10-year median of 17.42. Over the past 10 years, this metric has ranged from a low of 2.12 to a high of 24.04. The Semiconductors industry median Net Margin % is 4.17. Zilltek Technology's value of 33.33% is 699.3% above this industry median. Based on the distribution chart, Zilltek Technology ranks #170 out of 1021 companies in the Semiconductors industry, which is in the top quartile — a strong position relative to peers. Overall, Zilltek Technology has a GF Score™ of 83/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Zilltek Technology's Net Margin % compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, Zilltek Technology ranks #170 out of 1021 companies for Net Margin %. This places Zilltek Technology in the top 17% of its industry — outperforming the majority of peers. The industry median Net Margin % is 4.17. Zilltek Technology's value of 33.33% is 699.3% above this benchmark. Historically, Zilltek Technology's own Net Margin % has ranged from 2.12 to 24.04 over the past decade. While the company's 10-year median is 17.42 vs. the industry median of 4.17, Zilltek Technology has consistently been above 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 Net Margin % for a Semiconductors company?
The median Net Margin % among Semiconductors companies is 4.17, based on 1,021 companies in the industry. Companies in the top quartile (top 25%) have a Net Margin % significantly above this median, while those in the bottom quartile fall well below. However, Net Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Zilltek Technology's current Net Margin % of 33.33% is 699.3% above 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 Net Margin % mean?
A high Net Margin % can signal that a stock is expensive relative to its fundamentals. Net margin is the ratio of total net income to net sales. View historical data on Zilltek Technology and its competitors. For the Semiconductors industry, the median Net Margin % is 4.17 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Zilltek Technology's current Net Margin % is 33.33%, which is 91% above median its own 10-year median of 17.42. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Zilltek Technology stock overvalued right now?
Based on GuruFocus' analysis, Zilltek Technology (ROCO:6679) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$317.77, compared to a current price of NT$265.50 — trading 16.4% below its estimated fair value. The current Net Margin % is 33.33%, which is 91% above median its 10-year median of 17.42 and 699.3% above the Semiconductors industry median of 4.17. Zilltek Technology's overall GF Score™ is 83/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Net Margin % calculated?
Net Margin % is calculated from a company's financial statements. For Zilltek Technology (ROCO:6679), the current Net Margin % is 33.33% 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 Zilltek Technology (ROCO:6679) Overvalued in 2026?
Based on GuruFocus' analysis, Zilltek Technology stock appears to be undervalued.
The current stock price of NT$265.50 is trading 16.4% below its estimated GF Value™ of NT$317.77.
GuruFocus considers Zilltek Technology to be Modestly Undervalued.
Key valuation signals for ROCO:6679:
Net Margin %: 33.33% (91% above median its 10-year median of 17.42)
GF Value™: NT$317.77 vs. price of NT$265.50 (16.4% below fair value)
Industry Position: 699.3% above the Semiconductors median (#170 of 1021)
No single metric tells the full story. See the ROCO:6679 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Zilltek Technology Corp engaged in the manufacturing of electronic components, buying/selling services, research and development, manufacturing, and sales of sensor and application chipsets. Company focuses on developing compact, energy-saving, and high-performance MEMS technologies to meet a variety of acoustic applications, including but not limited to laptops, TVs, tablets, smartphones, smart watches, smart speakers, drones, hearing aids, IoT devices, TWS headphones, sports equipment, and mobile infotainment systems. It operates in Taiwan, China and Other countries. Majority of revenue is from Taiwan.
83GF Score
Get the complete analysis for ROCO:6679
Net Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCO:6679 has been successfully added to your 
