Optimum Portfolio Selection Using Value at Risk in Tehran Stock Exchange

This research aims to use VaR as a risk measure to find the optimum portfolio in Tehran Stock exchange. In this research VaR which is calculated with parametric method by using the 15 daily returns of 100 companies from March 21, 2001 to November 22, 2007 was added to the Markowitz model of portfolio optimization as additional constraint. by changing the accepted VaR and accepted confidence level, various portfolios designed. Finally the findings indicate that adding VaR constraint to the Morkowitz model may limit the efficient frontier, change it to a point or eliminate it completely.this research differes from comparable research in using the backtesting in a novel way and case study of Tehran Stock Exchange.