As of last August, Apple was the most valuable company in the world, and Microsoft and IBM were sixth and seventh, respectively. By that same measure, the four

As of last August, Apple was the most valuable company in the world, and Microsoft and IBM were sixth and seventh, respectively. By that same measure, the four most valuable US companies were Apple, ExxonMobile, Microsoft and IBM, in that order. http://blogs-images.forbes.com/scottdecarlo/files/2011/08/Current_top_251.png http://blogs-images.forbes.com/scottdecarlo/files/2011/08/Cu... I think your information is out of date.