Microsoft and Apple Race to $4 Trillion Market Value

Two of the biggest U.S. companies are getting even bigger.

Microsoft and Apple are within striking distance of becoming $4 trillion companies. Microsoft stock is trading at $532.74 and a move to $538.129, considering outstanding shares, will push its current $3.96 trillion market value to the $4 trillion target.

Similarly, Apple's market value can move up from $3.94 trillion if the stock closes at $269.535, which is just a short distance away from its current value of $265.93.