Amazon's market capitalization crossed the $3 trillion threshold for the first time on Monday, as shares climbed nearly 5% in a rally fueled by a stronger-than-expected earnings report. The surge reflects growing investor confidence that the company's massive artificial intelligence investments are translating into tangible demand through its cloud computing arm.

The stock's advance extended a rebound that began after last week's quarterly results, lifting the e-commerce and cloud giant past a milestone that only a handful of companies have reached. The move marks a sharp reversal from the prior three months, during which Amazon shares had fallen about 18% from their May peak as concerns mounted over Big Tech's escalating AI capital expenditures.

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AWS growth shifts the narrative

Amazon Web Services reported revenue of $42.2 billion for the quarter, a 37% year-over-year increase—its fastest growth in more than four years and well above the 28% pace seen in the previous quarter. Analysts had expected roughly 31% growth, making the beat particularly notable.

While AWS accounts for only about 21% of Amazon's total revenue, it contributes approximately 61% of the group's operating profit, underscoring its critical role in the company's earnings power. CEO Andy Jassy highlighted the scale of the business, noting that AWS is now a $169 billion annualized revenue run rate, which would rank it 24th on the Fortune 500 if it were a standalone company.

Jassy also pointed to the strength of Amazon's AI and chip businesses, each of which has surpassed $25 billion in annualized run rate. These figures helped ease worries that the company's aggressive spending on AI infrastructure would continue to pressure profitability.

Analysts see AI investments bearing fruit

The results have prompted a wave of optimism among Wall Street analysts. JPMorgan noted that the strength in core AWS, which has a high correlation with AI revenue, is encouraging and expects this relationship to strengthen as more AI workloads move into full-scale production.

Dan Morgan, portfolio manager at Synovus Trust, said concerns about AWS losing market share have largely dissipated. "There were concerns about market share losses on AWS, but that's been put to bed now," Morgan said. "It just gives more evidence that AWS's lead is still intact. The AI tide is rising all boats here."

Among the so-called Magnificent Seven, Amazon and Microsoft are the only companies whose heavy AI spending has been broadly welcomed by investors after recent earnings. In contrast, Tesla, Alphabet, and Meta Platforms saw their shares decline as elevated AI investment weighed on free cash flow.

Valuation still below historical norms

Despite the recent surge, Amazon's stock remains relatively inexpensive compared to its own history. Trading at roughly 25 times expected earnings over the next 12 months, the shares are about 44% cheaper than their average valuation over the past decade.

The company continues to invest heavily in AI infrastructure, announcing plans to invest up to $50 billion in OpenAI earlier this year, following a separate investment in Anthropic. These moves are part of a broader competitive push to build AI platforms and cloud infrastructure.

Wall Street remains broadly optimistic about Amazon's long-term prospects, with the average analyst price target implying about 14% upside from current levels, according to Bloomberg data.

Joining the $3 trillion club

Amazon's latest milestone underscores the speed at which it has added value. It took just over two years for the company to increase its market capitalization by another $1 trillion after first reaching the $2 trillion mark in June 2024.

Amazon now joins Apple, Microsoft, Alphabet, and Nvidia in the exclusive group of companies with valuations exceeding $3 trillion. Nvidia remains the world's most valuable listed company, with a market cap approaching $5 trillion.

The rally has also had a broader impact on the market, with the Dow adding 200 points as Amazon's cloud strength fueled an AI-driven advance. The positive sentiment extended to other tech names, including Nvidia, which climbed 2.6% on the back of Amazon's increased AI spending.

For Amazon, the milestone signals that investors are increasingly convinced that the billions poured into AI infrastructure are beginning to generate real returns. With AWS continuing to strengthen its position as the company's primary profit engine, and demand for AI-powered cloud services accelerating, the company appears well-positioned to sustain its growth trajectory.

This article is for informational purposes only and does not constitute financial advice.