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.

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 can also calculate the volatility of an entire portfolio, but this formula is far more complex. To keep things simple, we will explain the formula assuming a two-stock portfolio. The data ...