LONDON (ShareCast) - AMEC: Nomura ups target price from 1230p to 1280p and retains a buy recommendation.

Amerisur Resources: Investec shifts target price from 73p to 75p and keeps a buy recommendation.

AVEVA: Investec increases target price from 2500p to 2900p upgrading from hold to buy.

BHP Billiton: JP Morgan raises target price from 2150p to 2250p leaving its neutral rating unchanged.

Blinkx: Jefferies downgrades from buy to hold with a target price of 190p.

CSR: JP Morgan raises target price from 650p to 750p and retains an overweight rating.

Greenko Group: Investec initiates with a target price of 275p and a buy recommendation.

Marston's: WH Ireland upgrades to buy.

Mears Group: Investec ups target price from 440p to 495p, but downgrades from buy to add.

Moneysupermarket: Westhouse Securities moves target price from 209p to 220p and reiterates an add rating.

Moss Bros: WH Ireland ups target price from 85p to 110p and maintains its buy recommendation.

Nichols: Investec raises target price from 890p to 1055p, while downgrading to sell.

Optimal Payment: Berenberg increases target price from 452p to 520p and keeps a buy recommendation.

Royal Bank of Scotland: RBS Capital cuts target price from 375p to 310p downgrading to underperform.

Royal Mail: JP Morgan initiates with a target price of 700p and an overweight rating.

Smith & Nephew: Jefferies raises target price from 900p to 1000p and keeps a buy recommendation.

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