The Qatar Exchange down on Tuesday 6.90 points or 0.08% to 8,573.11 points from the previous closing of 8,580.01. The volume of shares traded fell to 5,128,003 from 5,280,587 Monday, and the value of shares increased to QR331,969,603.58 from QR325,502,542.44 Monday. Among the top losers were Commercial Bank of Qatar whose share dropped 0.76% to QR65.40, International Islamic Bank lost 0.77% to QR51.70, Doha Insurance fell 2.70% to QR25.20 and Qatar Navigation down 0.90% to QR65.80. Today the Qatar Banking and Financial sector fell 0.09 points while the Insurance sector added 0.68 points. The Qatar industrial sector up 0.57 points and the Services sector lost 0.85 points.