Financial Tribune - Almost all of the symbol tickers of listed companies in Tehran Stock Exchange were in the red on Tuesday as the selloff drags on in the stock market.

TSE�s benchmark lost more than 10,800 points for the day to reach 308, 978.9, sending TEDPIX 3.4% lower, the biggest since May 6, Donyaye Bourse reported.

Instead of being influenced by a particular factor, such as a slump in global markets, volatilities in foreign exchange market and financial records of listed companies, the downturn was driven mainly by investors� fear of further losses.

The shares of 315 companies recorded negative prices on Tuesday, accounting for 97% of the total, with losses amounting to 400 trillion rials ($3.5 billion).