Will aggregate hyperscaler AI capex (Google, Amazon, Microsoft, Meta) grow >20% YoY in Q2 2026?

All four major hyperscalers (Google, Amazon, Microsoft, Meta) have publicly committed to accelerating AI infrastructure spending in 2026. Their CY2025 capex was already growing rapidly. Google stated plans for $75B+ in 2025 capex (up from ~$50B). Meta guided $60-65B for 2025. Microsoft signaled continued acceleration. Amazon has been investing aggressively in AWS infrastructure. For Q2 2026 aggregate to be below 20% YoY growth, it would require a meaningful pullback from these commitments — possible but unlikely given the competitive dynamics of the AI race. Each company fears falling behind in AI infrastructure. The risk is macro-economic (recession causing budget cuts), not AI-specific demand.

The AI capex cycle has strong momentum. Q2 2025 was already a high-growth quarter, so the base is elevated — but 2026 guidance suggests continued acceleration from that elevated base. The 20% YoY threshold is relatively modest given recent trajectory (most hyperscalers growing capex 40-80% YoY). The primary risk is a macro shock (tariffs, recession) that forces across-the-board budget cuts. A secondary risk is AI ROI skepticism causing one or more hyperscalers to slow investment. Both are possible but neither is the base case for Q2 2026.

The capex commitments are largely already contractually committed — data center construction, chip orders, and infrastructure buildouts have long lead times. Q2 2026 capex was largely set by decisions made in 2025. This inertia makes a sudden drop below 20% YoY growth unlikely in Q2 specifically. The longer-term risk (H2 2026 or 2027) of capex moderation is more realistic. For Q2 2026, the committed spending pipeline provides high confidence that aggregate growth exceeds 20%. The main tail risk is a hyperscaler-specific event (e.g., major project cancellation or delay).

This is a high-probability event. All four hyperscalers have guided for significant capex increases in 2025-2026. The AI infrastructure arms race shows no signs of slowing. Google's $75B+, Meta's $60-65B, Microsoft's and Amazon's continued acceleration all point to aggregate growth well above 20% YoY. The only scenario for NO is a synchronized macro shock or a sudden AI winter — neither is expected by Q2 2026.

Aggregate hyperscaler capex has been growing rapidly. For Q2 2026 to show <20% growth, the base effect from Q2 2025 (which was itself a high-growth quarter) would need to be combined with actual spending moderation. This is possible if AI ROI concerns intensify or macro conditions deteriorate. However, the competitive dynamics of the AI race make unilateral pullback risky for any individual company. The consensus view strongly favors continued high growth, though consensus views about capex cycles are not always correct.

The four hyperscalers collectively spent roughly $170-200B on capex in CY2025. For Q2 2026 to grow <20% YoY, aggregate Q2 spending would need to fall below the prior year Q2 level multiplied by 1.20. Given that all four companies have publicly committed to maintaining or accelerating AI capex, and construction/ordering cycles create spending inertia, this threshold is very likely to be met. The probability is held below 0.85 to account for macro tail risk.

All four hyperscalers have committed to aggressive AI capex. The AI infrastructure arms race dynamic makes >20% YoY growth the base case. Only a macro shock would change this trajectory. High probability event.

Strong commitment from all hyperscalers supports >20% growth. The elevated base from Q2 2025 means the absolute dollar bar is higher, but guidance suggests continued acceleration. Main risk is an economic downturn that forces spending cuts. Likely above 20%.

Capex commitments have long lead times. Q2 2026 spending decisions were largely made in 2025. The AI infrastructure buildout is in full swing with no signs of moderation. >20% YoY aggregate growth is highly likely.