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, or ...

In a previous post, we presented a method for calculating a stock beta and implemented it in Python.

Beta measures a stock’s volatility compared to the overall market. A beta above 1 means the stock is more volatile, while a beta below 1 means it is less volatile. Calculating beta involves ...

Multiply those proportions by the beta of each stock. For example, if Apple makes up 0.30 of the portfolio and has a beta of 1.36, then its weighted beta in the portfolio would be 1.36 x 0.30 = 0.408.

Beta is a way to quantify a stock’s systematic risk. In simple terms, systematic risk refers to investment risk related to the movement of the entire market. Beta can help you answer questions like, ...