Jeff Bezos
Amazon's stock is declining on Tuesday following reports that company founder Jeff Bezos filed to sell more than $4 billion worth of shares. Getty Images

Amazon's stock is declining on Tuesday following reports that company founder Jeff Bezos filed to sell more than $4 billion worth of shares.

CNBC noted that the sale took place on Monday through Morgan Stanley. The company reached a historical $3 billion market capitalization for the first time on that day after investors cheered a blockbuster second-quarter earnings report. Shares have climbed more than 20% so far this year.

The rally extended gains that began after Amazon reported earnings last week that exceeded Wall Street expectations across key financial metrics, reinforcing investor confidence that the company is one of the biggest beneficiaries of the global AI spending boom.

The surge placed Amazon among an elite group of companies valued above $3 trillion, underscoring how rapidly investor enthusiasm has shifted toward technology firms building the infrastructure needed to power the next generation of artificial intelligence.

Amazon reported adjusted earnings of $1.97 per share for the second quarter, comfortably beating analysts' expectations of $1.82 per share. Revenue reached $200.61 billion, also topping Wall Street forecasts of $196.47 billion.

While Amazon's retail business remains its largest operation by revenue, it was the continued strength of Amazon Web Services (AWS) that captured investors' attention. AWS generated $42.2 billion in revenue during the quarter, significantly ahead of analysts' expectations of $40.54 billion. The results reflected accelerating demand from businesses investing heavily in AI applications, data processing and cloud infrastructure.

Cloud computing has become one of the most important battlegrounds in the technology industry as companies race to develop and deploy increasingly sophisticated AI models that require enormous computing power.

Amazon is not alone in benefiting from that trend. Last week's earnings reports from its largest competitors also showcased explosive cloud growth. Microsoft said Azure revenue jumped 43% during its latest fiscal quarter, while Google reported 82% growth in its cloud business, highlighting the extraordinary pace of enterprise investment in AI infrastructure.

Amazon executives indicated that demand remains far stronger than the company can currently supply. During the earnings call, CEO Andy Jassy announced that Amazon is raising its capital expenditure forecast for the year to $220 billion, an increase from the $200 billion projection the company provided in February.

Much of that spending will go toward expanding data centers, networking equipment and AI computing capacity as the company scrambles to keep pace with customer demand. Jassy said rising memory prices tied to the AI buildout also contributed to the higher investment forecast.