Earnings reports have been shuffling the list of America's largest companies the past few days. Amazon has now climbed three spots from seventh place in the two
sessions since it reported second-quarter results,
passing Berkshire Hathaway and Facebook on
Friday, then pushing past Exxon Mobil Corp. Monday to become the fourth-largest U.S. company.
Exxon Mobil also fell behind Facebook into sixth place, to make it an all-technology top five. As of right now, these are the five biggest companies in America: