US Stocks | AI chip slump extends on Wall St as SanDisk sinks 12%, Micron drops 9% and AMD falls 5%

SanDisk (WDC), Micron (MU), and AMD led a sharp semiconductor sell-off Tuesday, with memory chipmakers facing the heaviest pressure. This represents a critical inflection point in the AI narrative, where market participants are reassessing whether the extraordinary capital commitments justify near-term earnings acceleration. The 5–12% declines signal that investor enthusiasm for AI infrastructure plays has hit a structural limit.

The correction reflects valuation fatigue rather than fundamental business deterioration. Massive AI spending by cloud hyperscalers remains real, yet the market now questions the velocity of returns and the timeline for monetization. This reallocation away from semiconductor leaders suggests rotation out of consensus trades that have already priced in multi-year upside, creating near-term headwinds for the entire memory and logic chip complex.

Broader tech indices face collateral damage as GOOGL, MSFT, and other AI-adjacent names face profit-taking. The semiconductor downturn acts as a sentiment barometer for the entire AI infrastructure ecosystem. If this correction deepens, it may trigger wider tech sector reassessment and cap near-term upside for cloud and AI software players who depend on continued capex acceleration.

Sector implication: Technology faces medium-term headwinds from valuation compression in semiconductor leadership. The correction may temporarily benefit defensive sectors and reduce inflation pressure from capex, but prolonged weakness could signal deteriorating confidence in AI-driven earnings growth trajectories across the entire technology ecosystem.