most valuable companies

Exxon Passes Apple as Most Valuable Company

Exxon has once again surpassed Apple as the world's most valuable company after the iPhone and iPad maker saw its stock price falter. Apple's stock has been on the decline since the company's quarterly earnings report Wednesday suggested that its fast growth phase, rare for a company of its size, may be coming to an end.

The New Top 10 Giants of American Industry

On Wednesday, in a shift that symbolizes a sea change in American business, Apple's market capitalization surpassed that of ExxonMobil, making the tech firm the world's most valuable company. Here's why it happened, and what the underlying changes mean for investors.