• Amazon's Q2 sales beat expectations but cautious guidance spooks investors.
  • AWS growth slows amid rising competition and economic uncertainty.
  • Heavy AI investments and tariff concerns weigh on future profitability.

A Surprise Selloff Despite Strong Sales

Amazon's shares tumbled 7.1% in after-hours trading Thursday, wiping out $178 billion in market value, despite reporting better-than-expected quarterly sales of $167.7 billion. The drop marks the company's steepest single-day decline since 2022 as investors reacted to management's subdued outlook for the coming quarters.

While the e-commerce giant posted 13% year-over-year revenue growth, concerns mounted over slowing expansion in its cloud division AWS, which grew 17.5% - notably below some competitors' performance. "The AWS deceleration caught us off guard," said one hedge fund manager who asked not to be named due to firm policy. "When you combine that with the capex numbers for AI, it creates real questions about margin trajectory."

The Guidance That Spooked Wall Street

CFO Brian Olsavsky told analysts the company faces "multiple headwinds" including potential US tariff increases on Chinese goods and intensifying cloud competition. The remarks came hours after the Trump administration proposed new 25% tariffs on $300 billion of imports, a move that could significantly impact Amazon's third-party marketplace economics.

Market participants noted the selloff reflected broader jitters about tech valuations. "Amazon became the release valve for pent-up concerns about AI investment cycles and trade policy," said a senior trader at a bulge-bracket bank. The decline contributed to a 1.2% drop in the Nasdaq Composite as other megacap tech stocks saw sympathy selling.

AI Arms Race Comes at a Cost

Company executives emphasized their commitment to AI infrastructure spending, with capital expenditures projected to rise sharply through 2025. While analysts generally applaud the long-term strategy, near-term profit compression appears inevitable. "You're seeing the market struggle to price this transition," noted a Bernstein research report published after the earnings call. "The AWS moderation makes the AI bet more binary."

Attempts to reach Amazon's investor relations team for additional comment were unsuccessful. Options markets showed heavy put buying at the $170 strike price, suggesting traders anticipate further downside. The stock's implied volatility surged to 18-month highs as the earnings reaction played out.