Tuesday broker round-up UPDATE

Admiral Group: Canaccord Genuity raises target price from 1050p to 1215p, but reiterates its sell recommendation.BAE Systems: Investec moves target price from 325p to 375p retaining a hold recommendation.Balfour Beatty: Numis lowers target price from 330p to 300p and downgrades to add.BHP Billiton: Goldman Sachs downgrades to neutral from buy. Espirito Santo initiates with a target price of 1703p and a sell recommendation.Bioquell: Investec shifts target price from 130p to 136p and maintains a hold recommendation.Brammer: Investec revises target price from 390p to 450p and leaves its buy recommendation unaltered.Cairn Energy: Investec cuts target price from 340p to 310p and downgrades from buy to hold.Carnival: Numis reduces target price from 2750p to 3000p downgrading to add.Centaur Media: Westhouse Securities upgrades from neutral to add with a target price of 53p.Domino Printing Sciences: Numis downgrades to hold with a target price of 675p.Eurasian Natural Resources: Societe Generale cuts target price from 385p to 325p keeping a hold recommendation.Fresnillo: Deutsche Bank reduces target price from 1705p to 1300p and downgrades to sell.Greggs: Canaccord Genuity increases target price from 380p to 485p and downgrades to hold.Hays: Investec ups target price from 94p to 106p keeping an add rating.Helius Energy: Numis shifts target price from 17p to 20p reiterating a buy recommendation.Home Retail Group: Exane BNP takes target price from 115p to 140p, while reiterating an underperform rating.HSBC Holdings: Shore Capital upgrades to buy.Kazakhmys: Canaccord Genuity reduces target price to 570p and reiterates a hold recommendation.Mears Group: Canaccord Genuity takes target price from 400p to 440p and retains its buy recommendation.Northgate: Jefferies ups target price from 310p to 355p and keeps a buy recommendation.Optimal Payments: Canaccord Genuity revises target price from 140p to 200p and leaves its buy recommendation unchanged.Pennant International: WH Ireland increases target price from 59p to 90p and retains its buy recommendation.Perform Group: Morgan Stanley moves target price from 430p to 590p, while leaving its overweight rating unchanged. Credit Suisse raises target price from 435p to 570p and maintains an outperform rating.Planet Payments:Canaccord Genuity increases target price from 200p to 250p and retains a buy recommendation.QinetiQ Group: Investec revises target price from 180p to 195p and leaves its hold recommendation unchanged.Regus: Credit Suisse increases target price from 155p to 190p and reiterates an outperform rating.Resolution: JP Morgan takes target price from 227p to 257p, while retaining an underweight rating.Rio Tinto: Goldman Sachs downgrades to conviction sell from neutral.Rolls-Royce Group: Investec ups target price from 1080p to 1125p, while reiterating an add rating.Rotork: Investec raises target price from 2510p to 2700p, but downgrades from hold to sell.Royal Bank of Scotland: Investec shifts target price from 290p to 300p and upgrades from sell to hold.Smiths Group: Investec takes target price from 1290p to 1430p staying with its buy recommendation.Synthomer: Numis ups target price from 239p to 260p and upgrades to buy.Telit Communications: Canaccord Genuity shifts target price from 92p to 117p and maintains its buy recommendation.Vesuvius: Investec ups target price from 360p to 400p keeping its hold recommendation.Vodafone: Jefferies raises target price from 155p to 174p maintaining a hold recommendation.Weir Group: Investec moves target price from 2340p to 2400p, while staying with its hold recommendation. Berenberg Bank raises target price from 2380p to 2552p, but downgrades from buy to hold.Xaar: Investec increases target price from 350p to 430p retaining a buy recommendation.