The Closing Bell: More swings for AI stocks drag Wall Street back on the roller coaster
Wall Street swung again as AI chip and memory stocks reversed early gains. The S&P 500 fell 0.3% after trading from a 1% gain to a 2.3% midday loss; the Nasdaq dropped 1%. Micron slid 1.4% after a 10% plunge, following a 9.9% surge Monday. Oil eased; Brent fell 3% to $91.45.

High intraday volatility in MU tied to AI hardware sentiment and positioning unwind.
Micron shares swung from a 4% jump to a 10% plunge after AI-chip/memory sellers broke early gains to losses.
Near-term downside bias/continued volatility risk as AI-stock selloff read-through persists.
Background
The article is a daily market wrap highlighting sharp reversals in AI-related stocks and a separate, disclosed M&A deal.
Why it matters
AI hardware names (memory/chips) sold off after early gains, while the GSK–Nuvalent acquisition agreement created a strong, deal-specific repricing for NVLT and a smaller positive reaction for GSK.
Market relevance
Traders get two actionable threads: (1) AI-hardware beta is highly unstable intraday, and (2) a fresh $10.6B M&A deal drives a large, tradable repricing in NVLT (and smaller in GSK).
Market effects
AI chip/memory names are trading as a crowded complex where early gains can reverse sharply on selling pressure.
Europe and Asia indexes dipped after larger moves in Asia, reinforcing global risk sentiment around tech/AI.
Oil-price swings tied to Strait of Hormuz expectations affect inflation/bond-yield pressure, which can amplify equity volatility including AI stocks.
Alternative perspectives
The article frames the AI selloff as potentially a “shake-out” after excessive optimism, implying the drawdown could be temporary rather than a trend break.
The piece links equity pressure to rates/inflation expectations and mortgage-rate costs; traders may be over-weighting AI-specific narratives versus macro yield sensitivity.
Key entities
- companyMicron Technology
Shares reversed from +4% to a -10% plunge intraday amid AI-stock selling.
- companyMarvell Technology
Dropped 7.6% as AI winners erased early gains.
- companyAdvanced Micro Devices
Sank 3% after erasing early-morning gains during the AI reversal.
- companyGSK
Agreed to buy Nuvalent for $10.6B; NY-listed shares rose 1.2%.
- companyNuvalent
Soared 39.3% after the $10.6B acquisition agreement.



