Majid Elahi - Assistant Professor of Industrial Management Department, Faculty Of Social Sciences, Imam Khomeini International University,Qazvin, Iran
Zahra Amin Afshar - MS student of Industrial Management, Faculty of Social Sciences, Imam Khomeini International University, Qazvin, Iran

The most important goal of the present paper is to evaluate the efficiency of automotive and parts manufacturing branch in Tehran Stock Exchange (TSE), by using DEA technique, to select a group of desirable securities from a list of 31. The Results show that the units (7, 8, 14, 18, 19, 20, 21, 23, 24, 25 and 29) are known as superior units. Unit 7 obtained the first rank of 29 units. The units 3,10, 11, 13, 16 & 17 have surplus inputs, and 19 of the firms are classified in efficient scale.

Data Envelopment Analysis (DEA), Efficiency, Tehran Stock Exchange, market cap stocks