Why Amazon’s Spending Spree Makes It a Must-Buy Now

narvikk / Getty Images
narvikk / Getty Images
  • Amazon (AMZN) free cash flow dropped 69% to $14.8B as capital spending surged to $89.9B year-to-date. Amazon stock rose only 6% in 2025.

  • Amazon AWS grew 20% to $33B in Q3 revenue with 34.6% operating margins. Advertising services expanded 24% to $17.7B.

  • Amazon projected $125B capex for 2025 focused on AI infrastructure and data centers. Management indicated spending will increase further in 2026.

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For investors in Amazon (NASDAQ:AMZN), 2025 proved to be a lackluster year. The stock only rose about 5%, trailing the S&P 500‘s 16% advance and also lagging most of its Magnificent 7 peers, including Apple (NASDAQ:AAPL), which gained just 8%.

This underperformance stemmed from concerns over Amazon’s heavy capital spending and slowing cash flow generation. Yet, beyond a simple reversal of fortunes, the strategic investments position it for strong gains in 2026 as these efforts begin to yield results.

Amazon’s free cash flow has faced ongoing declines amid aggressive investments. In the third quarter, trailing 12-month free cash flow dropped to $14.8 billion, down 69% from $47.7 billion a year earlier. This followed a slide from $18.2 billion in the second quarter, driven by a $50.9 billion year-over-year increase in property and equipment purchases. Cash capital expenditures reached $34.2 billion in Q3 alone, with $89.9 billion spent year-to-date.

Amazon’s capex spending ebbs and flows over time, marked by periods when its pouring money into new investments followed by phases of contraction where it waits for (and often sees) a payoff. During the heavy spending periods — such as the early years when it was building out AWS — spending ramped up to drive innovation and market leadership. Investors have seen signs for the past year that indicate Amazon has entered  a new cycle — it could be its biggest yet — as AI becomes central to its strategy.

Although this has weighed heavily on Amazon’s performance, the trend may continue into the fourth quarter when it reports results later this month, as full-year cash capex is projected at $125 billion for 2025, a significant jump from prior levels. Management has indicated capex will rise even more in 2026 to support its expanding infrastructure needs.

Despite the cash flow squeeze, this spending is not a red flag but a deliberate strategy to fuel future growth. The bulk of capex — around $125 billion in 2025 — targets Amazon Web Services expansion, data centers, and AI infrastructure. This includes billions allocated to custom silicon like Trainium 2 chips, which have already generated billions of dollars in revenue and grown 150% sequentially in Q3. Trainium 3, which was released in December, promises 4.4 times higher compute performance and 40% lower energy use.

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