Doha, December 20 (QNA) - Qatar Exchange index gained 111.37 points (1.34%) this week closing at 8,442.51 points. The trading value this week reached QR 668,061,400.46 decreasing by 9.30% compared to QR 736,521,953.59 last week. The trading volume decreased by 3.88% to reach 13,087,470 shares against 13,615,496 shares, while the number of transactions fell by 15.18% to reach 9,133 transactions compared to 10,768 transactions for the last week. The Market capitalization rose by 1.24% to reach QR 462,807,670,440.70 compared to QR 457,161,011,969.76 at the end of the previous week. From the 42 listed companies 32 ended this week higher, while seven fell and three remained unchanged. The Industries Qatar led traded value this week by 25.57% of the total traded value followed by QNB with 18.12% and Masraf Al Rayan, which ranked third with 10.65%. The Banking and Financial sector led the trading value this week with 46.06% of the total traded value, followed by Industrials sector with 34.91%. The Consumer Goods and Services sector ranked third with 8.05% while the Transportation sector has accounted for 3.72%. The Banking and Financial sector led traded volume this week with 45.19% of the total traded volume, followed by Industrials sector with 20.93%. The Consumer Goods and Services sector ranked third with 9.77% and the Transportation sector accounted for 8.19%. The Banking and Financial sector led the traded number of transactions during this week by 38.41% of the total number of transactions while the Industrials sector accounted for 26.72%; the Consumer Goods and Services sector accounted for 12.12% and Transportation sector accounted for 8.28%.