Microsoft, Amazon Surge 6% as AI Stocks Rebound

Microsoft and Amazon each gained about 6% on Wednesday as investors rotated back into mega-cap AI leaders, helped by Azure's 48% growth and lower-than-expected capital spending.

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What Drove Microsoft's Jump?

Microsoft's rise came from a combination of faster cloud growth and a smaller-than-expected investment bill. Azure revenue of $33.165 billion topped the market forecast of $32.84 billion. Total quarterly revenue was about $92.3 billion, and the company generated $18.6 billion in free cash flow for the quarter ended in September.

Capital expenditure reached $45.2 billion, up from $34.9 billion a year earlier but under the roughly $50 billion Microsoft had indicated. The shortfall reflected delays in the delivery of some third-party data center capacity scheduled for the quarter. About three-quarters of the spending went to short-lived assets such as memory chips and storage.

Management guided Azure growth of 49% to 50% in constant currency for the next quarter. It also said it expects to spend about $170 billion on capital expenditures and finance leases in calendar 2027. The spending is large, but it is paired with a commercial backlog reported at about $677 billion.

Why Did Amazon Rise Alongside Microsoft?

Amazon moved in step because investors treat the two companies as the main gauges of cloud and AI demand. Amazon Web Services recently reported quarterly revenue of about $46 billion, growth of around 39%. That leaves two large providers expanding at a pace that supports the case for continued data center investment. The gap in how the market views the two is narrowing. Azure grows faster, while AWS still holds the larger revenue base.

For investors tracking nasdaq amazon and its large-cap peers, the session reversed part of a period in which spending plans drew more attention than the revenue they were meant to produce. Companies that can show demand converting into reported cloud revenue were rewarded. Those with less visible returns on capex were not.

How Does Lower Capex Change the AI Investment Debate?

Lower-than-expected capex changes the debate because it reduces the near-term pressure on cash flow and margins without weakening the growth story. For most of the past year, the central question for ai stocks has been whether the scale of data center, chip and power commitments can be matched by cloud revenue. Microsoft's quarter offered a partial answer. Revenue growth accelerated, free cash flow stayed strong, and spending came in under plan.

The caveat is timing. Microsoft said the capex shortfall stemmed from delayed capacity deliveries, not a decision to invest less, and spending could rise in coming quarters. The 2027 outlook of roughly $170 billion confirms that the investment cycle remains in its expansion phase. The market's reaction suggests investors are willing to accept that scale as long as Azure and AWS keep growing at rates near 40% or higher.

Market Reaction

The move extended beyond the two companies. Large AI-linked technology stocks attracted buying as capital shifted away from defensive and smaller-cap holdings. Microsoft's gain followed its results and a rotation that built through the week, and Amazon's matching advance placed both stocks among the strongest performers in the large-cap technology group.

The two shares sit at the center of major benchmark and technology-focused funds, so their gains lifted index-level performance. Hyperscaler results in recent quarters have repeatedly set the tone for the sector, with strong cloud numbers producing sharp relief rallies.

What Comes Next for Cloud and AI Spending?

The next test is whether capex stays in line with revenue. Microsoft's quarterly spending is expected to rise above $50 billion in the December quarter as delayed capacity arrives. Investors will watch whether Azure holds growth near the guided 49% to 50% as that capacity comes online. For Amazon, the focus is on whether AWS can keep accelerating from its current pace of about 39% growth.

Supply constraints remain a limiting factor. Memory, power and data center availability affect how quickly the largest providers can turn their backlog into revenue. Any further delays would shift revenue recognition and capex timing, as they did this quarter.

Outlook

The rebound in Microsoft and Amazon reflects a shift in focus from the size of AI spending to its return. Azure's 48% growth, a $677 billion backlog and capex below forecast gave investors evidence that demand is absorbing the supply being built. The $170 billion spending plan for 2027 keeps scrutiny high, and the next round of quarterly results will show whether revenue growth continues to justify it.