Big Tech Needs to Justify AI Spending as Investors Dump Stocks Ahead of Q2 Earnings

What happened

Bloomberg reported on July 19 that the AI stock segment is correcting: Nasdaq 100 lost 4.1% in one week, the Philadelphia Semiconductor Index fell 10% — worst since April 2025. Investors are no longer satisfied with strategy narratives without numbers.

Context and impact

Companies are entering Q2 2026 earnings season with the highest historical capex outlook — Bloomberg estimates combined hyperscaler capex at $650B in 2026 and over $1.1T in 2027. Analysts are demanding concrete ROI metrics. The situation mirrors AI capex-skepticism from late 2024, but at far higher absolute valuations.

Details

• Nasdaq 100: -4.1% in one week (through July 19)
• Philadelphia Semiconductor Index: -10% — worst since April 2025
• AI capex 2026: estimated $650B (combined hyperscalers)
• AI capex 2027: over $1.1T per analyst estimates
• Triggers: Kimi K3 launch, overbuilding fears, approaching Q2 earnings
• New market demand: ROI metrics and concrete numbers, not just strategic vision