Is Amazon Stock Paying You Enough For The Swings?

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If you own or plan to buy Amazon.com (AMZN) stock, the rest of your money is probably already invested in the market through an index fund. At a valuation of about $2.8 trillion, every swing in Amazon stock adds to or offsets the swings the rest of your money already takes. Have you been paid enough for riding them?

Amazon Paid Less Per Swing Than The S&P 500

Over the roughly five years since October 29, 2021, Amazon stock returned 8.9% a year, lagging the 11.4% return of the S&P 500. During that period, the stock recorded an annual volatility of 36.7%, a measure of how widely the price swings in a year, compared with 17.1% for the index.

Dividing each annual return by its volatility shows how much return each unit of swing earned: 0.243 for Amazon, against 0.667 for the S&P 500. For those five years, an Amazon holder rode much wider swings and was paid less for each one than an index holder.

How Far Does Amazon Stock Move On Market Days?

Over the past year, Amazon moved further than the market in both directions on average. In the year to November 6, 2026, a $10,000 position in Amazon stock gained $97.40 on the average day the S&P 500 rose, while the same amount in the index gained about $64.40. On the average day the index fell, the Amazon holding lost $99.50, against about $63.20 in the index.

Measured as a single figure, Amazon stock moved 1.37% for each 1% move in the S&P 500 over that year. Its volatility over the same year was 34.0%, against 13.6% for the index. The pattern did not hold every day. On November 5, 2026, the index’s weakest day of the year, the S&P 500 fell 4.4% while Amazon fell 2.2%. Across the year as a whole, however, owning Amazon made the market’s moves bigger for you.

Amazon Is Spending Heavily To Build AI Computing Capacity

In fiscal Q3 2026 alone, Amazon spent $75.9 billion of cash on capital projects, mostly for AWS, its cloud business, and for AI. Management expects cash capital spending of about $220 billion for all of 2026. On the October 29, 2026 call, management said they expect to spend meaningfully more in 2027. Free cash flow, the cash left after capital spending, was negative $46.9 billion over the twelve months to September 30, 2026, against a positive $10.6 billion a year earlier.

Management believes AWS revenue can grow more than 40% in each of 2027 and 2028, but that is a forecast, not a result. The business paying for this bet is profitable: management said Amazon’s operating margin of 13.9% in fiscal Q3 2026 was its highest ever. Still, while a bet this large is being paid for, swings like the past year’s look likely to continue.

If the past year’s pattern holds, Amazon will add to your gains on the market’s next up day and to your losses on its next down day. If you already own other companies spending heavily on AI data centers and cloud computing, Amazon adds to that same bet. For the swings to pay better than they have, that spending has to turn into cash. Free cash flow is the measure to watch when Amazon is expected to report in February 2027.

Does This Mean You Should Act On AMZN?

Our purpose is to inform you with unique data so you make the right investment decisions. That said, betting on a single stock is always risky, no matter which direction you choose.

There is a smarter approach. Since its inception, the Trefis High Quality (HQ) Portfolio has returned 105%, beating the benchmark that combines the three major indices – the S&P 500, S&P Mid-cap, and Russell 2000. And it did so without taking the concentrated risk that comes with do-it-yourself stock picking. If that is how you want to invest, the HQ Portfolio is the place to start.

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