Beta Portfolio
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Beta Portfolio calculator is an online tool that helps calculate the beta of an investment portfolio. Beta is a risk measure that indicates the volatility of an asset in relation to the market as a whole. It is calculated as the sum of the weights of the assets multiplied by their respective betas.
The formula used to calculate the portfolio beta is Σ w_i·β_i, where w_i is the weight of asset i in the portfolio and β_i is the beta of asset i. This means that the higher the weight of an asset with a high beta, the higher the risk of the portfolio.
The Beta Portfolio calculator is useful for investors who want to evaluate the risk of their portfolio and make informed decisions about asset allocation. It can be used to calculate the beta of a portfolio of stocks, bonds, investment funds, among others. It is essential to remember that beta is only one measure of risk and should not be used as the sole criterion for making investment decisions.
Furthermore, it is crucial to be careful when using the calculator, as the results depend on the accuracy of the input data. It is essential to use up-to-date and reliable data to obtain accurate results. Additionally, it is vital to consider other risk factors, such as liquidity and correlation between assets, to have a comprehensive view of the portfolio's risk.
Frequently asked questions
What is the beta of a portfolio?
The beta of a portfolio is a risk measure that indicates the volatility of the portfolio in relation to the market as a whole. It is calculated as the sum of the weights of the assets multiplied by their respective betas.
How to calculate the beta of a portfolio?
The beta of a portfolio is calculated using the formula Σ w_i·β_i, where w_i is the weight of asset i in the portfolio and β_i is the beta of asset i.
Why is beta important for investors?
Beta is important for investors because it helps evaluate the risk of the portfolio and make informed decisions about asset allocation. Additionally, beta can be used to compare the performance of different portfolios.
What are the main factors that affect the beta of a portfolio?
The main factors that affect the beta of a portfolio include the weights of the assets, the betas of the assets, and the correlation between the assets.
How to use the Beta Portfolio calculator?
To use the Beta Portfolio calculator, simply enter the weights and betas of the assets in your portfolio and click the calculate button. The calculator will provide the beta of your portfolio.