Rio Tinto: Investec cuts target from 4,170p to 4,045p, buy rating kept.BG Group: Nomura keeps buy and 1,850p target.Genel Energy: Investec reiterates buy and 1,360p target.Standard Chartered: Nomura reiterates buy and 1,800p target.African Barrick Gold: Investec reduces target from 634p to 621p, hold recommendation maintained.Bellway: Evolution Securities remains a buyer with a 850 price target.