Special Report

America's Biggest Companies That Didn't Exist 10 Years Ago

Rome was not built in a day — and neither are multi-billion dollar corporations. The Fortune 500 list of the largest U.S. public companies by revenue is dominated by decades old and even more than a century old companies. 

Still, there are a handful of exceptions. Every year, new startups are formed and conglomerates are restructured — and in some cases, these companies soon report revenues high enough to rank among the largest U.S. companies. 24/7 Wall St. reviewed a range of sources, including the Fortune 500, to identify America’s biggest companies that did not exist 10 years ago. Companies are listed by revenue in ascending order. 

While there have been dozens of notable startups in the last decade, every company that was large enough to rank on this list was formed after splitting off from a larger company. In these cases, the billions of dollars in annual revenue are largely attributable to the customer base and infrastructure established when the company was a part of a larger conglomerate. 

It is important to note that while this list includes companies that spun off from larger ones, we did not consider companies formed after a merger. Here is a look at 20 corporate mega-mergers of 2019

Each of the companies on this list is headquartered in the United States, and many have operations across the country and around the world. Here is a list of the largest company by revenue in each state

Click here to see America’s biggest companies that didn’t exist 10 years ago