Tehran Stock Exchange's main index, TEDPIX, gained 563.74 points or 0.03% on Wednesday to end at 2,202,656.96, while its equal-weighted index gained 0.37%.
About 8.36 billion shares worth 63.33 trillion rials ($140.74 million) changed hands for the day. Trading at TSE and over-the-counter Iran Fara Bourse starts on Saturday and ends Wednesday.
Sina Chemical Industries Company led the winners, as its shares jumped by 8.56% to 4,440 rials per share.