This model is an example of the classic Markowitz portfolio selection optimization model. We want to find the fraction of the portfolio to invest among a set of stocks that balances risk and return. It is a Quadratic Programming (QP) model with vector and matrix data for returns and risk, respectively. This is best suited to a matrix formulation, so we use the Gurobi Python matrix interface. The basic model is fairly simple, so we also solve it parametrically to find the efficient frontier.
Click on the button below to access the example in Google Colab, which is a free, online Jupyter Notebook environment that allows you to write and execute Python code through your browser.
Check out the Colab Getting Started Guide for full details on how to use Colab Notebooks as well as create your own.
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