Mobile telecommunications stocks are higher after Vodafone said revenue rose 9.3% in the quarter to June, helped by positive exchange rates and M&A activity, though organic service revenue fell due to weakness in Europe.The group also said it is trading in line with management's outlook issued in May 2009 for the current financial year.Shares in aerospace and defence stocks are lower, including those of VT Group which today announced an extension to its contract to provide facilities management services to the British Navy.Top performing sectors so far todayMobile Telecommunications 2,761.32 +2.41%Automobiles & Parts 2,302.99 +2.34%General Financial 4,625.99 +1.95%Banks 4,306.64 +1.87%Industrial Metals 4,253.86 +1.56%Bottom performing sectors so far todayGas, Water & Multiutilities 3,532.51 -1.18%Aerospace and Defence 2,530.11 -0.92%Tobacco 21,584.90 -0.89%Food & Drug Retailers 4,270.98 -0.86%Electricity 6,157.78 -0.76%