The Qatar Exchange down on Sunday 40.23 points or 0.47% to 8,536.63 points from the previous closing of 8,576.86 points. The volume of shares traded fell to 4,309,506 from 4,600,788 Thursday, and the value of shares decreased to QR267,043,020.98 from QR354,832,543.05 Thursday. Among the top losers were Qatar National Bank whose share dropped 0.66% to QR134.50, Electricity and Water lost 0.71% to QR139.00, Islamic Insurance fell 1.15% to QR51.70 and Industries Qatar down 0.56% to QR160.00. Today the Qatar Banking and Financial sector lost 0.48 points while the Insurance sector up 1.31 points. The Qatar industrial sector dropped 0.43 points and the Services sector fell 0.48 points.