The main Saudi Stock Exchange Index closed Tuesday, up by 80.79 points to reach 12,103.82 points, with trades worth SR 8.7 billion.The volume of traded shares reached 349 million shares, with the shares of 127 firms recording an increase in their value, while the shares of 89 firms closed at a lower price.The parallel Saudi Stock Exchange Index (Nomu) also closed up by198.53 points to reach 25,990.62 points, with trades worth SR 63 million, with the volume of traded shares reaching five million shares.Source: Qatar News Agency