Prices on shares in selected power companies and in companies with largetrading activity in electricity:October 20COMPANY Latest close Change % VolumeSTOCKHOLM (SEK)Arise Windpower 41,80 0,72 7 476Eolus Vind 43,30 -0,69 32 812Holmen 209,50 0,72 871Stora Enso 67,40 -0,22 5 140COPENHAGEN (DKK)Vestas Wind Systems 198,10 -4,62 2 574 506HELSINKI (EUR)Fortum 19,72 -1,40 1 937 690Stora Enso 7,26 0,97 3 037OSLO (NOK)Arendals...