Diamond Biotechnology Co (ROCO:6815) Beta: 0.7990 (As of Jul. 18, 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.
Reviewed by: Charlie Tian Charlie Tian
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:6815 Diamond Biotechnology Co Ltd ROCO:6815
80 GF Score
Price NT$29.70
GF Value NT$48.10
Valuation Possible Value Trap
! 7 Warning Signs
View Full Analysis

What is Diamond Biotechnology Co Beta?

Diamond Biotechnology Co ROCO:6815 +3.85% 80 Beta is 0.7990 as of Jul. 18, 2026. GuruFocus rates ROCO:6815 with a GF Score™ of 80/100 and a GF Value™ of NT$48.10 (Possible Value Trap). The stock has 7 warning signs investors should review.

Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. As of today (2026-07-18), Diamond Biotechnology Co's Beta is 0.7990.


Diamond Biotechnology Co  (ROCO:6815) 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)


Diamond Biotechnology Co Beta Related Terms


Diamond Biotechnology Co Beta Historical Data

* Premium members only.

The historical data trend for Diamond Biotechnology Co'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.

Diamond Biotechnology Co Beta Chart

Diamond Biotechnology Co Annual Data
Trend Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Beta
Get a 7-Day Free Trial Premium Member Only 0.00 0.00 0.75 0.80 0.00

Diamond Biotechnology Co Semi-Annual Data
Dec17 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 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 0.75 0.99 0.80 0.00 0.00

ROCO:6815 vs ABT, SYK, MDT: Beta Comparison

For the Medical Devices subindustry, Diamond Biotechnology Co'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.


Diamond Biotechnology Co Beta vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Diamond Biotechnology Co's Beta distribution charts can be found below:

* The bar in red indicates where Diamond Biotechnology Co's Beta falls into.


ROCO:6815
80GF Score
Diamond Biotechnology Co Ltd ROCO:6815
Beta is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Diamond Biotechnology Co 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 0.7990 mean?
Diamond Biotechnology Co (ROCO:6815) has a Beta of 0.7990 as of Jul. 18, 2026. Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. View historical data for Diamond Biotechnology Co and its competitors.
Is Diamond Biotechnology Co's Beta too high?
Diamond Biotechnology Co's current Beta is 0.7990. Overall, Diamond Biotechnology Co has a GF Score™ of 80/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Diamond Biotechnology Co's Beta compare to ABT and SYK?
Diamond Biotechnology Co's Beta of 0.7990 can be compared against companies in the Medical Devices & Instruments 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 Medical Devices & Instruments company?
A good Beta depends on the Medical Devices & Instruments 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 Diamond Biotechnology Co and its competitors. Diamond Biotechnology Co's current Beta is 0.7990. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Diamond Biotechnology Co stock overvalued right now?
Based on GuruFocus' analysis, Diamond Biotechnology Co (ROCO:6815) is currently considered Possible Value Trap. The stock's GF Value™ is NT$48.10, compared to a current price of NT$29.70 — trading 38.3% below its estimated fair value. The current Beta is 0.7990. Diamond Biotechnology Co's overall GF Score™ is 80/100 with 7 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 Diamond Biotechnology Co (ROCO:6815), the current Beta is 0.7990 as of Jul. 18, 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 Diamond Biotechnology Co (ROCO:6815) Overvalued in 2026?

Based on GuruFocus' analysis, Diamond Biotechnology Co stock appears to be undervalued. The current stock price of NT$29.70 is trading 38.3% below its estimated GF Value™ of NT$48.10. GuruFocus considers Diamond Biotechnology Co to be Possible Value Trap.

Key valuation signals for ROCO:6815:

  • Beta: 0.7990
  • GF Value™: NT$48.10 vs. price of NT$29.70 (38.3% below fair value)
  • GF Score™: 80/100 with 7 warning signs

No single metric tells the full story. See the ROCO:6815 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Diamond Biotechnology Co Business Description

Address No. 45, Section 2, Fuxing South Road, Da'an District, 11th Floor, Taipei, TWN
Diamond Biotechnology Co Ltd is engaged in the research and development of medical equipment, and medical consumables. It also manufactures and sells medical beauty-level skincare products.
80GF Score

Get the complete analysis for ROCO:6815

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

NT$29.70
Price
NT$48.10
GF Value