Etron Technology (ROCO:5351) Volatility: 42.38% (As of Jul. 26, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
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:5351 Etron Technology Inc ROCO:5351
38 GF Score
Price NT$84.80
GF Value NT$42.03
Valuation Significantly Overvalued
! 2 Warning Signs
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What is Etron Technology Volatility?

Etron Technology ROCO:5351 -3.42% 38 Volatility is 42.38% as of Jul. 26, 2026. GuruFocus rates ROCO:5351 with a GF Score™ of 38/100 and a GF Value™ of NT$42.03 (Significantly Overvalued). The stock has 2 warning signs investors should review.

Volatility is a statistical measure of the dispersion of returns for a given security or market index, it shows how the price swings around its mean. The volatility here is measured as the annualized standard deviation between monthly returns from the security over the past year. In most cases, the higher the volatility, the riskier the security.

As of today (2026-07-26), Etron Technology's Volatility is 42.38%.


Etron Technology  (ROCO:5351) Volatility Explanation

Volatility is a statistical measure of the dispersion of returns for a given security or market index. It’s often measured as standard deviation or variance of historical returns over a certain period. The volatility here is measured as the annualized standard deviation between monthly returns from the security over the past year.

Volatility reflects the uncertainty or risk of a security’s value. Generally speaking, a higher volatility suggests a higher risk, because it implies a wider fluctuation around average price. This means the price of the security can change dramatically in either direction within a short period. Conversely, a lower volatility means that the security's price is more steady, which suggests a lower risk.

Another measurement of relative volatility is Beta. Beta is a measure of systematic risk of a security or a portfolio in comparison to the market as a whole. Beta is usually compared to 1. A beta of greater than 1 indicates that the security's price will be more volatile than the market.


Etron Technology Volatility Related Terms


ROCO:5351 vs NVDA, AVGO, MU: Volatility Comparison

For the Semiconductors subindustry, Etron Technology's Volatility, along with its competitors' market caps and Volatility 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.


Etron Technology Volatility vs Semiconductors Industry

For the Semiconductors industry and Technology sector, Etron Technology's Volatility distribution charts can be found below:

* The bar in red indicates where Etron Technology's Volatility falls into.


ROCO:5351
38GF Score
Etron Technology Inc ROCO:5351
Volatility is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Etron Technology  (ROCO:5351) Volatility Calculation

The annualized volatility is calculated as following:

σA=σM * 12
= 1/(n-1) ∑(Ri - R')^2 * 12

Where: σM is the monthly volatility, n is the number of months in the period, Ri is the security's historical monthly returns and R' is the arithmetic mean of monthly returns.

* 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.

Frequently Asked Questions Learn more about Volatility →
What does a Volatility of 42.38% mean?
Etron Technology (ROCO:5351) has a Volatility of 42.38% as of Jul. 26, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Etron Technology and its competitors.
Is Etron Technology's Volatility too high?
Etron Technology's current Volatility is 42.38%. Overall, Etron Technology has a GF Score™ of 38/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Etron Technology's Volatility compare to NVDA and AVGO?
Etron Technology's Volatility of 42.38% can be compared against companies in the Semiconductors industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Volatility for a Semiconductors company?
A good Volatility depends on the Semiconductors industry context. However, Volatility should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Volatility mean?
A high Volatility can signal that a stock is expensive relative to its fundamentals. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Etron Technology and its competitors. Etron Technology's current Volatility is 42.38%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Etron Technology stock overvalued right now?
Based on GuruFocus' analysis, Etron Technology (ROCO:5351) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$42.03, compared to a current price of NT$84.80 — trading 101.8% above its estimated fair value. The current Volatility is 42.38%. Etron Technology's overall GF Score™ is 38/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Volatility calculated?
Volatility is calculated from a company's financial statements. For Etron Technology (ROCO:5351), the current Volatility is 42.38% as of Jul. 26, 2026. 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 Etron Technology (ROCO:5351) Overvalued in 2026?

Based on GuruFocus' analysis, Etron Technology stock appears to be overvalued. The current stock price of NT$84.80 is trading 101.8% above its estimated GF Value™ of NT$42.03. GuruFocus considers Etron Technology to be Significantly Overvalued.

Key valuation signals for ROCO:5351:

  • Volatility: 42.38%
  • GF Value™: NT$42.03 vs. price of NT$84.80 (101.8% above fair value)
  • GF Score™: 38/100 with 2 warning signs

No single metric tells the full story. See the ROCO:5351 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Etron Technology Business Description

Address No. 6 Technology Road 5, Hsinchu Science Park, Hsinchu, TWN, 30078
Etron Technology Inc is engaged in the manufacturing and design of various integrated circuits. The Company is mainly engaged in the design, manufacturing, and sale of niche memory chips. Its product portfolio consists of Memory ICs, which include Commercial DRAM, Industrial DRAM, Automotive DRAM, Known Good Die, DRAM, and Flash; and Logic ICs, which include USB and 3D Sensing. Geographically, the company operates in Taiwan, Asia, and other countries. The majority of its revenue is generated from the Asia region.
38GF Score

Get the complete analysis for ROCO:5351

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

NT$84.80
Price
NT$42.03
GF Value