Big Tech AI spending splits investors as Microsoft gains and Meta slumps

Microsoft's shares surged 15% on 30 July 2026 while Meta's fell 8%, as a week of Big Tech earnings exposed a divide between companies generating measurable AI returns and those still spending toward a future payoff.

The results arrived as Microsoft, Meta, Alphabet, and Amazon collectively plan to direct approximately $725bn in capital expenditure toward AI infrastructure this year, up 77% from 2025.

Microsoft posted fiscal fourth-quarter revenue of $90bn, up 18% year on year. Its Azure cloud business grew 43%, its fastest rate in four years, and paid seats for Microsoft 365 Copilot reached 30 million, up from 20 million in April. Free cash flow declined 23% to $19.6bn, but investors accepted the dip: external customers are paying for Azure capacity, which gives the spending a clear commercial anchor.

Meta's results told a different story. Revenue grew 28% to $60.8bn in the second quarter, but net income fell 14% to $15.8bn, dragged down by $2.4bn in legal charges and severance costs. Free cash flow collapsed 91% year on year to $784m, a figure that alarmed investors because Meta's AI spending primarily serves its own internal systems rather than generating external revenue. Chief executive Mark Zuckerberg raised the full-year capital expenditure forecast to between $130bn and $145bn and outlined plans for autonomous AI agents and a business-to-business AI service, but gave no timeline for either generating returns.

Apple reported its third consecutive quarter of revenue growth above 15%, reaching $108.9bn in the June quarter. The result came on strong iPhone and services sales, though outgoing chief executive Tim Cook warned investors that a global memory chip shortage would constrain sales of Macs and iPads in the months ahead. Cook, who steps down in September to be succeeded by hardware chief John Ternus, confirmed that a redesigned Gemini-powered Siri is on track for release alongside new iPhone hardware. The updated assistant will use Google's AI models for complex queries while keeping simpler tasks on-device.

Amazon's earnings rounded out the week. The company confirmed $200bn in capital expenditure for 2026, directed largely at Amazon Web Services infrastructure. Chief executive Andy Jassy said AWS growth was the fastest in 13 quarters, though the spending produced negative free cash flow. Amazon's $200bn AI commitment has drawn repeated scrutiny from analysts who want to see the build-out translate into operating income before the spending scales further.

Alphabet, which reported earlier in the week, also turned in a negative free cash flow figure after raising its 2026 capital expenditure guidance to as much as $205bn. It was the first time in Alphabet's history as a public company that free cash flow turned negative on a quarterly basis, despite an 82% rise in cloud-computing revenue.

The week's results reinforce a split that has been forming since the ChatGPT boom began in late 2022. Companies that sell AI capacity to external customers, chiefly Microsoft through Azure, can point to rising revenue as evidence the spending is working. Companies building AI infrastructure for internal use, including Meta across its advertising and social platforms, face a harder case: the benefit is real but diffuse, and it does not show up cleanly in quarterly results.

Concerns about the financial stability of large-scale AI investment have grown as the combined annual bill for the four largest spenders approaches $725bn. The market's response this week suggests investors are no longer willing to extend indefinite credit to AI spending plans without evidence of external revenue tied to that infrastructure.

Microsoft's guidance for the current quarter pointed to Azure growth of 45%, four percentage points faster than analyst expectations. Meta's revenue forecast for the third quarter, at a midpoint of $62.5bn, fell short of the $63.15bn analysts had modelled. Apple faces its own pressure point: the redesigned Siri launches in September alongside new iPhone hardware, and the company has already acknowledged the chip supply crunch will limit how many devices it can sell. John Ternus inherits a company still defining its AI identity as Cook exits after more than 14 years as chief executive.