For nearly four decades, one retailer has reigned supreme in American commerce: Walmart. The Arkansas-based giant, built on Sam Walton's promise of "everyday low prices," has been the nation's largest company by revenue since overtaking ExxonMobil in 2001. No challenger has come close—until now.
Analysts project that when Amazon reports its full-year 2025 results, the e-commerce behemoth will post approximately $691.3 billion in revenue, surpassing Walmart's projected $681 billion for its fiscal year ending January 2026. If confirmed, it would mark the first time in history that Amazon has claimed the retail crown—and a symbolic milestone in the ongoing transformation of how Americans buy virtually everything.
The Long Road to the Top
Amazon's journey from Jeff Bezos's Seattle garage to the summit of American retail spans three decades of relentless expansion, reinvestment, and disruption. The company that started selling books online in 1994 now operates in virtually every retail category, from groceries to fashion to electronics to pharmaceuticals.
But raw size tells only part of the story. Amazon's revenue composition differs fundamentally from Walmart's traditional retail model:
- Amazon Web Services (AWS): The cloud computing division generates roughly $100 billion annually, with profit margins vastly higher than retail
- Third-party marketplace: Approximately 60% of Amazon's retail sales come from third-party sellers, with Amazon taking a cut of each transaction
- Advertising: Amazon's ad business has grown to nearly $50 billion, rivaling traditional media companies
- Prime membership: More than 200 million global subscribers pay annual fees for shipping and streaming benefits
This diversified model means Amazon isn't simply a bigger version of Walmart—it's a fundamentally different kind of company.
Walmart's Response
Walmart hasn't stood still as Amazon advanced. The Bentonville giant has invested heavily in e-commerce, with global online sales growing 27% last quarter. Its acquisition of Jet.com in 2016, though ultimately wound down, signaled serious intent to compete digitally.
More recently, Walmart has positioned itself as the omnichannel alternative to Amazon's pure-play e-commerce model:
- Store-based fulfillment: Walmart's 4,700+ US stores serve as mini-distribution centers, enabling same-day delivery in many markets
- Walmart+: The membership program, launched to compete with Prime, now boasts millions of subscribers
- Grocery dominance: Walmart remains the nation's largest grocer, a category where Amazon has struggled to gain traction despite the Whole Foods acquisition
Yet despite these efforts, Walmart's revenue growth has lagged Amazon's for years. The gap has steadily narrowed, and the crossover appears imminent.
"This is a symbolic moment, but it reflects real structural changes in American retail. The shift from physical stores to online shopping has accelerated faster than most predicted."
— Retail industry analyst
The Stock Market Divergence
Interestingly, stock market performance tells a different story than revenue rankings. Year-to-date through November 2025, Walmart shares gained 18.6% while Amazon declined 1%.
This divergence reflects differing investor priorities. Walmart's stock benefits from its status as a defensive play in uncertain economic times—people need groceries regardless of the economy. Amazon, meanwhile, faces scrutiny over its massive capital expenditures, particularly the tens of billions being poured into AI infrastructure.
Walmart also trades at a premium price-to-earnings multiple of roughly 39x expected fiscal 2026 earnings, reflecting investor confidence in its steady growth trajectory. Amazon's valuation incorporates both higher growth expectations and greater uncertainty about future profitability.
What It Means for Consumers
The Amazon-Walmart rivalry has been broadly beneficial for American consumers. Competition between the giants has driven prices lower, delivery times faster, and selection broader.
Consider the transformation in delivery expectations. Two-day shipping, pioneered by Amazon Prime in 2005, was once considered revolutionary. Today, same-day and even two-hour delivery are available in many markets. Walmart's store network enables it to match or beat Amazon's delivery times in many locations.
This competition has also accelerated innovation in areas like:
- Voice commerce via Alexa and other assistants
- Automated checkout and cashier-less stores
- Subscription models for household essentials
- Integrated financial services and buy-now-pay-later options
The Changing Retail Landscape
Amazon's ascent to the top reflects broader shifts in American retail that extend far beyond the Bezos-Walton rivalry.
The pandemic accelerated e-commerce adoption by years, creating new shopping habits that have proven sticky. Categories that once seemed resistant to online purchasing—groceries, furniture, even automobiles—have seen dramatic digital penetration.
Meanwhile, traditional retailers continue to struggle. Department stores have largely vanished from malls. Specialty chains face constant pressure. Even category killers like Best Buy and Home Depot must constantly reinvent themselves to survive.
What's Next
Amazon's revenue lead, once established, is likely to grow. The company's diversified model—combining retail, cloud computing, advertising, and subscription services—generates cash flows that can be reinvested in further expansion.
Walmart's response will likely focus on its distinctive strengths: physical store presence, grocery expertise, and trusted brand recognition among middle-American consumers who may view Amazon with skepticism.
The rivalry between these titans will continue to shape American commerce for years to come. But when the 2025 numbers are finalized, one fact will be clear: for the first time in history, the world's largest online retailer will also be America's largest retailer, period.
Sam Walton's empire hasn't fallen—but it has been surpassed by a company that simply didn't exist when Walmart was already the nation's dominant force. In the story of American capitalism, few transitions have been as complete or as consequential.
