Employing quantitative techniques has been dramatically increased in financing industry during 20 recent years. These models
have been primarily utilized in risk management and through measurement models of risk different sources. Fama-French Asset
Pricing Model has been explored to select stocks in Tehran Security and Exchange Organization (TSEO) in this study. The time
period (2008-2012) has been used to test hypotheses. Statistical population of this study includes stocks in all admitted
enterprises in Bourse Market. Stocks of some enterprises have entered in and also exited from bourse market within period of this
survey. Some constraints have been exerted to exclude these enterprises from domain of this study in order to improve reliability
of study as well as reducing negative effects of such stocks. In this course, multivariate and three- variable regression model was
primarily employed to compute expected efficiency rate and then the given portfolios were compared according to criteria
including portfolio real efficiency, portfolio risk, and market efficiency index. The monthly, quarterly, and annual time-series of
data have been utilized to test hypotheses. Statistical techniques were used to test hypotheses along with three- variable
regression, Kolmogorov- Smirnov test and Durbin- Watson statistic, and also P-P Plot and scatter diagram (homogeneity of
variance) as well as Pearson’s correlation coefficient test. 