Zilltek Technology (ROCO:6679) PEG Ratio: N/A (As of Jul. 16, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

ROCO:6679 Zilltek Technology Corp ROCO:6679
83 GF Score
Price NT$239.00
GF Value NT$319.47
Valuation Modestly Undervalued
! 4 Warning Signs
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What is Zilltek Technology PEG Ratio?

PE Ratio without NRI / 5-Year EBITDA Growth Rate*

PEG Ratio is defined as the PE Ratio without NRI divided by the growth ratio. The growth rate we use is the 5-Year EBITDA growth rate. As of today, Zilltek Technology's PE Ratio without NRI is 35.25. Zilltek Technology's 5-Year EBITDA growth rate is -7.10%. Therefore, Zilltek Technology's PEG Ratio for today is N/A.

* The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.


The historical rank and industry rank for Zilltek Technology's PEG Ratio or its related term are showing as below:


During the past 11 years, Zilltek Technology's highest PEG Ratio was 19.89. The lowest was 0.13. And the median was 1.85.


ROCO:6679's PEG Ratio is not ranked *
in the Semiconductors industry.
Industry Median: 3.53
* Ranked among companies with meaningful PEG Ratio only.

Peter Lynch thinks a company with a P/E ratio equal to its growth rate is fairly valued.


Zilltek Technology  (ROCO:6679) PEG Ratio Explanation

To compare stocks with different growth rates, Peter Lynch invented a ratio called PEG Ratio. PEG Ratio is defined as the P/E ratio divided by the growth ratio. He thinks a company with a P/E ratio equal to its growth rate is fairly valued. Still he said he would rather buy a company growing 20% a year with a P/E of 20, instead of a company growing 10% a year with a P/E of 10.


Zilltek Technology PEG Ratio Related Terms


Zilltek Technology PEG Ratio Historical Data

* Premium members only.

The historical data trend for Zilltek Technology's PEG Ratio 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.

Zilltek Technology PEG Ratio Chart

Zilltek Technology Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
PEG Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.34 0.30 2.51 5.78 0.00

Zilltek Technology Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
PEG Ratio Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 5.78 18.53 0.00 0.00 0.00

ROCO:6679 vs NVDA, AVGO, MU: PEG Ratio Comparison

For the Semiconductors subindustry, Zilltek Technology's PEG Ratio, along with its competitors' market caps and PEG Ratio 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 PEG Ratio vs Semiconductors Industry

For the Semiconductors industry and Technology sector, Zilltek Technology's PEG Ratio distribution charts can be found below:

* The bar in red indicates where Zilltek Technology's PEG Ratio falls into.


ROCO:6679
83GF Score
Zilltek Technology Corp ROCO:6679
PEG Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Zilltek Technology PEG Ratio Calculation

PEG Ratio is defined as the PE Ratio without NRI divided by the growth ratio. The ratio we use is the 5-Year EBITDA growth rate.

Zilltek Technology's PEG Ratio for today is calculated as

PEG Ratio=PE Ratio without NRI/5-Year EBITDA Growth Rate*
=35.250737463127/-7.10
=N/A

* 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.

* Note: The 5-Year EBITDA Growth Rate is the 5-year average EBITDA per share growth rate. While the denominator is a percentage, we use the whole number as opposed to the decimal form for the calculation. For example, 5% would be shown as 5 as opposed to 0.05. If it's smaller than or equal to 0, then the PEG Ratio is not calculated.

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$239.00 is trading 25.2% below its estimated GF Value™ of NT$319.47. GuruFocus considers Zilltek Technology to be Modestly Undervalued.

Key valuation signals for ROCO:6679:

  • PEG Ratio: N/A
  • GF Value™: NT$319.47 vs. price of NT$239.00 (25.2% below fair value)
  • GF Score™: 83/100 with 4 warning signs

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 Business Description

Address No. 6-1, Duxing Road, 5th Floor, Hsinchu Science Park, Hsinchu City, TWN, 30078
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

PEG Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$239.00
Price
NT$319.47
GF Value