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Market capitalization of the largest U.S. internet companies 2021

As of February 2021, Amazon's market capitalization was 1.557 trillion U.S. dollars, making the company the most valuable U.S.-based internet company by market capitalization. Second-ranked Alphabet had a market cap of nearly 1.4 trillion U.S. dollars.

Internet companies generate their revenue through various means. Google, for instance, makes use of its advertisement services such as Google AdWords – which takes advantage of Google searches and appear as small advertisements next to search results – and Google AdSense which generates advertisements based on a user’s search history and location, among others. Advertisements based on AdSense appear all across Google-owned sites including YouTube and Google Finance. The online company also profits from the development of Android OS, licensing and mobile apps as well as the recent development of hardware such as the Nexus mobile device series and Google Glass. In 2020, Google’s total revenue amounted to 181.69 billion US dollars.

Social network Facebook is ranked third. It is the leading social network worldwide and has successfully managed to take advantage of the increasingly mobile online environment. In the third quarter of 2019, Facebook's mobile advertising revenue came to 16.34 billion US dollars., the largest U.S. internet company based on its market capitalization, generates in profit from its position as the world’s largest online retailer; in 2020, the company’s net revenue came to 386 billion US dollars.

Market capitalization of the largest U.S. internet companies as of February 2021

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Release date

February 2021


United States

Survey time period

Febuary 24, 2021

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Statistics on "Google, Amazon, Facebook, Apple, and Microsoft (GAFAM)"

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