S&P 500 drops 0.6% Wednesday as semis slide on Micron price target cut, while financials gain. The AI spending trade faces a selectivity test ahead of PCE data.
The S&P 500 fell 0.6% Wednesday, snapping a three-day winning streak. The selloff followed a batch of earnings and macro data that forced a harder look at the cost side of the artificial-intelligence buildout. Semiconductors led the decline. The VanEck Semiconductor ETF (SMH) dropped 1.4%, paced by Micron Technology (MU). The stock slid 2.3% after a research note trimmed its price target on memory pricing concerns. The note did not question AI demand. It flagged a slower near-term revenue ramp. Traders said the timeline for HBM3E volume shipments slipped a quarter in one model.
Micron carries an Alpha Score of 79, reflecting strong fundamentals despite the near-term pricing pressure. The tech sector's high valuation leaves little room for such stumbles. The S&P 500 information technology sector trades at 28x forward earnings. When a supply-chain hiccup moves a stock 2% in a session, some traders said the crowded thesis is starting to feel thin.
The selloff was not uniform. State Street Corp. (STT) rose 1.1%, extending its post-earnings rally. The bank's fee-income growth and cost-control narrative held up. Financials trade at roughly 15x forward earnings, about half the multiple of the tech-heavy Nasdaq. Capital moved into cheaper pockets, traders said. The divergence between semis and financials hints at a rotation out of pure AI momentum into laggard sectors.
The AI spending thesis is not dead. Hyperscaler capital expenditure is still accelerating. Microsoft, Amazon, and Alphabet all told shareholders that 2025 capex would be up year-over-year. The market is becoming more selective. It is asking which companies actually monetize the buildout and which are merely renting floor space.
For the S&P 500, the near-term path depends on whether the rotation stays orderly. A shallow dip in semis and a modest lift in banks is digestible. A disorderly unwind would push the index below its 50-day moving average and open a test of 5,600. Thursday's jobless claims and Friday's personal consumption expenditure data provide the next macro anchor.
Prepared with AlphaScala research tooling and grounded in primary market data: live prices, fundamentals, SEC filings, hedge-fund holdings, and insider activity. Each story is checked against AlphaScala publishing rules before release. Educational coverage, not personalized advice.