Friday broker round-up

(Sharecast News) - Next: Berenberg upgrades to hold with a target price of 4,100p.DS Smith: Jefferies reiterates hold with a target price of 330p.Serco: Liberum reiterates hold with a target price of 105p.Glencore: UBS reiterates neutral with a target price of 300p.Keller: Numis upgrades to buy with a target price of 800p.Whitbread: Barclays upgrades to overweight with a target price of 5,200p.Atalaya Mining: Canaccord reiterates buy with a target price of 320p. Keller Serco Whitbread Next Glencore Atalaya Mining