Tuesday broker round-up UPDATE

Alternative Networks: Westhouse Securities upgrades from neutral to add with a target price of 350p.Andes Energia: Westhouse Securities initiates with a target price of 60p and a buy recommendation.Andor Technology: Investec reduces target price from 525p to 360p downgrading from buy to hold.AVEVA Group: Citi upgrades to buy from neutral with an unchanged target price of 2450p.Daisy Group: Liberum Capital ups target price from 135p to 140p maintaining a buy recommendation.Genel Energy: Citi increases target price from 886p to 1150p upgrading to buy.GKN: Credit Suisse ups target price from 315p to 355p reiterating an outperform rating.Greene King: JP Morgan raises target price from 740p to 860p leaving its overweight rating unaltered.Gulf Keystone Petroleum: Cantor Fitzgerald reduces target price from 520p to 235p, while leaving its buy recommendation unchanged.G4S: Goldman Sachs lowers target price from 200p to 194p and reiterates its strong sell recommendation.Hays: Goldman Sachs shifts target price from 117p to 112p and keeps a buy recommendation.Heritage Oil: Citi reduces traget price from 211p to 165p, while staying with its neutral rating.HSBC Holdings: Citi upgrades to buy keeping target price of 770p.Invensys: Credit Suisse moves target price from 368p to 390p and retains a neutral rating.Johnson Matthey: Exane initiates with a target price of 3200p and an outperform rating.Laird: Credit Suisse lowers target price from 200p to 170p staying with its underperform rating.Mar City: While raising its target price from 5.5p to 11p, WH Ireland downgrades from buy to neutral.Michael Page: Goldman Sachs cuts target price from 459p to 449p, while its neutral rating remains unchanged.Oxford Instruments: Investec reduces target price from 1600p to 1490p maintaining a hold recommendation.Real Estate Investors: Liberum Capital shifts target price from 53p to 53.50p and keeps a buy recommendation.Renishaw: Credit Suisse reduces target price from 1985p to 1715p retaining a neutral rating.Robert Walters: Goldman Sachs lowers target price from 250p to 239p and maintains a neutral rating.RSA Insurance Group: Credit Suisse moves target price from 125p to 138p upgrading from neutral to outperform.SDL: Panmure Gordon takes target price from 480p to 400p, while reiterating a hold recommendation. Investec reduces target price from 570p to 320p leaving its buy recommendation unaltered. Canaccord Genuity cuts target price from 371p to 308p keeping a hold recommendation.Senior: Credit SUisse increases target price from 270p to 305p and keeps an outperform rating.Standard Chartered: Credit Suisse cuts target price from 1400p to 1360p and retains an underperform rating. Bank of America reduces target price from 1950p to 1850p, while keeping a buy recommendation.SThree: Goldman Sachs reduces target price from 423p to 383p and downgrades to neutral.Talk Talk Telecom: Morgan Stanley ups target price from 240p to 280p and upgrades to overweight.Travis Perkins: Goldman Sachs moves target price from 1708p to 1720p, while downgrading to neutral.Tullow Oil: Citi cuts target price from 1350p to 1170p and retains a neutral rating.Vesuvius: Credit Suisse cuts target price from 400p to 345p and downgrades to underperform.Whitbred: Panmure Gordon takes target price from 2500p to 2688p staying with a hold recommendation. Tullow Oil Senior HSBC Holdings Robert Walters Hays Oxford Instruments Johnson Matthey Standard Chartered Gulf Keystone Petroleum Travis Perkins Genel Energy Renishaw Whitbread Vesuvius REI