The Saudi Stock Exchange in Riyadh started the week positively as the benchmark index Tasi closed 0.53% higher at 6,608.6 points. Shares of Islamic insurer Weqaya Takaful Insurance and Reinsurance gained 10% to reach SR22.05. Petrochemical giant Sabic dipped 0.47%, ending at SR106.75. Mobile Telecommunications Company Saudi Arabia, known as Zein KSA, advanced 0.71% to reach SR7.05. Out of 145 shares traded, 118 gained, 12 declined and 15 ended flat.