Brazil's Oi shares up on report of Telefonica, Slim, Telecom Italia talks . Shares in Oi SA rose more than 4% on Monday, after Spanish newspaper Expansion reported that Telefonica SA planned a deal with Telecom Italia SpA and America Movil SA to buy the Brazilian telecoms firm. (Reporting by Alberto Alerigi Jr. and Gabriel Stargardter; Editing by Edmund Blair)