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.
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.
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 (2026-07-14), Tons Lightology's Volatility is 9.15%.
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.
Tons Lightology Volatility Related Terms
ROCO:4972 vs SN, SGI, MHK: Volatility Comparison
For the Furnishings, Fixtures & Appliances subindustry, Tons Lightology'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.
Tons Lightology Volatility vs Furnishings, Fixtures & Appliances Industry
For the Furnishings, Fixtures & Appliances industry and Consumer Cyclical sector, Tons Lightology's Volatility distribution charts can be found below:
* The bar in red indicates where Tons Lightology's Volatility falls into.
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.
Tons Lightology (ROCO:4972) has a Volatility of 9.15% as of Jul. 14, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Tons Lightology and its competitors.
Is Tons Lightology's Volatility too high?
Tons Lightology's current Volatility is 9.15%. Overall, Tons Lightology has a GF Score™ of 65/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Tons Lightology's Volatility compare to SN and SGI?
Tons Lightology's Volatility of 9.15% can be compared against companies in the Furnishings, Fixtures & Appliances 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 Furnishings, Fixtures & Appliances company?
A good Volatility depends on the Furnishings, Fixtures & Appliances 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 Tons Lightology and its competitors. Tons Lightology's current Volatility is 9.15%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tons Lightology stock overvalued right now?
Based on GuruFocus' analysis, Tons Lightology (ROCO:4972) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$20.13, compared to a current price of NT$16.80 — trading 16.5% below its estimated fair value. The current Volatility is 9.15%. Tons Lightology's overall GF Score™ is 65/100 with 3 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 Tons Lightology (ROCO:4972), the current Volatility is 9.15% as of Jul. 14, 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 Tons Lightology (ROCO:4972) Overvalued in 2026?
Based on GuruFocus' analysis, Tons Lightology stock appears to be undervalued.
The current stock price of NT$16.80 is trading 16.5% below its estimated GF Value™ of NT$20.13.
GuruFocus considers Tons Lightology to be Modestly Undervalued.
Key valuation signals for ROCO:4972:
Volatility: 9.15%
GF Value™: NT$20.13 vs. price of NT$16.80 (16.5% below fair value)
No single metric tells the full story. See the ROCO:4972 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Tons Lightology Inc engages in the design, manufacture, and sale of commercial lighting fixtures. The company's operating segment includes Tons Lightology Inc; Titan Lighting Co. Ltd, Zhongshan Tons Lighting Co. Ltd, and StrongLED Lighting System (Cayman) Co. Ltd. It generates maximum revenue from the Tons Lightology Inc. segment. Geographically, it derives a majority of revenue from Europe and also has a presence in Asia, Oceania, and other countries. It focuses on indoor lighting and outdoor lighting. The company's products are used for museum/gallery, commercial, hotel, club, office, and Outdoor applications.
65GF Score
Get the complete analysis for ROCO:4972
Volatility is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCO:4972 has been successfully added to your 
