Tuesday broker round-up UPDATE

African Minerals: Canaccord Genuity cuts target price from 295p to 230p and maintains a buy recommendation.AG Barr: Investec ups target price from 620p to 645p retaining an add rating.ARM Holdings: Numis increases target price from 880p to 920p keeping a hold recommendation.AVEVA Group: Investec places its target price (prev.: 2900p) under review, while leaving its buy recommendation unchanged.Greencore: Numis moves target price from 309p to 320p and stays with its add rating.Gulf Marine: Canaccord Genuity shifts target price from 175p to 180p and stays with its buy recommendation.OPG Power Ventures: Investec ups target price from 120p to 140p maintaining a buy recommendation.Petroceltic International: Liberum Capital lowers target price from 189p to 185p and reiterates a hold recommendation.Punch Taverns: Numis downgrades from hold to sell with a target price of 10p.SAB Miller: UBS raises target price from 3300p to 3500p and maintains its neutral rating. Investec ups target price from 3200p to 3250p, while downgrading from hold to sell.Smiths Group: JP Morgan cuts target price from 1350p to 1300p and retains a neutral rating. Investec reduces target price from 1500p to 1385p and downgrades from buy to hold.