Amazon's AWS Grew 37%. AI Capex Ate the Cash Flow.

Amazon's second-quarter revenue increased 19.6% year over year to $200.61B from $167.70B. That was a meaningful acceleration from the 15.0% growth reported in Q1 FY2026 and from the roughly 12% pace recorded through much of FY2025. Foreign exchange contributed only $0.1B, so the acceleration was substantially operational rather than currency-driven.

AWS supplied the largest change. Segment revenue increased 36.8% to $42.23B, compared with 17.0% growth one year earlier and 28.0% in Q1 FY2026. Management described this as AWS's fastest growth in 18 quarters and said the segment had reached a $169B annualized revenue run rate. AWS's share of consolidated sales rose to 21% from 18% in the prior-year quarter.

The cloud acceleration translated into even faster profit growth. AWS operating income increased 63.6% to $16.62B, while its operating margin expanded to 39.4% from 32.9%. AWS produced approximately 60.5% of consolidated operating income during the quarter, underscoring how heavily Amazon's earnings progression now depends on cloud growth and cloud margins.

The retail businesses also improved, although less dramatically. North America sales rose 16.1% to $116.18B and operating income increased 21.4% to $9.12B. Its 7.9% operating margin was up from 7.5% a year earlier but unchanged from Q1. International sales increased 14.8% to $42.20B, while operating income rose 14.9% to $1.72B and the segment margin held at 4.1%.

Advertising remained another high-growth service line, increasing 26.2% to $19.81B. Online-store sales rose 14.6%, third-party seller services grew 15.9%, and subscription services advanced 12.5%. The quarter therefore combined faster core retail activity with even stronger growth from AWS and advertising.

Consolidated operating income increased 43.2% to $27.46B. Operating margin reached 13.7%, up from 11.4% in Q2 FY2025 and 13.1% in Q1 FY2026. This is the cleanest evidence of improved economics because it excludes the unusually large investment-related gain included below the operating line.

Reported EPS rose to $5.75 from $1.68, but that comparison is not representative of recurring earnings. Net income included $53.4B of pre-tax non-operating other income, primarily from Amazon's investments in Anthropic. The operating-income increase is therefore more informative than the 242% rise in diluted EPS.

Cash flow presents the counterweight. The supplied quarterly table records Q2 free cash flow of $45.39B versus $32.52B a year ago. Under Amazon's company-defined trailing-12-month measure, however, free cash flow deteriorated from a $18.18B inflow to a $7.60B outflow. Operating cash flow increased 33.2% to $161.40B, but net purchases of property and equipment rose to $169.01B, primarily reflecting AI investment.

The quarter strengthened the case that Amazon is participating directly in rising AI infrastructure demand rather than merely funding a speculative product cycle. Management said both its AI and chips businesses surpassed $25B annual revenue run rates and were growing at triple-digit percentages. It also cited multi-year, multi-gigawatt Trainium commitments from Anthropic and OpenAI. Those disclosures support the demand side of the AI investment case.

The economic evidence was also favorable. AWS revenue growth accelerated by nearly nine percentage points sequentially, while its margin rose 1.7 percentage points to 39.4%. Faster growth did not require an immediate sacrifice in reported segment profitability. Together, AWS and advertising are increasing the contribution from service businesses with stronger economics than first-party retail.

The unresolved issue is the return on capital required to sustain that growth. Purchases of property and equipment, net of proceeds and incentives, reached $169.01B for the trailing 12 months, up 64.1%. That spending exceeded trailing operating cash flow and caused Amazon's company-defined free cash flow to turn negative despite the sharp increase in operating income.

The balance sheet can support the build-out, but its direction changed. The supplied quarterly data show net debt of $54.78B at June 2026, compared with net cash of $17.97B at FY2025. Long-term debt increased to $128.89B from $65.65B at year-end, while cash and cash equivalents declined to $78.21B. This does not create an immediate liquidity problem, but it raises the importance of converting AI capacity into durable revenue and cash returns.

Q3 guidance remains constructive but signals slower consolidated growth. Amazon expects revenue of $197.0B to $202.0B, a midpoint of $199.5B and growth of roughly 10.5%. Management said the comparison is affected by the timing of Prime Day and that growth excluding Prime Day in both periods would be nearly four percentage points higher. Operating-income guidance of $22.5B to $26.5B implies a $24.5B midpoint, up 40.6% from Q3 FY2025 but below Q2's $27.46B.

With no prior SageNoodle coverage, this is an initiation rather than a fair-value revision. We value Amazon using a multiple of trailing-12-month operating income because reported EPS contains a large Anthropic-related gain and company-defined trailing free cash flow is temporarily negative. The supplied trailing operating income is $93.71B.

The base case applies a 30.0x enterprise-value-to-operating-income multiple, then subtracts Q2 net debt of $54.78B and divides by 10.90B diluted shares. That produces an equity value of approximately $253 per share. At the current price of $251.63, the shares are fairly valued under the stated 15% verdict thresholds.

The 30.0x assumption reflects a business growing consolidated revenue by 19.6%, with AWS growing 36.8% and trailing operating margin reaching 12.1%. It also recognizes that current operating income is not equivalent to distributable cash: AI infrastructure spending has moved company-defined trailing free cash flow into an outflow, and the durability of AWS's current margin has not yet been tested through the full investment cycle.

Our bear case applies 24.0x trailing operating income, producing approximately $201 per share after net debt. It assumes AWS growth moderates, AI capacity requires continued heavy spending and consolidated margin improvement stalls. The bull case applies 36.0x, producing approximately $304 per share, based on sustained AWS growth above 30%, AWS margins near current levels and eventual normalization of capital intensity.

Assigning probabilities of 25% to the bear case, 50% to the base case and 25% to the bull case produces a probability-weighted value of approximately $253. The quarter improves confidence in the operating-growth assumptions, but it does not justify a higher base multiple while the cash cost of that growth is rising so quickly.

The bullish operating interpretation would be wrong if AWS growth reflects a short-lived capacity release rather than durable demand. AWS now supplies more than 60% of consolidated operating income, so slower cloud growth or pricing pressure would have an outsized effect on Amazon's valuation.

The second risk is that AI capital expenditure remains structurally higher than cash generation. Amazon's trailing operating cash flow rose by $40.27B, but net property investment increased by $66.05B. If that relationship persists, operating-income growth will not translate into free cash flow, and the valuation multiple should compress.

AWS margins could also retreat as depreciation, energy and chip costs catch up with the current infrastructure build. The reported 39.4% segment margin is a strength today, but it leaves the valuation exposed if new capacity earns lower incremental returns or competitors force lower pricing.

Finally, reported EPS could obscure the underlying trend. The $53.4B pre-tax Anthropic-related gain drove most of the increase in net income. Future remeasurements could reverse, and they do not substitute for recurring operating profit or cash flow. The thesis should therefore be judged against AWS revenue, segment margins, consolidated operating income and company-defined free cash flow rather than headline EPS.