US stock markets today: Dow rises as Micron jumps on AI outlook, Apple slides after price hikes

Micron Technology (MU) led semiconductor strength on renewed optimism around artificial intelligence demand and chip cycle recovery. The strength reflects persistent institutional conviction that AI infrastructure buildout will sustain elevated semiconductor utilization rates and margin expansion for memory and logic suppliers through 2025.

Apple (AAPL) faced headwinds following announced price increases on flagship products, signaling potential consumer pushback against premium valuations in a discretionary-sensitive macro environment. The divergence between MU upside and AAPL downside highlights a critical market bifurcation: infrastructure beneficiaries outperforming hardware/consumer-facing tech.

The mixed broader index action—with cyclical gains offset by consumer weakness—reflects uncertainty around near-term demand destruction from higher pricing. Equity positioning remains cautious despite AI narrative strength, suggesting investors are selectively rotating within Technology rather than broadly bullish on sector.

Sector implication: Technology shows internal dispersion typical of sector rotation phases. AI-adjacent suppliers (semiconductors, infrastructure) command momentum while consumer-discretionary tech faces valuation and demand headwinds. This pattern may persist if consumer resilience data continues to soften.