Wednesday broker round-up

(ShareCast News) - Polypipe: Berenberg maintains buy with a 360p target.Vodafone: Jefferies reiterates buy with a 260p target.Standard Chartered: HSBC downgrades to hold with a 650p target.Prudential: Goldman Sachs keeps at buy with a target price of 1750p.WPP: Berenberg reiterates hold with a target price of 1600p.Savills: Citigroup upgrades to buy with a 815p target.Antofagasta: JP Morgan reiterates neutral with a target of 390p.Mears Group: Jefferies reiterates buy with a 460p target.BHP Billiton: JP Morgan stays at underweight with a 1000p target.Standard Life: Goldman Sachs reiterates neutral, 365p target.Cairn Energy: JP Morgan stays at overweight with a 235p target.