Friday broker round-up

ASOS: Jefferies keeps buy rating and 2,199p target.AstraZeneca: Morgan Stanley upgrades to equal weight.Aviva: AlphaValue downgrades to add, target lifted from 385p to 389p.Barclays: Deutsche Bank upgrades to buy.Dixons: Nomura keeps neutral rating and 20p target.Legal & General: Credit Suisse downgrades to neutral, target cut from 144p to 142p.May Gurney: Investec maintains sell rating and 100p target.Morrisons: Nomura keeps neutral rating and 300p target.Oxford Catalysts: Peel Hunt upgrades to buy, target lifted from 34p to 69p.Reed Elsevier: UBS ups target from 710p to 770p, buy rating kept.SThree: Investec maintains buy rating and 340p target.UNITE Group: Oriel Securities upgrades to add.Valiant Petroleum: Peel Hunt downgrades to hold, target cut from 600p to 525p.Vodafone: Jefferies maintains hold rating and 180p target.Whitbread: Investec raises target from 1,500p to 1,650p, sell rating kept.BC