Amazon's Stock Drop: The Cash Cost of Growth

Amazon’s operating income rose 61% to $28.1 billion and AWS sales grew 39%, but trailing free cash flow fell to negative $42.4 billion.⁠¹ Earnings per share of $1.89 missed an analyst consensus of $1.96, and the shares fell 6.11% in after-hours trading, a pattern consistent with investors charging Amazon for the cash cost of its growth.⁠² Confidence: moderate, because every operating figure comes from Amazon’s own release and call, while the price reaction is a single after-hours snapshot.

Operating income rose 61% and earnings per share fell 3%

Operating margin is operating income divided by net sales. Amazon’s was $28,076 million on $201,944 million of sales, or 13.9%, which the company calls its highest ever, up from 9.7% a year earlier.⁠¹ North America contributed $8.7 billion of operating income, International $1.6 billion and AWS $17.8 billion.⁠¹

Earnings per share (EPS) is net income divided by the weighted-average diluted share count. Net income was $20,685 million over 10,929 million diluted shares, or $1.89, against $1.95 a year earlier.⁠¹ Amazon attributed the decline mainly to $9.5 billion of pre-tax gains from its Anthropic investments in the third quarter of 2025. Non-operating “other income” swung from a $10.2 billion gain to a $0.7 billion loss, and interest expense rose to $1,691 million from $538 million as the company borrowed.⁠¹

Operating income rose 61% while EPS fell 3%, and the gap is a year-earlier investment gain plus higher interest cost.⁠¹

Capital spending of $75.9 billion turned trailing free cash flow negative

Capital expenditure (capex) is spending on long-lived assets such as data centers and servers. CFO Brian Olsavsky put third-quarter cash capex at $75.9 billion, and Amazon kept its 2026 plan at about $220 billion, with CEO Andy Jassy saying 2027 spending will be meaningfully higher.⁠² The $75.9 billion equals the cash-flow statement’s $77,259 million of purchases of property and equipment less $1,381 million of proceeds from sales and incentives, which is my arithmetic from the release.⁠¹

Free cash flow (FCF) is operating cash flow minus purchases of property and equipment net of those proceeds, as Amazon defines it. Measured In the third quarter alone that was $42,422 million minus $75,878 million, or negative $33,456 million. Trailing twelve months (TTM) means the four most recent quarters added together, so each new quarter pushes the oldest out. On that basis free cash flow was negative $42,357 million, against positive $14,788 million a year earlier and negative $7,604 million at the end of the second quarter.⁠¹

Amazon increased its borrowing substantially during the period, while infrastructure investment exceeded operating cash generation. Long-term debt stood at $173,125 million, up from $65,648 million at the end of 2025, and Amazon took in $48,102 million of long-term debt in the third quarter alone.⁠¹ The financial statements do not establish exactly how much of the borrowing was allocated to capital expenditures. Cash and marketable securities were $114.2 billion, down from $123.0 billion at year-end, by my arithmetic. Operating cash flow still rose 29% to $168.3 billion over twelve months, but net purchases of property and equipment were larger than that.⁠¹

AWS drives growth and operating profit

Cloud computing means renting servers, storage and software over the internet instead of owning them, and Amazon reports it as the AWS segment. AWS sales were $45,984 million, up 39% from $33,006 million, after 20% growth a year earlier and 37% in the second quarter.⁠¹ Operating income was $17,773 million, a 38.7% margin, down from 39.4% in the second quarter and up from 34.6% a year earlier.⁠¹ AWS produced 63% of Amazon’s operating income from 23% of its sales, by my arithmetic from the segment table.⁠¹

Revenue backlog is contracted revenue that has not yet been recognized. Reported Jassy put AWS’s at $578 billion, growing triple digits year over year.⁠² Amazon’s release carries no backlog figure and I could not open its 10-Q, so I cannot confirm how Amazon defines the term. Alphabet’s 10-Q defines its equivalent as commitments in customer contracts not yet recognized, excluding cancelable contracts, and reports $560.8 billion for Google Cloud.⁠³ Against annualized revenue, AWS’s backlog equals about 3.1 years ($578 billion over $184 billion) and Google Cloud’s about 4.6 years ($560.8 billion over $122.8 billion), which is arithmetic and not a like-for-like measure.⁠²⁠⁴

