Wednesday broker round-up UPDATE

Aggreko: Jefferies raises target price from 1800p to 2000p and keeps a buy recommendation. Investec ups target price from 1650p to 1700p and leaves its hold recommendation unchanged.Avingtrans: FinnCap cuts target price from 170p to 155p downgrading from buy to hold.Aviva: Jefferies initiates with a target price of 584p and a buy recommendation.Avocet Mining: Investec lowers target price from 11.76p to 7.57p and retains a hold recommendation.Fresnillo: Deutsche Bank cuts target price from 890p to 860p and maintains a hold recommendation. Numis ups target price from 1100p to 1150p keeping a buy recommendation. RBC Capital reduces target price from 1000p to 950p downgrading from outperform to neutral.Genel Energy: Deutsche Bank lowers target price from 1375p to 1350p and stays with its buy recommendation. UBS cuts target price from 1100p to 1075p and retains a neutral rating.Inmarsat: Berenberg lowers target price from 735p to 725p keeping a hold recommendation.Interserve: Numis downgrades from buy to add with a target price of 718p.Meggitt: Deutsche Bank cuts target price from 475p to 440p retaining a hold recommendation. UBS reduces target price from 505p to 470p, while staying with a neutral rating. Investec cuts target price from 530p to 480p downgrading from add to hold.Next Fifteen Communications: Westhouse Securities shifts target price from 127p to 132p keeping its add rating.Polypipe Gold: Canaccord Genuity initiates with a target price of 281p and a buy recommendation.Premier Foods: Jefferies lowers target price from 90p to 80p keeping a buy recommendation.Prudential: Jefferies initiates with a target price of 1577p and a buy recommendation.Rexam: Credit Suisse shifts target price from 540p to 545p and reiterates a hold recommendation.Rotork: UBS raises target price from 2650p to 2750p maintaining a neutral rating.Roxi Petroleum: Having had its target price under review, WH Ireland introduces a new target price of 20p and reiterates its buy recommendation.Sage: Panmure Gordon upgrades from hold to buy with a target price of 407p.Serco Group: Numis cuts target price from 360p to 295p downgrading from hold to reduce.Standard Life: Canaccord Genuity lowers target price from 430p to 410p and stays with its buy recommendation.Trinity: Investec cuts target price from 250p to 215p retaining a buy recommendation.UBM: Numis reduces target price from 710p to 670p keeping a hold recommendation.Volution Group: Canaccord Genuity starts with a target price of 175p and a buy recommendation.Zoopla Property: UBS initiates with a target price of 300p and a buy recommendation.