The Fortune 500, now in its 72nd year, tracks the biggest U.S. companies by revenue. Each year, companies are ranked by how much they’ve made (or lost) and by how their market caps and bottom lines rank within their cohorts. Some of the largest F500 companies have revenues that dwarf the GDPs o f most of the world’s economies. Take, for example, Nvidia, which would be considered the world’s fourth-largest economy were it a country. Nvidia is worth more than Japan. Apple exceeds India. Amazon’s market value tops Brazil’s entire annual economic output. A Fortune analysis of Fortune 500 market capitalizations (using data from the end of March) against World Bank GDP data finds that nine U.S. companies now carry market values larger than all but a handful of the world’s national economies—and a tenth is close behind. The comparison uses market capitalization—the total value of a company’s outstanding shares—set against 2024 GDP figures in current U.S. dollars from the World Bank. The two metrics measure different things: GDP reflects the annual value of goods and services a country produces, while market cap reflects what investors collectively believe a company is worth. But placed side by side, the numbers illuminate just how concentrated corporate value has become at the top of the American market. Here is where each company would rank if it were a country: United States (GDP): $28,750,956M China (GDP): $18,743,803M Germany (GDP): $4,685,593M Nvidia (market cap): $4,237,920M Japan (GDP): $4,027,598M Apple (market cap): $3,725,927M India (GDP): $3,909,892M Alphabet (market cap): $3,478,613M United Kingdom (GDP): $3,686,033M France (GDP): $3,160,443M Microsoft (market cap): $2,748,745M Italy (GDP): $2,380,825M Canada (GDP): $2,243,637M Amazon (market cap): $2,235,762M Brazil (GDP): $2,185,822M Russia (GDP): $2,173,836M South Korea (GDP): $1,875,388M Mexico (GDP): $1,856,366M Australia (GDP): $1,757,022M Spain (GDP): $1,725,672M Broadcom (market cap): $1,465,427M Meta Platforms (market cap): $1,447,235M Indonesia (GDP): $1,396,300M Tesla (market cap): $1,394,967M Türkiye (GDP): $1,359,124M Saudi Arabia (GDP): $1,239,805M Netherlands (GDP): $1,214,928M Berkshire Hathaway (market cap): $1,033,220M Switzerland (GDP): $936,564M Poland (GDP): $917,767M Walmart (market cap): $990,810M Nvidia, which has become the defining infrastructure stock of the artificial intelligence era, tops the corporate list at $4.24 trillion—a figure that would place it fourth globally, ahead of Japan and India, and just behind Germany. Apple, at $3.73 trillion, would rank sixth, between Japan and India. Alphabet, at $3.48 trillion, falls just below India and above the United Kingdom. Microsoft, at $2.75 trillion, would rank between France and Italy, while Amazon, at $2.24 trillion, sits just below Canada and above Brazil. The next tier is tighter. Broadcom ($1.47 trillion) and Meta Platforms ($1.45 trillion) would rank between Spain and Indonesia. Tesla ($1.39 trillion) narrowly trails Indonesia ($1.40 trillion)—by less than $6 billion. Berkshire Hathaway, at $1.03 trillion, lands between the Netherlands and Switzerland. Walmart, which topped the Fortune 500 revenue rankings for 13 consecutive years before Amazon claimed the title in 2026, sits just outside this group at roughly $913 billion in market cap, below Switzerland. The concentration is notable even within the list itself. The top five companies alone—Nvidia, Apple, Alphabet, Microsoft, and Amazon—have a combined market value of roughly $16.4 trillion, which could rival China’s GDP. This story was originally featured on Fortune.com ...read more read less