Walmart Inc. (WMT) just achieved something most retailers only dream about: a $1 trillion market capitalization. That's right, the company founded by Sam Walton in 1962 with a single store now sits among an elite group dominated by tech giants, proving that old-school retail can absolutely compete in the modern economy.

The retailer hit this milestone on Tuesday, capping off a remarkable rally where its stock price more than doubled in just two years. That performance beat the blue-chip S&P 500 index, and it's a testament to how thoroughly Walmart has transformed itself from a brick-and-mortar dinosaur into a digital powerhouse.

How Walmart Built an E-Commerce Empire

Here's the thing about Walmart's trillion-dollar journey: it required tens of billions in investments to build an e-commerce platform that could genuinely rival Amazon.com Inc. (AMZN). The company now operates nearly 11,000 stores globally, according to the Financial Times, but it's the digital infrastructure behind those stores that's really impressed Wall Street.

During investor meetings in Bentonville in 2025, Walmart demonstrated stronger sales, growing customer demand, and something that really caught analysts' attention: early leadership in artificial intelligence. This isn't just about slapping "AI" onto a press release. Walmart is actually implementing this technology in ways that matter.

Meet Sparky, Walmart's AI That Actually Does Things

Bank of America Securities analyst Robert Ohmes came away from those investor meetings particularly bullish on Walmart's long-term prospects. He highlighted robust revenue and profit trends driven by scale and AI leadership, specifically pointing to Walmart's AI agent, Sparky.

What makes Sparky interesting is that it's evolved beyond just answering customer questions. It now takes action, positioning Walmart at the forefront of AI-driven commerce. Combined with expanded omnichannel capabilities and increased private-label adoption, the company signaled serious confidence in its long-term growth trajectory.

Consumer trends back this up. Walmart is seeing steady growth in new customers, pharmacy expansion, and private-label adoption, with grocery penetration hovering in the mid-20% range. The integration with Walmart's Spark driver network could potentially drive faster sales and better return on investment compared to the core business.

Global Growth and the Race Against Amazon

Internationally, Walmart sees major opportunities in Mexico, Canada, India, and China. The company aims to double e-commerce penetration from under 30%, with Sam's Club units generating $300 to $400 million annually.

Analysts expect Walmart to report fourth-quarter revenue of $190.32 billion and earnings per share of 72 cents on February 19. Meanwhile, they expect Amazon to post fourth-quarter revenue of $211.32 billion and EPS of $1.97 on February 5.

Sure, Walmart's market value still trails Amazon's $2.6 trillion valuation, but the retailer has benefited enormously from investor enthusiasm around AI. Walmart has formed strategic partnerships with OpenAI and Alphabet Inc.'s (GOOGL) Google to integrate its shopping services into their search chatbots, which is a pretty savvy move.

Walmart now joins nine other U.S. public companies with market caps above $1 trillion, with NVIDIA Corp (NVDA) leading the pack at $4.5 trillion.

New Leadership and Nasdaq Dreams

The timing is notable: Walmart reached the $1 trillion milestone during CEO John Furner's first week in charge, following Doug McMillon's retirement over the weekend. Talk about starting a new job with momentum.

Reflecting its digital transformation, Walmart recently switched its stock listing to the Nasdaq exchange and joined the Nasdaq-100 index. It's a symbolic move that signals how the company sees itself: less old-school retailer, more tech-forward innovator.

Not everything is smooth sailing, though. As a leading U.S. goods importer, Walmart has faced challenges from the Trump administration's tariffs. According to Jefferies, Walmart and its suppliers have absorbed two-thirds of the tariff costs, passing only a third onto consumers. That's still resulted in a 7% to 7.5% price increase for affected items.

WMT Price Action: Walmart shares were up 3.09% at $127.89 at the time of publication on Tuesday, according to market data.