St Shine Optical Co (ROCO:1565) Beta: -0.3043 (As of Jul. 17, 2026)

St Shine Optical Co  (ROCO:1565) 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)

St Shine Optical Co Beta Related Terms

The historical data trend for St Shine Optical 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.

St Shine Optical Co Beta Chart

St Shine Optical Co Annual Data
	Trend	Dec16	Dec17	Dec18	Dec19	Dec20	Dec21	Dec22	Dec23	Dec24	Dec25
Beta		Get a 7-Day Free Trial					0.90	0.89	0.84	0.66	0.00

St Shine Optical Co 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															0.66	0.00	0.00	0.00	0.00

ROCO:1565 vs ISRG, BDX, MDLN: Beta Comparison

For the Medical Instruments & Supplies subindustry, St Shine Optical 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.

St Shine Optical Co Beta vs Medical Devices & Instruments Industry

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

* The bar in red indicates where St Shine Optical Co's Beta falls into.

St Shine Optical 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.

St Shine Optical Co Business Description