Forecast Jassy said AWS can grow more than 40% in both 2027 and 2028 and become a $1 trillion revenue business within five to ten years, which are management projections that depend on capacity not yet built.⁠²

Microsoft’s Azure reached $33.17 billion in its fiscal first quarter, up 48%, and Microsoft’s free cash flow fell 27% to $18.63 billion on $45.2 billion of capex and finance leases.⁠⁵ Google Cloud sales were $30.7 billion, up 103%, and include TPU system sales.⁠⁴ Readers who want all four spenders on the same measures can use our Big Tech AI capex scorecard, which compares spending, cash flow and earnings.

The stock fell 4.25% before the report and 6.1% after it

After-hours trading is trading after the 4:00 p.m. Eastern close of the regular session, when most earnings reports are released. It involves fewer trades, and its prices can differ from the next day’s open. Amazon’s shares fell 4.25% in the regular session on 29 October to $243.79 from $254.60, then 6.11% more after hours to $228.90, a decline of about 10.1% from the prior close.⁠² The $228.90 price is an after-hours snapshot and not the next regular-session close. The regular-session fall came before the results, so it was not a reaction to them. Alphabet’s shares fell about 13% that day after its own report, a loss our Alphabet analysis reads as pointing to cash flow more than Search, and whether the two moves were linked is not established.⁠⁶

Analyst consensus is the average of professional forecasts compiled by a data provider, and providers differ slightly. Investing.com reported a consensus EPS of $1.96 and revenue of $202.1 billion.⁠² Amazon’s $1.89 missed by 7 cents, or 3.6%, and its $201.9 billion missed by about 0.1%.⁠¹⁠²

For the fourth quarter Amazon guided net sales of $240.0 billion to $247.0 billion, growth of 12% to 16%, and operating income of $28.5 billion to $33.5 billion against $25.0 billion a year earlier.⁠¹ It expects advertising growth in the high teens after 12% in the third quarter, which it blamed on Prime Day timing, a shift that took about four points off third-quarter net sales growth.⁠¹ I could not verify a consensus figure for the fourth-quarter guide, so I make no claim that it fell short.

What was measured, by whom, and who paid for it

Amazon’s figures are unaudited company numbers, with free cash flow as a measure Amazon defines itself. Peer figures come from companies’ own releases or press coverage, and every share price is a snapshot at one time.

Where sources disagree and what the evidence leaves open

Capex figures differ by definition. Amazon’s $75.9 billion is net of $1.4 billion of proceeds, while the gross purchases line on the cash-flow statement is $77,259 million.⁠¹⁠² Consensus figures vary by provider, so the $202.1 billion revenue figure here is the one I could open. Jassy called AWS growth the sixth straight quarter of acceleration, and the release’s table shows five successive increases across the six quarters it lists, which matches his count only if the second quarter of 2025 also accelerated, something that table cannot show.⁠¹⁠²

The evidence does not establish why the shares fell after hours. Investing.com’s account says investors focused on the earnings miss and heavy spending, which is an inference and not a measurement.⁠² Nothing I read separates the effect of the EPS miss, the cash burn and the Alphabet sell-off that day. The 4.25% regular-session decline had no earnings cause at all.

After-hours prices are snapshots, and the figure here is not Friday’s close.

Whether AWS backlog converts to revenue at the pace implied by Jassy’s 40% growth projection is also open, because Amazon’s release gives no backlog schedule and I could not open its 10-Q.

Verdict: investors charged for the cash cost of growth, not weaker growth

Opinion Amazon improved on every operating line it reports, and the after-hours decline sits beside the two measures that worsened: EPS below consensus, and trailing free cash flow falling $34.8 billion in one quarter to negative $42.4 billion while long-term debt rose $107.5 billion in nine months.⁠¹

Confidence stays moderate. The financial facts are filed and checkable, while attributing a price move to any one of them is inference, and a single after-hours snapshot may not match the next regular session.

One measurement would change it: the fourth-quarter trailing free cash flow figure, read next to the share-price reaction. If free cash flow stabilizes, AWS growth holds near 39% and the shares still fall, the cash-flow reading weakens and the EPS miss or guidance carries more of the blame.⁠¹