Apple Passes Microsoft to Become Second-Largest U.S. Company by Market Capitalization
In the less-than-three months since Apple first passed Wal-Mart to hold the third highest market capitalization among U.S. companies, Apple's stock price has continued to increase while second-place Microsoft has seen its shares drift downwar...
http://www.macrumors.com/2010/05/26/apple-passes-microsoft-to-become-second-largest-u-s-company-by-market-capitalization/