Azerbaijan, Baku, August 5/ Trend R.Zamanov/
The main index of Tehran Stock Exchange (TSE) faced a 132-unit drop on Sunday, stopping at 57,264 units, the ISNA News Agency reported.
The Persian Gulf Holding was the main cause of the drop, with a 110-unit drop.
More than 586 million shares worth over 2.1 trillion rials ($67.5 million based on the price of USD at the free market) were traded at the TSE on Sunday.
TSE's main index (TEPIX) had hit 39,000 units in the second working day of the current Iranian calendar year (which started on March 21).
Founded in 1967, the Tehran Stock Exchange has been one of the world's best performing stock markets in recent years and has ranked as the best stock exchange index in Europe, Africa and Middle East in 2010 in terms of performance of the main index.
The TSE's annual growth rate of main indices was also ranked as the second best among all members of the World Federation of Exchanges (WFE).
The WFE is the association of 52 regulated exchanges around the world which aims to develop and promote standards in markets.