On a mixed day for retailers, Wm Morrison lifts supermarket groups higher, but Next is proving a drag on general retailers.Wm Morrison climbs nearly 10% after it said full year results are expected to beat previous forecasts due to continuing customer growth and cost cutting measures. Peers Sainsbury's and Tesco climb in sympathy.Fashion chain Next falls despite increasing its profit estimate for this year by £30m after a better than expected trading inspired by the hot weather in June. Fellow clothes retailer Marks & Spencer is another faller.Top performing sectors so far todayForestry & Paper 2,337.38 +2.84%Food & Drug Retailers 4,368.44 +2.77%Automobiles & Parts 1,981.51 +2.73%Health Care Equipment & Services 2,505.73 +1.96%Life Insurance 3,046.93 +1.76%Bottom performing sectors so far todayGeneral Retailers 1,505.71 -1.01%Fixed Line Telecommunications 1,672.97 -0.36%Industrial Transportation 1,590.59 -0.26%Industrial Metals 4,049.19 -0.08%