The Qatar Exchange was down on Wednesday 44.36 points or 0.52% to 8,504.94 points from the previous closing of  8,549.30. The volume of shares traded  up to 4,160,864 from 3,392,498 Tuesday, and the value of shares increased to QR175,832,050.96 from QR126,356,217.67   Tuesday Among the top losers were Commercial Bank of Qatar whose share dropped 1.07% to QR74.00 , Electricity and Water lost 0.90 to QR132.80, Barwa fell 1.82% to QR29.75 and Doha Bank down 0.89% to QR55.50. Today the Qatar Banking and Financial sector down 12.36 points while the Insurance sector dropped 2.05 points. The Qatar industrial sector lost 8.22 points and the Services sector down 27.61 points.