A beta above 1 means the stock is more volatile, while a beta below 1 means it is less volatile. Calculating beta involves comparing the stock’s past price movements to market indices.

To calculate beta, investors divide the covariance of an individual stock (say, Apple) with the overall market, often represented by the Standard & Poor’s 500 Index, by the variance of the ...

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 ...