LOGIN SUBSCRIBE | FastCo Works advertisement BYÂ Kristin Toussaint Listen to this ArticleMore info 0:00 / 0:00 Microsoft, Nvidia, Apple, Amazon, and Alphabet are the five largest corporations by market cap, with the value of their combined shares totaling more than $16 trillion. These firms each pull in multiple billions of dollars in profit annually, and so pay tens of billions of dollars in annual taxes, too. But like other corporate giants in the S&P 500, the companies are also spending massive amounts o ...