August 18, 2026

Semiconductor and growth stocks took the hardest hits in yesterday's close: MU crashed 7.0%, AMD -4.3%, NVDA -2.2%, while QQQ shed 1.7% and SPY retreated to August 4 lows. The rot stems from AI capex reality checks—$10T in data center builds face feasibility constraints, and Micron's pullback signals chipmakers are pricing in slowdown. Meanwhile, ADBE surged 3.6% and CRM climbed 2.7%, suggesting rotation into enterprise software. Watch Treasury yields (30-year at 5.33%, a 19-year high) and how crypto holds overnight (BTC, ETH flat); if equities gap lower at open, expect more chip carnage and a hunt for AI infrastructure bottleneck plays.

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• MU -7%, AMD -4.3%, NVDA -2.3%: chip capex thesis cracking
• SPY at August 4 lows; QQQ -1.7% on growth rotation
• 30-year Treasury yields hit 19-year high at 5.33%
• $10T AI data center capex may never materialize
• ADBE +3.6%, CRM +2.7%: money fleeing semiconductors for SaaS
• BTC, ETH flat; geopolitical risk (Iran, Gaza) in mix

• MU — Micron leading broader chip selloff amid $10T data center capex feasibility concerns and AI spending slowdown signals.
• QQQ — Growth equity rotation out as Treasury yields surge to 19-year highs and semiconductor weakness spreads.
• ADBE — Enterprise software strength as capital rotates from capex-heavy chips to software margin plays.

AI capex bubble deflation & data center feasibility crisis · Treasury yields at 19-year highs pressuring growth equities · Semiconductor selloff: MU, AMD, NVDA leading decline · Enterprise SaaS rotation (ADBE, CRM outperform) · Geopolitical risk: Iran tensions, Gaza strikes, US debt concerns — hottest: AI infrastructure capex reality check—$10T buildout hitting hard limits

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