Economy of the United States Corporation, Apple Inc., Verizon, JPMorgan Chase, and Cardinal Health. In 2013, eight of the world's ten largest companies by market capitalization were American: Apple Inc., ExxonMobil, Berkshire Hathaway, Walmart, General Electric, Microsoft, IBM, and Chevron Corporation. According to Fortune Global 500 2011, the ten largest U.S. employers were Walmart, U.S. Postal Service, IBM, UPS, McDonald's, Target Corporation, Kroger, The Home Depot, General Electric, and Sears Holdings. Apple, Google, IBM, McDonald's, and Microsoft are the world's five most valuable brands in an index published by Millward Brown. A 2012 Deloitte report published in "STORES" magazine indicated that of the world's top
Canadian petroleum companies Ltd, Pacific Rubiales Energy in 2015, Penn West Petroleum in 2013, Arc Resources in 2012. Revenue and profit are from the 12-month period ended March 2015, assets and market capitalization are from March (2014 for Canadian Oil Sands Ltd, Pacific Rubiales Energy) Sources Oil Services 2015 Oil Operations 2015 Oil Services 2014 and Oil Operations 2014 James Miller Williams, John T Ferguson, Richard L. George, Randy Eresman, David P.O'Brien, John C.S. Lau, Li Ka-shing, David D. Daniel, John Manzoni, Philip D. Dolan, Marvin Romanow, John Backer Canadian petroleum companies Although there are numerous oil companies operating in Canada, the majority