E&R Engineering (ROCO:8027) PEG Ratio: N/A (As of Jul. 17, 2026)

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Charlie Tian
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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:8027 E&R Engineering Corp ROCO:8027
40 GF Score
Price NT$215.50
GF Value NT$102.36
Valuation Significantly Overvalued
! 3 Warning Signs
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What is E&R Engineering 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, E&R Engineering's PE Ratio without NRI is 0.00. E&R Engineering's 5-Year EBITDA growth rate is -27.40%. Therefore, E&R Engineering'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 E&R Engineering's PEG Ratio or its related term are showing as below:


During the past 13 years, E&R Engineering's highest PEG Ratio was 14.69. The lowest was 0.19. And the median was 4.39.


ROCO:8027's PEG Ratio is not ranked *
in the Industrial Products industry.
Industry Median: 1.785
* 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.


E&R Engineering  (ROCO:8027) 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.


E&R Engineering PEG Ratio Related Terms


E&R Engineering PEG Ratio Historical Data

* Premium members only.

The historical data trend for E&R Engineering'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.

E&R Engineering PEG Ratio Chart

E&R Engineering 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 0.00 0.00 6.18 0.00 0.00

E&R Engineering 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 0.00 0.00 0.00 0.00 0.00

ROCO:8027 vs GEV, ETN, PH: PEG Ratio Comparison

For the Specialty Industrial Machinery subindustry, E&R Engineering'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.


E&R Engineering PEG Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, E&R Engineering's PEG Ratio distribution charts can be found below:

* The bar in red indicates where E&R Engineering's PEG Ratio falls into.


ROCO:8027
40GF Score
E&R Engineering Corp ROCO:8027
PEG Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

E&R Engineering 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.

E&R Engineering's PEG Ratio for today is calculated as

PEG Ratio=PE Ratio without NRI/5-Year EBITDA Growth Rate*
=/-27.40
=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 E&R Engineering (ROCO:8027) Overvalued in 2026?

Based on GuruFocus' analysis, E&R Engineering stock appears to be overvalued. The current stock price of NT$215.50 is trading 110.5% above its estimated GF Value™ of NT$102.36. GuruFocus considers E&R Engineering to be Significantly Overvalued.

Key valuation signals for ROCO:8027:

  • PEG Ratio: N/A
  • GF Value™: NT$102.36 vs. price of NT$215.50 (110.5% above fair value)
  • GF Score™: 40/100 with 3 warning signs

No single metric tells the full story. See the ROCO:8027 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


E&R Engineering Business Description

Address Hengshan Road, No. 61, Yanchao District, Kaohsiung, TWN, 824
E&R Engineering Corp engages mainly in the planning, designing, manufacturing, installing, and selling of automatic machines, related components, computer software, and pollution control equipment. Its main product offerings include laser and plasma equipment for semiconductor, LED, and passive component industries; laboratory testing equipment, flexible printed circuit equipment, and semiconductor packaging solutions. The Group operates in the following reportable segments: Automation Equipment, which generates the maximum revenue, Flexible Printed Circuit (FPC), Semiconductor Packaging Materials, and Others. Geographically, it generates maximum revenue from Taiwan, and the rest from Hong Kong and Mainland China, Southeast Asia, America, Europe, and other regions.
40GF Score

Get the complete analysis for ROCO:8027

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

NT$215.50
Price
NT$102.36
GF Value