I Top 10 Companies by Market Cap in 2024 Company Sector Market Cap (in USD) #1 Microsoft Technology $3.1 trillion #2 Nvidia Technology $2.68 trillion #5 Amazon E-commerce $1.81 trillion #7 Meta Platforms Social Media $1.26 trillion #8 Berkshire Hathaway Diversified Investments $883.7 billion #09 Eli Lilly Pharmaceuticals $724.6 billion #10 TSMC Semiconductors $708.75 billion. Amazon.com Inc. is the world's largest