Key Highlights

  • Meta recorded negative free cash flow of $2.12 billion on $34.91 billion of third-quarter capex, up 80%.
  • The four largest cloud spenders guide 2026 capex to approximately $735 billion using midpoints (calculated), against a $725 billion April estimate.
  • Google Cloud sales rose 82% to $24.8 billion, against 43% for Azure and 37% for AWS.
  • Cisco traded near 472 times earnings in 2000, versus roughly 24 to 26 times for Nvidia.
  • The Nasdaq 100 climbed 1.1% on October 22, and Microsoft and Alphabet report on October 28.

What Is the AI Bubble Debate, and What Do Capex Totals and Big Tech Cash Flow Show Ahead of Earnings?

The AI bubble debate asks whether spending by the largest cloud companies will be repaid by revenue and cash flow. The Nasdaq 100 climbed 1.1% on Thursday, October 22, as earnings eased spending fears. An April tally put 2026 capex at Microsoft (NASDAQ:MSFT), Alphabet (NASDAQ:GOOGL), Meta Platforms (NASDAQ:META) and Amazon (NASDAQ:AMZN) near $725 billion, and the latest guidance sums to approximately $735 billion (calculated).

Cisco (NASDAQ:CSCO) traded near 472 times earnings in 2000, against roughly 24 to 26 times for Nvidia (NASDAQ:NVDA), which finished at $221.97 on October 21, up 2.54%. Meta recorded free cash flow of negative $2.12 billion on $34.91 billion of third-quarter capex, whereas Google Cloud expanded 82% and Azure 43%.

AI Bubble Talk: Is the Trade Popping or Being Repriced?

The evidence suggests a trade being tested instead of broken. AI-linked stocks recovered after solid earnings on October 22, even though tech and chip shares sold off earlier in October and hedge funds markedly cut technology exposure. A prominent hedge fund founder stated investors were almost certainly in an AI bubble, and the chief executive of BlackRock (NYSE:BLK) warned that data center delays could raise computing costs and slow economic growth.

AI Capex Total: Is $725 Billion Still the Right Number for 2026?

The $725 billion figure dates from late April, when a tally of 2026 plans showed spending 77% above the record $410 billion of 2025. Later guidance moved in different directions, but the sum has not fallen: roughly $735 billion using midpoints, or roughly $750 billion if Microsoft is counted at its earlier comparable level of $190 billion, both calculated. Amazon guided roughly $220 billion, Alphabet $195 billion to $205 billion and Meta $135 billion to $145 billion.

AI Capex vs Dot-Com: Is This Buildout Different?

In part. The spenders are profitable companies whose products already generate revenue, but the scale and concentration echo that period. A July analysis found the Shiller price-to-earnings ratio above 40 for the first time since the dot-com crash, the top ten stocks at roughly 35% of the S&P 500 against roughly 25% at the dot-com peak, and Oracle (NYSE:ORCL) down 19% in the week to June 26, its worst week since the dot-com bubble. It additionally set roughly $400 billion of AI infrastructure spending against roughly $100 billion of enterprise AI revenue.

AI Capex by Company: How Do the Four 2026 Budgets Compare?

Amazon guided roughly $220 billion, Alphabet $195 billion to $205 billion, Microsoft roughly $175 billion and Meta $135 billion to $145 billion. Microsoft's figure is not directly comparable: it declined from roughly $190 billion as a consequence of an accounting change that extends the useful life of data centers, with underlying plans explained as unchanged. Amazon spent $54.2 billion on property and equipment during the second quarter, against $32.2 billion a year earlier, the largest single-quarter figure of the group.

Microsoft: Why Did the Same Expenditure plan Rattle Shares in April but Not in July?

Microsoft the shares moved lower roughly 5% on April 30 after a plan of approximately $190 billion for 2026. On July 29 it disclosed fiscal revenue for the fourth quarter of $90.0 billion, up 18%, and Azure growth of 43%, with annual Azure revenue above $100 billion, and reports put the after-hours gain at approximately 9% to 14%. Free cash flow was $19.6 billion during the June quarter on capex of $41 billion. the shares ended the session at $532.95 on October 21, and results come on October 28 with Azure growth of roughly 45% guided in constant currency.

Meta: Why Is Spending Outrunning Cash Flow?

Meta disclosed on Wednesday, October 21 that sales grew 26% to $64.60 billion, above forecasts of roughly $63.3 billion, but capex including finance leases hit $34.91 billion, up 80%. Free cash flow was negative $2.12 billion against positive $10.6 billion a year earlier. It lifted the floor of its 2026 capex range to $135 billion from $130 billion and kept the ceiling at $145 billion. A $9.89 billion legal charge cut GAAP earnings to $3.83 per share, against $7.40 excluding the charge.

Alphabet: Why Did Investors Cheer Capex in April but Sell It in July?

Alphabet climbed roughly 6% on April 30 after guiding 2026 capex to $180 billion to $190 billion, the only one of the four largest cloud spenders to rally. in July the ceiling climbed to $205 billion, Google Cloud sales rose 82% to $24.8 billion and free cash flow moved below zero for the first time, at $5.9 billion. The shares moved lower 7% on the Thursday after that report, and debt climbed 111% to $98 billion during the first six months of 2026.

Nvidia: Why Are Its Biggest Customers Still Raising Expenditure plans?

Nvidia finished at $221.97 on Wednesday, October 21, up 2.54% against a 1.05% rise for the Nasdaq Composite, an outperformance of roughly 1.5 percentage points (calculated). The buyers of its accelerators are the same companies reporting record cloud growth, and Microsoft attributed roughly $25 billion of its original plan to higher memory and component costs. On October 21 Super Micro (NASDAQ:SMCI) raised its fiscal revenue for the first quarter forecast to $18.5 billion to $19.5 billion, and Dell (NYSE:DELL) finished up by 5.27%.

AI Bubble Debate Compared: How Do Spending, Growth and Cash Flow Line Up?

Using midpoints, Amazon is roughly 30% of the approximately $735 billion total and Alphabet roughly 27%, and Amazon's $220 billion is roughly 1.57 times Meta's $140 billion midpoint. The total sits roughly $10 billion, or 1.4%, above the April tally of $725 billion, all calculated.

Google Cloud's 82% growth is 39 percentage points above Azure's 43% and 45 points above AWS at 37%. Cisco's 472 times earnings is roughly 18 to 20 times Nvidia's 24 to 26 times, and the top ten stocks' share of the S&P 500 is roughly 10 points above at the dot-com peak, all calculated.

Which Upcoming Developments Matter for Microsoft and Alphabet on October 28, Amazon and Intel on October 29?

Microsoft and Alphabet report following the trading close on Wednesday, October 28, and subsequently Amazon and Intel (NASDAQ:INTC) on Thursday, October 29. Investors will examine whether Alphabet's range rises again, whether Amazon holds roughly $220 billion, and how Microsoft's first-quarter capex stands against its guide of over $50 billion. Intel raised capital spending outlook to $20 billion from $18 billion in July, and Meta's next update comes with its fourth-quarter report.