Sincere Security (ROCO:6721) PEG Ratio: N/A (As of Aug. 08, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
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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:6721 Sincere Security Corp Ltd ROCO:6721
90 GF Score
Price NT$52.00
GF Value NT$67.55
Valuation Modestly Undervalued
! 3 Warning Signs
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What is Sincere Security 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, Sincere Security's PE Ratio without NRI is 10.98. Sincere Security's 5-Year EBITDA growth rate is -3.20%. Therefore, Sincere Security'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 Sincere Security's PEG Ratio or its related term are showing as below:


During the past 9 years, Sincere Security's highest PEG Ratio was 25.51. The lowest was 1.64. And the median was 5.80.


ROCO:6721's PEG Ratio is not ranked *
in the Business Services industry.
Industry Median: 1.135
* 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.


Sincere Security  (ROCO:6721) 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.


Sincere Security PEG Ratio Related Terms


Sincere Security PEG Ratio Historical Data

* Premium members only.

The historical data trend for Sincere Security'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.

Sincere Security PEG Ratio Chart

Sincere Security Annual Data
Trend Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
PEG Ratio
Get a 7-Day Free Trial Premium Member Only 0.00 3.93 25.11 0.00 5.72

Sincere Security Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
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 0.00 0.00 1.66 5.72 16.26

ROCO:6721 vs CTAS, CPRT, GPN: PEG Ratio Comparison

For the Specialty Business Services subindustry, Sincere Security'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.


Sincere Security PEG Ratio vs Business Services Industry

For the Business Services industry and Industrials sector, Sincere Security's PEG Ratio distribution charts can be found below:

* The bar in red indicates where Sincere Security's PEG Ratio falls into.


ROCO:6721
90GF Score
Sincere Security Corp Ltd ROCO:6721
PEG Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Sincere Security 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.

Sincere Security's PEG Ratio for today is calculated as

PEG Ratio=PE Ratio without NRI/5-Year EBITDA Growth Rate*
=10.977411864049/-3.20
=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 Sincere Security (ROCO:6721) Overvalued in 2026?

Based on GuruFocus' analysis, Sincere Security stock appears to be undervalued. The current stock price of NT$52.00 is trading 23% below its estimated GF Value™ of NT$67.55. GuruFocus considers Sincere Security to be Modestly Undervalued.

Key valuation signals for ROCO:6721:

  • PEG Ratio: N/A
  • GF Value™: NT$67.55 vs. price of NT$52.00 (23% below fair value)
  • GF Score™: 90/100 with 3 warning signs

No single metric tells the full story. See the ROCO:6721 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Sincere Security Business Description

Address Room 5, 2nd Floor, 201 Heping Street, Hsinchu County, Zhubei, TWN
Sincere Security Corp Ltd is a Taiwan based company involved in property management, cleaning services, mechanical and electrical air-conditioning maintenance and security monitoring. It provides services at science parks, hypermarkets, commercial buildings, schools, golf courses, villas and residential areas, and government units.
90GF Score

Get the complete analysis for ROCO:6721

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

NT$52.00
Price
NT$67.55
GF Value