Truelight (ROCO:3234) Beta: -0.0710 (As of Jul. 21, 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:3234 Truelight Corp ROCO:3234
37 GF Score
Price NT$96.30
GF Value NT$33.55
Valuation Significantly Overvalued
! 2 Warning Signs
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What is Truelight Beta?

Truelight ROCO:3234 -4.18% 37 Beta is -0.0710 as of Jul. 21, 2026. GuruFocus rates ROCO:3234 with a GF Score™ of 37/100 and a GF Value™ of NT$33.55 (Significantly Overvalued). The stock has 2 warning signs investors should review.

Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. As of today (2026-07-21), Truelight's Beta is -0.0710.


Truelight  (ROCO:3234) Beta Explanation

Beta is a measure of the volatility, or systematic risk, of a security or a portfolio in comparison to the market as a whole. We usually compare beta to 1. A beta of 1 indicates that the security's price will move with the market. A beta of less than 1 means that the security will be less volatile than the market. A beta of greater than 1 indicates that the security's price will be more volatile than the market.

Beta is primarily used in the Capital Asset Pricing Model (CAPM) to calculate the Cost of Equity, which can be used in the calculation of WACC %. The formula of Cost of Equity is:
Cost of Equity = Risk-Free Rate of Return + Beta of Asset * (Expected Return of the Market - Risk-Free Rate of Return)


Truelight Beta Related Terms


Truelight Beta Historical Data

* Premium members only.

The historical data trend for Truelight's Beta 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.

Truelight Beta Chart

Truelight Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Beta
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1.79 1.42 0.83 0.98 0.00

Truelight Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
Beta 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 0.98 0.00 0.00 0.00 0.00

ROCO:3234 vs NVDA, AVGO, MU: Beta Comparison

For the Semiconductors subindustry, Truelight's Beta, along with its competitors' market caps and Beta 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.


Truelight Beta vs Semiconductors Industry

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

* The bar in red indicates where Truelight's Beta falls into.


ROCO:3234
37GF Score
Truelight Corp ROCO:3234
Beta is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Truelight Beta Calculation

Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. A stock's beta can be calculated by dividing the product of the covariance of the individual stock's returns and the market's returns by the variance of the market's returns over a specified period. Basically, GuruFocus uses the returns calculated over three-year period.

Frequently Asked Questions Learn more about Beta →
What does a Beta of -0.0710 mean?
Truelight (ROCO:3234) has a Beta of -0.0710 as of Jul. 21, 2026. Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. View historical data for Truelight and its competitors.
Is Truelight's Beta too high?
Truelight's current Beta is -0.0710. Overall, Truelight has a GF Score™ of 37/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Truelight's Beta compare to NVDA and AVGO?
Truelight's Beta of -0.0710 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 Beta for a Semiconductors company?
A good Beta depends on the Semiconductors industry context. However, Beta 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 Beta mean?
A high Beta can signal that a stock is expensive relative to its fundamentals. Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. View historical data for Truelight and its competitors. Truelight's current Beta is -0.0710. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Truelight stock overvalued right now?
Based on GuruFocus' analysis, Truelight (ROCO:3234) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$33.55, compared to a current price of NT$96.30 — trading 187% above its estimated fair value. The current Beta is -0.0710. Truelight's overall GF Score™ is 37/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Beta calculated?
Beta is calculated from a company's financial statements. For Truelight (ROCO:3234), the current Beta is -0.0710 as of Jul. 21, 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 Truelight (ROCO:3234) Overvalued in 2026?

Based on GuruFocus' analysis, Truelight stock appears to be overvalued. The current stock price of NT$96.30 is trading 187% above its estimated GF Value™ of NT$33.55. GuruFocus considers Truelight to be Significantly Overvalued.

Key valuation signals for ROCO:3234:

  • Beta: -0.0710
  • GF Value™: NT$33.55 vs. price of NT$96.30 (187% above fair value)
  • GF Score™: 37/100 with 2 warning signs

No single metric tells the full story. See the ROCO:3234 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Truelight Business Description

Address No.21, Prosperity Road 1, Hsinchu Science Park, Hsinchu, TWN, 300091
Truelight Corp engages in the manufacturing and supply of components for the local area networks, storage area network, fiber to the home, and metro area network. The business items of the company are design, research and development, Production, and sales, which are applied to optical fiber communication, mobile communication base station interconnection, cloud data center, 3D Sensing/Near-Field Sensing/Flood Illumination Vertical Cavity Surface Emitting Laser, Edge laser, photodiode, including components, sub-modules, Light engine/AOC and other types of products. The products of the company include VCSEL chips, FP-LD chips, DFB-LD chips, and PIN chips.
37GF Score

Get the complete analysis for ROCO:3234

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

NT$96.30
Price
NT$33.55
GF Value