Top Union Electronics (ROCO:6266) Volatility: 8.89% (As of Jul. 23, 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:6266 Top Union Electronics Corp ROCO:6266
91 GF Score
Price NT$25.05
GF Value NT$30.96
Valuation Modestly Undervalued
! 2 Warning Signs
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What is Top Union Electronics Volatility?

Top Union Electronics ROCO:6266 -0.20% 91 Volatility is 8.89% as of Jul. 23, 2026. GuruFocus rates ROCO:6266 with a GF Score™ of 91/100 and a GF Value™ of NT$30.96 (Modestly Undervalued). 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 (2026-07-23), Top Union Electronics's Volatility is 8.89%.


Top Union Electronics  (ROCO:6266) 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.


Top Union Electronics Volatility Related Terms


ROCO:6266 vs AMAT, LRCX, KLAC: Volatility Comparison

For the Semiconductor Equipment & Materials subindustry, Top Union Electronics'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.


Top Union Electronics Volatility vs Semiconductors Industry

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

* The bar in red indicates where Top Union Electronics's Volatility falls into.


ROCO:6266
91GF Score
Top Union Electronics Corp ROCO:6266
Volatility is just one metric. See GF Score™, valuation, warning signs, and more.
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Top Union Electronics  (ROCO:6266) 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 8.89% mean?
Top Union Electronics (ROCO:6266) has a Volatility of 8.89% as of Jul. 23, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Top Union Electronics and its competitors.
Is Top Union Electronics' Volatility too high?
Top Union Electronics' current Volatility is 8.89%. Overall, Top Union Electronics has a GF Score™ of 91/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Top Union Electronics' Volatility compare to AMAT and LRCX?
Top Union Electronics' Volatility of 8.89% 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 Top Union Electronics and its competitors. Top Union Electronics's current Volatility is 8.89%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Top Union Electronics stock overvalued right now?
Based on GuruFocus' analysis, Top Union Electronics (ROCO:6266) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$30.96, compared to a current price of NT$25.05 — trading 19.1% below its estimated fair value. The current Volatility is 8.89%. Top Union Electronics' overall GF Score™ is 91/100 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 Top Union Electronics (ROCO:6266), the current Volatility is 8.89% as of Jul. 23, 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 Top Union Electronics (ROCO:6266) Overvalued in 2026?

Based on GuruFocus' analysis, Top Union Electronics stock appears to be undervalued. The current stock price of NT$25.05 is trading 19.1% below its estimated GF Value™ of NT$30.96. GuruFocus considers Top Union Electronics to be Modestly Undervalued.

Key valuation signals for ROCO:6266:

  • Volatility: 8.89%
  • GF Value™: NT$30.96 vs. price of NT$25.05 (19.1% below fair value)
  • GF Score™: 91/100 with 2 warning signs

No single metric tells the full story. See the ROCO:6266 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Top Union Electronics Business Description

Address No. 480, Niupu East Road, Xiangshan District, Hsinchu, TWN, 30091
Top Union Electronics Corp is principally engaged in the design, manufacture, and technical support of electronic products and communication equipment, as well as providing surface mount technology (SMT) services, processing, and international trade business. The company operates in America, Taiwan, and China, of which it derives maximum revenue.
91GF Score

Get the complete analysis for ROCO:6266

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

NT$25.05
Price
NT$30.96
GF Value