Tuesday broker round-up UPDATE

AG Barr: Investec cuts target price from 591p to 581p, while upgrading from add to buy. Canaccord Genuity upgrades to buy with its target price at 570p.Aquarius Platinum: Nomura reduces target price from 90p to 65p, but keeps its buy recommendation.AstraZeneca: Berenberg takes target price from 3425p to 3472p and maintains a hold recommendation.Bovis Homes Group: Deutsche Bank ups target price from 863p to 878p upgrading from hold to buy.Britvic: Investec shifts target price from 540p to 545p upgrading from add to buy. Canaccord Genuity raises target price from 380p to 420, but downgrades to sell.BTG: Jefferies moves target price from 375p to 400p maintaining a hold recommendation.Compass: Goldman downgrades to neutral from buy.CSR: Citi increases target price from 500p to 540p and leaves its neutral rating unchanged.First Group: Investec lowers target price from 200p to 110p, while upgrading from hold to add.Fresnillo: Citi reduces target price from 1120p to 1045p and reiterates a sell recommendation.Gemfields: JP Morgan cuts target price from 33p to 23p and downgrades from neutral to underweight.Gooch & Housego: N+1 Singer downgrades to hold with a target price of 515p. Investec increases target price from 520p to 580p staying with its buy recommendation.HSBC Holdings: Espirito Santo raises target price from 800p to 850p keeping a buy recommendation.ICAP: Credit Suisse downgrades to underperform with a target price of 350p.Keller Group: Investec moves target price from 1000p to 1115p reiterating a buy recommendation.Kingfisher: Jefferies ups target price from 330p to 400p and reiterates a buy recommendation.Lancashire Holdings: Westhouse Securities upgrades from neutral to add with its target price at 875p.Lonmin: Nomura shifts target price from 397p to 400p staying with its buy recommendation.National Grid: Berenberg raises target price from 700p to 740p leaving its hold recommendation unaltered.Ophir Energy: Jefferies reduces target price from 800p to 665p, while keeping its buy recommendation.Oxford Instruments: Investec places its target price (prev.: 1600p) under review, while leaving its hold recommendation unchanged.Playtech: JP Morgan raises target price from 690p to 800p and retains an overweight rating.Reed Elsevier: Panmure Gordon ups target price from 650p to 825p and reiterates a buy recommendation.Rolls-Royce Group: Exane increases target price from 1075p to 1340p maintaining an outperform rating.Workspace Group: Espirito Santo takes target price from 339p to 423p and keeps a buy recommendation. Investec ups target price from 385p to 415p reiterating its buy rating. Panmure Gordon shifts target price from 370p to 375p maintaining a hold recommendation. Kingfisher Gooch & Housego HSBC Holdings Relx Keller Oxford Instruments BTG Workspace Barr (A.G.) Fresnillo Firstgroup Compass Group Playtech Gemfields Grou.