Portfolio optimization with robust possibilistic programming

Document Type: Original Article


1 Prof., Department of Industrial Management, Faculty of management and accounting, Allameh Tabataba'i University, Tehran, Iran.

2 Ph.D. Candidate, Department of Finance, Faculty of management and Accounting, Allameh Tabataba'i University, Tehran, Iran.



Portfolio selection is one of the most important financial and investment issues. Portfolio selection seeks to allocate a predetermined capital (wealth) over one or multiple time periods between assets and stocks in a such way that the wealth of investor (portfolio owner) is maximized the risks are minimized. In the paper, we first propose a mathematical programming model for Portfolio selection to maximize the minimum amount Sharpe ratios of portfolio in all periods (max-min problem). Then, due to the uncertain property of the input parameters of such a problem, a robust possibilistic programming model (based on necessity theory) has been developed, which is capable of adjusting the robust degree of output decisions to the uncertainty of the parameters. The proposed model has been tested on 27 companies active in the Tehran stock market. At the end, the results of the model demonestrate the good performance of the robust possibilistic programming model.


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