The benchmark of Tehran Stock Exchange, TEDPIX, gained 15,340.45 points and climbed 1.05% ending trade at 1,474,112.99.
The TSE’s equal-weighted index gained more than 1.4% and small caps continued to outperform for third sessions in a row.
Retail trade shot up 16% from the earlier session to reach 61.1 trillion rials ($226 million) on Sunday.
At the end of the session, 398 tickers gained and 85 fell, representing 17% of the total active tickers.
About 12.48 billion shares worth 58.10 trillion rials ($215m) changed hands at TSE for the day.
Silica Sand Supplier Company was the main winner as its shares went up 4.99% to 3,722 rials per share.
West Cement Industries Company incurred the biggest loss among all TSE-listed companies and went down 4.19% to 20,560 rials per share.
Sabanour Mining and Industrial Development Company contributed the most to the benchmark's fall, followed by Iran Khodro Investment Development Company, Esfahan Oil Refining Company and Pars Oil Company.
Mobarakeh Steel Company gave the biggest boost to the benchmark index followed by Omid Investment Management Group Company, Iran Khodro and Mellat Bank.
IFX Adds 0.9%
Iran Fara Bourse main index, IFX, gained 174.48 points or 0.88 % to close Sunday trade at 20,062. About 4.6 billion shares and securities valued at 51.61 trillion rials ($191m) were traded at the junior exchange for the day.
Kerman Province Development Investment Company had the highest number of traded shares as 380.22 million of its shares worth 330.53 billion rials ($1.22m) were traded.
Chaharmahal Food Products and Sugar Company, Damavand Power Generation Company, Ghadir Industry and Investment Development Company and Behpak Industrial Company had the most negative impact on IFX.
Arya Sasol Polymer Company gave the biggest boost to IFX, followed by Pasargad Insurance Company, Marun Petrochemical Company and Shahid Tondgooyan Petrochemical Company.