Zilltek TechnologyROCO:6679 -0.74%83 Gross Margin % is 46.91% as of Dec. 2025, which is 26% above its 10-year median of 37.21. GuruFocus rates ROCO:6679 with a GF Score™ of 83/100 and a GF Value™ of NT$318.11 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 1,008 Semiconductors companies, Zilltek Technology ranks better than 72.62% on this metric.
Warren Buffett believes that firms with excellent long term economics tend to have consistently higher margins.
Durable competitive advantage creates a high Gross Margin % because of the freedom to price in excess of cost. Companies can be categorized by their Gross Margin %
1. Greater than 40% = Durable competitive advantage
2. Less than 40% = Competition eroding margins
3. Less than 20% = no sustainable competitive advantage
Consistency of Gross Margin is key
Zilltek Technology had a gross margin of 46.91% for the quarter that ended in Dec. 2025 => Durable competitive advantage
Be Aware
If a company loses its competitive advantages, usually its gross margin declines well before its sales declines. Watching Gross Margin % and Operating Margin % closely helps avoid value trap situations.
Zilltek Technology Gross Margin % Related Terms
Zilltek Technology Gross Margin % Historical Data
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The historical data trend for Zilltek Technology's Gross 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: Gross Margin % Comparison
For the Semiconductors subindustry, Zilltek Technology's Gross Margin %, along with its competitors' market caps and Gross 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 Gross Margin % vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Zilltek Technology's Gross Margin % distribution charts can be found below:
* The bar in red indicates where Zilltek Technology's Gross 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.
A positive Gross Profit is only the first step for a company to make a net profit. The gross profit needs to be big enough to also cover related labor, equipment, rental, marketing/advertising, research and development and a lot of other costs in selling the products.
Zilltek Technology (ROCO:6679) has a Gross Margin % of 46.91% as of Dec. 2025. Gross margin is the ratio of total gross profit to net sales. View historical data on Zilltek Technology and its competitors. This is 26% above median its historical median of 37.21. Over the past decade, Zilltek Technology's Gross Margin % has ranged from 21.91 to 43.23. According to the industry distribution chart, Zilltek Technology ranks #276 out of 1008 companies in the Semiconductors industry, placing it in the top 27.4%.
Is Zilltek Technology's Gross Margin % too high?
Zilltek Technology's current Gross Margin % of 46.91% is 26% above median its 10-year median of 37.21. Over the past 10 years, this metric has ranged from a low of 21.91 to a high of 43.23. The Semiconductors industry median Gross Margin % is 29.61. Zilltek Technology's value of 46.91% is 58.4% above this industry median. Based on the distribution chart, Zilltek Technology ranks #276 out of 1008 companies in the Semiconductors industry, which is above the industry midpoint. 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 Gross Margin % compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, Zilltek Technology ranks #276 out of 1008 companies for Gross Margin %. This puts Zilltek Technology in the upper half of its industry. The industry median Gross Margin % is 29.61. Zilltek Technology's value of 46.91% is 58.4% above this benchmark. Historically, Zilltek Technology's own Gross Margin % has ranged from 21.91 to 43.23 over the past decade. While the company's 10-year median is 37.21 vs. the industry median of 29.61, 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 Gross Margin % for a Semiconductors company?
The median Gross Margin % among Semiconductors companies is 29.61, based on 1,008 companies in the industry. Companies in the top quartile (top 25%) have a Gross Margin % significantly above this median, while those in the bottom quartile fall well below. However, Gross Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Zilltek Technology's current Gross Margin % of 46.91% is 58.4% 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 Gross Margin % mean?
A high Gross Margin % can signal that a stock is expensive relative to its fundamentals. Gross margin is the ratio of total gross profit to net sales. View historical data on Zilltek Technology and its competitors. For the Semiconductors industry, the median Gross Margin % is 29.61 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Zilltek Technology's current Gross Margin % is 46.91%, which is 26% above median its own 10-year median of 37.21. 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$318.11, compared to a current price of NT$269.50 — trading 15.3% below its estimated fair value. The current Gross Margin % is 46.91%, which is 26% above median its 10-year median of 37.21 and 58.4% above the Semiconductors industry median of 29.61. 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 Gross Margin % calculated?
Gross Margin % is calculated from a company's financial statements. For Zilltek Technology (ROCO:6679), the current Gross Margin % is 46.91% 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$269.50 is trading 15.3% below its estimated GF Value™ of NT$318.11.
GuruFocus considers Zilltek Technology to be Modestly Undervalued.
Key valuation signals for ROCO:6679:
Gross Margin %: 46.91% (26% above median its 10-year median of 37.21)
GF Value™: NT$318.11 vs. price of NT$269.50 (15.3% below fair value)
Industry Position: 58.4% above the Semiconductors median (#276 of 1008)
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
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