Monday broker round-up - UPDATE

Rio Tinto: Goldman Sachs upgrades from neutral to buy.Whitbread: Credit Suisse downgrades from outperform to neutral, 1,818p target maintained.Weir: Credit Suisse ups target from 2,200p to 2,275p, outperform rating kept.ARM Holdings: Nomura raises target from 570p to 580p, neutral recommendation kept.Rolls-Royce: UBS raises target from 600p to 650p, sell rating unchanged.Reckitt Benckiser: Nomura reiterates buy stance and 3,900p target.Premier Oil: UBS downgrades from buy to neutral, 430p target unchanged.London Stock Exchange: Credit Suisse raises target from 850p to 890p, neutral rating unchanged; UBS raises target from 780p to 857p, neutral rating unchanged; Nomura keeps neutral rating and 925p target.Petropavlovsk: Credit Suisse raises target from 900p to 920p, neutral rating kept.Taylor Wimpey: UBS ups target from 36p to 41p, neutral rating kept. Rio Tinto Weir Group Whitbread Taylor Wimpey Rolls-Royce