Microsoft is No. 1: Tech giant overtakes Apple for title of most-valuable U.S. company

December 02, 2018

Microsoft ended the week with the title of the most-valuable company in the U.S., pulling ahead of Apple Friday afternoon at the close of the stock market after days of volleying back and forth. Microsoft’s stock rose slightly Friday, while Apple’s declined about 0.5 percent. This pushed Microsoft to a market capitalization of $851.2 billion vs. $847.4 billion for Apple, per Yahoo Finance.