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.

Heavy Spending Pressures Cash Flow

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.

Why Amazon’s Cash Burn Signals Strength

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.

Historically, similar investment cycles have paid off handsomely. Past capex surges built AWS into a profit powerhouse, now with a $132 billion annualized run rate. Analysts project the AI cloud market to hit $647 billion by 2030. AWS holds a 32% share of the global cloud infrastructure services market where most of the AI workloads occur, though Microsoft (NASDAQ:MSFT) is often seen as the leader in the AI cloud because of its partnership with OpenAI. Still, Amazon benefits from extensive enterprise ties and integrations like Bedrock for AI models. As AI demand shifts from training to inference, Amazon’s vertical control over hardware could protect margins and drive revenue.

High-Margin Businesses Drive Momentum

Amazon’s revenue mix underscores its potential. In Q3, total revenue hit $180.2 billion, up 12% year-over-year on a constant currency basis. AWS led with $33 billion in sales, up 20% — its fastest growth in 11 quarters — and $11.4 billion in operating income, yielding a 34.6% margin. Advertising services grew 24% to $17.7 billion quarterly, on pace for substantial annual expansion with margins over 50%.

Subscription services, including Prime, added $12.6 billion, while third-party seller services reached $42.5 billion. Amazon’s high-margin segments now comprise nearly 60% of revenue, growing faster than the low-margin retail side. Meanwhile, retail efficiency is improving through robotics deployment in fulfillment centers, boosting profitability in logistics.

Amazon trades at about 29 times 2026 estimated earnings and 19 times trailing operating cash flow of $130.7 billion. This appears reasonable for a company expecting double-digit revenue growth, backed by $200 billion in AWS performance obligations over 3.8 years.

Key Takeaway

With tailwinds like AWS reacceleration, advertising expansion, and its AI infrastructure maturing, Amazon is set to reap rewards from its capex outlays. The investments lay groundwork for sustained dominance in cloud and e-commerce, turning its current pressures into 2026 gains.