TEHRAN- TEDPIX, the main index of Tehran Stock Exchange (TSE), gained 4,112 points on Monday.As reported, TEPIX closed at 1.427 million points, as over 3.55 billion securities worth 20.816 trillion rials (about $74.8 million) were traded at the TSE.The first markets index rose 2,981 points, and the second markets index gained 8,373 points.TSE is on thefourIranianstock exchanges, the other three ones are IranMercantile Exchange (IME),IranEnergy Exchange (IRENEX), and Irans over-the-counter (OTC) market, known asIran Fara Bourse(IFB).MA/MA