5 Most Valuable Companies In History

2. Mississippi Company

Peak Market Capitalization: $6 trillion

Mississippi Company was a company that developed the U.S. french territories around the Mississippi River valley. It also had a monopoly on the African slave trade and French tobacco trade in the valley. Mississippi Company also experienced a speculative bubble that accounted for much of its peak value before the eventual bubble burst.

With its peak market capitalization of as much as $6 trillion in today’s terms, Mississippi Company ranks #2 on our list of 15 Most Valuable Companies In History.