Tuesday broker round-up

(Sharecast News) - Polymetal International: JP Morgan upgrades to neutral with a target price of 880p.WH Smith: RBC Capital Markets reiterates outperform with a target price of 2,400p.Tritax Big Box: RBC Capital Markets initiates at outperform with a target price of 190p.Segro: RBC Capital Markets initiates sector perform with a target price of 625p.AA: Liberum reiterates buy with a target price of 130p.Plus500: Liberum reiterates buy with a target price of 1,760p.Stagecoach: Liberum reiterates buy with a target price of 180p.Domino's Pizza Group: Peel Hunt reiterates buy with a target price of 325p.Rio Tinto: Goldman Sachs upgrades to buy with a target price of 5,000p.BHP Billiton: Goldman Sachs downgrades to neutral with a target price of 1,800p.Hammerson: RBC Capital Markets initiates at sector perform with a target price of 370p.British Land: RBC Capital Markets initiates at sector perform with a target price of 550p.Acacia Mining: Numis downgrades to hold with a target price of 200p.Greggs: UBS downgrades to neutral with a target price of 1,600p.Ashmore: UBS downgrades to neutral with a target price of 425p.TUI: UBS reiterates sell with a target price of 1,090p.Just Eat: UBS reiterates buy with a target price of 870p.Spire Healthcare: Credit Suisse downgrades to underperform with a target price of 85p.BT Group: Credit Suisse reiterates neutral with a target price of 270p.Reckitt Benckiser Group: Credit Suisse reiterates underperform with a target price of 5,800p.Global Ports Holding: Berenberg reiterates buy with a target price of 475p.Midwich Group: Berenberg reiterates buy with a target price of 720p. Dominos Midwich Group Rio Tinto Wh Smith British Land Greggs Plus500 Segro Hammerson Ashmore Group Spire Healthcare Tritax Big Box BT