Portfolio Optimization Using Credibility Theory

In this chapter, we present a hybrid bi-objective credibility-based fuzzy mathematical programming model for portfolio selection under fuzzy environment. The expected value and chance constrained programming techniques are used to formulate the mathematical model in which return, risk and liquidity are considered for measuring performance of an asset. The model seeks to maximize the portfolio return while minimizing the portfolio risk. The portfolio liquidity is considered as a constraint. To solve the fuzzy optimization model, a two-phase approach is discussed