Ranked: The Biggest U.S. Companies by Revenue (2024–2026)

Key Takeaways

• For the first time in more than a decade, Walmart is no longer America's biggest company by revenue.
• Amazon has claimed the top spot after generating $717 billion in revenue in fiscal 2025. While online stores remained its largest business segment, the company’s fastest growth came from advertising services and Amazon Web Services (AWS), its cloud computing and AI infrastructure division.
• The biggest mover was drug supplier McKesson, which jumped four spots over the past year amid rising demand for specialty drugs and GLP-1 weight loss drugs.