To calculate the beta of a stock, you need historical price data for both the stock and the market index. This data is typically available through financial news websites, stock market apps ...

This tactic will help reduce the downswings but may also mean your portfolio doesn't rise as high during up markets because beta goes both ways. A stock with a beta of 0.5 is half as volatile as ...

This article, though, focuses on a stock’s beta. Probably the best way to calculate beta is via a spreadsheet because of the vast amount of necessary data. Collecting historical price data for a ...

You'll find the beta under the heading "Stock Price History." The beta on Yahoo! compares the activity of the stock over the last five years to that of the S&P 500 Index. For example, as of Jan ...