ExxonMobil is the largest U.S. oil company. In 2013, it was the world's largest company. It's involved in crude oil and ...

Amazon.com Inc. has officially dethroned Walmart Inc. as the biggest global company by revenue, a milestone attesting to the massive scale the e-commerce and cloud-computing giant has achieved since ...

Over the past year, Alphabet Inc. has gone from an artificial intelligence afterthought to the one firm in the market with ...

The largest tech companies by market cap, ranked. Nvidia, Apple, and Microsoft lead -- see who rounds out the list.