Forbes 2024 Global 2000 List - The World’s Largest Companies Ranked With the S&P 500 Index hitting record highs this year while markets in China and Hong Kong have struggled, the 22nd annual Global 2000 ranking of the world’s largest public companies is more U.S.-centric than it’s been since before the 2008 financial crisis. JPMorgan Chase, with its market capitalization of $550 billion market cap