losers. polti group lost 6%. lana r&d r horton fell 5. chesapeake energy, the second-biggest u.s. natural gas producer, rose 6% after announcing it will replace more than half its board of directors. delta airlines had its steepest drop in three years after missing a may revenue target. australia s qantas airways plunged to an all-time low after forecasting a possible 91% drop in yearly earnings. apple is planning to oust google maps as the preloaded app on the iphone and ipad in favor of a new apple version. starbucks dipped in late trade after announcing a $100 million purchase of la boulange in an effort to freshen up food offings. banned commercials featuring candy, sugared cereal and fast food on disney-owned stations.