The ten largest U.S. companies by annual revenue on the 2026 Fortune 500, led by Amazon at $716.9 billion, just ahead of Walmart at $713.2 billion.
Amazon is the largest U.S. company by revenue, with $716.9 billion on the 2026 Fortune 500, ending Walmart's run at No. 1. Walmart is second at $713.2 billion and UnitedHealth Group third at $447.6 billion. The ranking uses total revenue as published in the 2026 Fortune 500, released in June 2026 and based mostly on 2025 fiscal-year results.
The Fortune 500 ranks U.S. companies by total revenue, and it is the most widely used yardstick for the size of America's largest businesses. The 2026 edition, published in June 2026 and based mostly on 2025 results, has a new No. 1: Amazon passed Walmart, which had led every edition since 2013. The top ten is two giant retailers, two technology companies, four health-care businesses (UnitedHealth Group, CVS Health and the drug wholesalers McKesson and Cencora), an oil major and Berkshire Hathaway. Revenue measures the money flowing through a business, not profit, so low-margin distributors such as McKesson and Cencora rank alongside far more profitable technology firms.
Amazon reported $716.9 billion in 2025 revenue and took the No. 1 spot on the 2026 Fortune 500, ending Walmart's 13-year run at the top. Its online stores, third-party seller services and Amazon Web Services together edged past Walmart by about $3.7 billion.
Walmart reported $713.2 billion in revenue for its fiscal year ended January 2026, enough for second place and its first year outside the top spot since the 2012 edition. The gap to Amazon is about half of one percent.
UnitedHealth Group reported $447.6 billion in revenue, holding third place. It combines the UnitedHealthcare insurance business with Optum's care-delivery, pharmacy-benefit and data businesses.
Apple reported $416.2 billion in revenue for its fiscal year ended September 2025, ranking fourth. iPhone sales are its largest single source of revenue.
Alphabet, the parent of Google, reported $402.8 billion in 2025 revenue, ranking fifth. Advertising across Search and YouTube is the bulk of it, with Google Cloud a growing share. Alphabet itself was formed in 2015 as Google's holding company; Google dates to 1998.
CVS Health reported $402.1 billion in 2025 revenue, up 7.8%, ranking sixth and just $0.7 billion behind Alphabet. It combines CVS Pharmacy, the Aetna insurer and the CVS Caremark pharmacy-benefit manager.
Warren Buffett's conglomerate reported $371.4 billion in 2025 revenue, almost unchanged from 2024, ranking seventh. Insurance (including GEICO), BNSF Railway, Berkshire Hathaway Energy and dozens of manufacturing and retail businesses make up the total. The founding year refers to the original textile business; Buffett took control in 1965.
McKesson reported $359.1 billion in revenue for its fiscal year ended March 2025, ranking eighth. It is one of the three big U.S. drug wholesalers, so its revenue counts the full value of the medicines it distributes.
ExxonMobil reported $332.2 billion in 2025 revenue, ranking ninth and the largest U.S. energy company on the list. Its revenue was down from $349.6 billion on the 2025 list. The current company dates from the 1999 Exxon-Mobil merger; both predecessors trace back to Standard Oil.
Cencora, formerly AmerisourceBergen, reported $321.3 billion in revenue for its fiscal year ended September 2025, rounding out the top ten. Like McKesson, it is a drug wholesaler whose revenue reflects the volume of medicines it moves. The founding year is that of the AmerisourceBergen merger; it took the Cencora name in 2023.
| # | Name | HQ | Industry | Fortune 500 rank 2026 | Founded |
|---|---|---|---|---|---|
| 1 | Amazon | Seattle, Washington | Retail and cloud computing | 1 | 1994 |
| 2 | Walmart | Bentonville, Arkansas | Retail | 2 | 1962 |
| 3 | UnitedHealth Group | Minnetonka, Minnesota | Health insurance and health services | 3 | 1977 |
| 4 | Apple | Cupertino, California | Technology | 4 | 1976 |
| 5 | Alphabet | Mountain View, California | Technology and cloud computing | 5 | 2015 |
| 6 | CVS Health | Woonsocket, Rhode Island | Pharmacy, health insurance and PBM | 6 | 1963 |
| 7 | Berkshire Hathaway | Omaha, Nebraska | Conglomerate | 7 | 1839 |
| 8 | McKesson | Irving, Texas | Pharmaceutical distribution | 8 | 1833 |
| 9 | ExxonMobil | Spring, Texas | Petroleum | 9 | 1999 |
| 10 | Cencora | Conshohocken, Pennsylvania | Pharmaceutical distribution | 10 | 2001 |
Companies are ranked by total revenue exactly as published in the 2026 Fortune 500 (released 3 June 2026). Fortune uses each company's most recent fiscal year ending on or before 31 January 2026, so most figures are calendar 2025; Walmart's fiscal year ended January 2026, Apple's and Cencora's September 2025, and McKesson's March 2025. Revenue is consolidated total revenue in U.S. dollars as Fortune reports it. The Fortune 500 covers U.S. companies that file financial statements with a government agency, so large private firms such as Cargill are not included. All ten figures come from this single edition; figures are rounded to one decimal place in billions. Rank 1 is the highest revenue, and there are no ties.
Amazon, with $716.9 billion in revenue on the 2026 Fortune 500. It overtook Walmart ($713.2 billion), which had been No. 1 on every Fortune 500 list from 2013 through 2025.
Revenue counts the full value of goods sold, and these companies distribute a large share of the prescription drugs sold in the United States. Their profit margins are thin, but the volume of medicines they move puts McKesson ($359.1 billion) and Cencora ($321.3 billion) in the top ten.
Four: UnitedHealth Group, CVS Health, McKesson and Cencora. Together they account for about $1.53 trillion of the top ten's roughly $4.48 trillion in revenue.
The Fortune 500 ranks U.S. companies only; the Fortune Global 500 ranks companies worldwide. On the 2026 Global 500, Amazon is first and Walmart second, followed by China's State Grid, with Saudi Aramco and China National Petroleum also in the global top ten.
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