One of the primary questions in asset management is to find good combinations of different assets and this has been an interesting area of research for over half a century. The proposed model of this paper uses decision makers' feedbacks based on multiple criteria decision making technique to find an appropriate portfolio. We first select some important financial criteria and then using decision makers' opinions and by implementation of some fuzzy analytical network analysis we find appropriate weights of the asset. The proposed model uses two multiple criteria techniques namely TOPSIS and VIKOR and the model is examined for some real-world data from Tehran Stock Exchange. The results of the implementation of the proposed model have been examined against Markowitz traditional model. The preliminary results indicate that the proposed model of this paper performs reasonably well compared with alternative method.

Market complexity, especially wide range of investing tools and several factors that affect them, makes it hard to make decision on selecting asset kind of investment, and it causes investors face with the problem of optimizing assets in their decisions all time. Optimization problem and determining the efficiency bounder can be solved by mathematical solutions when the total numbers of assets and existent restraints in market are low. But when real world and its conditions are considered the problems cannot be easily solved by math. This paper introduces an innovative method for solving share optimization problem based on different factors of risk and by using artificial colony of honeybee algorithm, and then compares its results with them of genetic algorithm. For this purpose information of four risk factors are collected based on models of Mean-variance Markowitz, semi variance, Mean absolute deviation and mean-variance by considering skewness. In this paper, it is shown that artificial colony of honeybee algorithm can solve all the optimizing models of portfolio by considering factors of Mean-variance, semi variance, Mean absolute deviation and variance-skewness. For showing efficiency of this algorithm, its effectiveness is studied in financial market of Tehran, Tehran Stock Exchange (TSE).

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Portfolio management has always been an issue of high importance in financial markets.This paper is an attempt to introduce a new technique of portfolio selection. After presenting a review of literature on factors influencing portfolio selection, the importance of each factor is determined in regards to experts' opinions and a weight is assigned to each factor using fuzzy network analytic process technique. Consequently, using an approach based on TOPSIS and similarity, selected stocks were ranked. After depicting efficient frontiers of the top ranks obtained from both approaches, using genetic algorithm, Sharpe ratio was used in order to examine model's performance.

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