The Qatar Exchange down on Sunday 100.17 points or 1.18% to 8,381.03 points from the previous closing of 8,481.20 points. The volume of shares traded up to 5,785,436 from 3,303,018 Thursday, and the value of shares increased to QR181,813,824.17 from QR139,257,572.03 Thursday. Among the top losers were Industries Qatar whose share dropped 2.47% to QR153.80, Commercial Bank of Qatar lost 0.16% to QR64.00, Qatar Islamic Bank fell 2.72% to QR68.00 and National Leasing down 2.51% to QR32.95. Today the Qatar Banking and Financial sector lost 0.86 points while the Insurance sector down 1.19 points. The Qatar industrial sector dropped 1.92 points and the Services sector fell 0.54 points.