Chip stocks whipsaw on inflation fears; NVDA, AMD, MU down 3-5% Friday

The semiconductor sector, which has been the poster child of the 2026 AI rally, faced a sharp reversal on May 15 as macro headwinds overwhelmed positive fundamentals. NVIDIA, AMD, and Micron each posted declines of 3-5%, with Micron hit hardest as memory chip investors front-ran concerns about data-centre capex deceleration. The tape showed heavy selling without corresponding institutional buying, suggesting algo-driven liquidations in levered long positions.

Several catalysts converged. First, the bond market selloff and rising yields create a macro headwind for growth-at-premium-valuations names. Second, Samsung's weakness in Seoul overnight, partly tied to North Korea geopolitical tensions, spilled into US futures and weighed on the entire semiconductor complex. Third, investors are beginning to question whether the AI capex cycle will sustain at current pace given rising energy costs and potential margin compression in data-centre operators' profit forecasts.

The near-term narrative centres on semiconductor earnings next week, with NVIDIA earnings on May 22 as the anchor. Management commentary on China revenue restoration (following the H200 export approval), gross margins, and forward capex guidanceCompany-issued forecasts of future financial performance. will be critical. Broadcom (AVGO) and others facing similar valuation resets.

Supporters counter that a one-day selloff does not invalidate the multi-year AI infrastructure build. Goldman Sachs and others maintain bull cases on NVDA above $250 post-earnings, assuming management guides to sustained capex demand. However, the rotation into Russell 2000 and lower-multiple value stocks during Friday's close (Russell +0.7%, Nasdaq -1.3%) indicates that breadth is deteriorating and top-heavy mega-cap dominance is being questioned. Memory stock valuations are now at single-digit forward PEs despite high growth, suggesting limited downside but also little conviction from new buyers.