Tehran Stock Exchange announced the following index changes as a result of the quarterly TEDFIX 30 Index revision. These changes have been effective since the market's opening on December 24, 2011. The TEDFIX 30 is a total return index weighted by free-float market capitalization that measures the performance of 30 most traded stocks listed on Tehran Stock Exchange (TSE). In this revision, Pasargad Bank and Ansar Bank were added to and North Drilling Co. and National Investment Company of Iran were removed from the index. The following table indicates the companies listed in this index in the third quarter of the Iranian year 1390. Iran Telecommunications National Copper Industries Isfahan Mobarakeh Steel Pasargad Bank Ghadir Investment Gol-E-Gohar Iron Ore Chadormalu Mineral & Ind. Bank Parsian Bank Mellat Tejarat Bank EN Bank Calcimine Saderat Bank MAPNA Saipa Civil Pension Fund Investment Iran Khodro Industrial Group Khouzestan Steel Khark Petrochemic.