
Amazon, Facebook top Exxon in market value; tech takes Top Five
cxenseparse_start A sign at Facebook headquarters in Menlo Park, Calif.(Photo: Ben Margot, AP) Amazon and Facebook continued to rise up the world’s most valuable companies list on Friday, passing Exxon Mobil in market cap in morning trading. At the beginning of trading the retail giant and social networking behemoth quickly jumped ahead of Exxon, which was…