Keyword → semiconductor selloff

SK Hynix Falls 15.4% in Record Seoul Plunge — KOSPI Triggers 7th Circuit Breaker of 2026 as AI Memory Unwind Spreads to US Premarket

SK Hynix shares fell 15.4% in Seoul — their worst single-session decline on record — dragging the KOSPI down 8.95% and triggering a 20-minute market-wide circuit breaker, the seventh of 2026. The rout came just one day after SK Hynix's $26.5 billion US ADR debut, as arbitrage selling, a downgraded Q2 profit forecast from Korea Investment & Securities, and renewed US-Iran tensions converged. Micron Technology and the VanEck Semiconductor ETF are both lower in US premarket trading.

Micron Technology Falls 10.6%, Sandisk Drops 10.6%, Intel Loses 9% — Semiconductor Rout Wipes Out $1T+ in One Session

Micron Technology and Sandisk each plunged more than 10.6% Wednesday while AMD fell 6.9% and Intel sank 9%, as profit-taking in the AI-chip complex erased more than $1 trillion in semiconductor market value. The VanEck Semiconductor ETF lost 5.4%. South Korea's Kospi collapsed 7.89% overnight in response, with SK Hynix down over 12%. Analysts attributed the selloff to valuation fatigue after the sector's extraordinary first-half run rather than any fundamental deterioration.

Semiconductor Stocks Fall 7–9% in Premarket — Rate-Hike Fears and Profit-Taking Hit Micron, SanDisk, Nvidia After Record Q2

Micron Technology fell 7%, SanDisk dropped 9%, and Nvidia shed 2.5% in premarket trading as investors took profits following the best quarter for chips since the sector's inception, with rate-hike fears amplifying the selling. The VanEck Semiconductor ETF gained 82% in the first half of 2026. Thursday's hotter-than-expected PCE print gave traders additional cover to trim exposure in the year's most crowded trade as the second half of 2026 begins.

S&P 500 Futures Slip 0.3% to Open H2 2026 — Nasdaq-100 Futures Drop 0.9% as Best Quarter Since 2020 Gives Way to Rate-Hike Anxiety

S&P 500 futures fell 0.3% and Nasdaq-100 futures dropped 0.9% to open the second half of 2026, reversing Tuesday's gains that capped the strongest quarter for US equities since 2020. The S&P 500 rallied more than 14% in Q2, the Nasdaq gained roughly 20%, and the Dow added over 12%. Now markets face a Fed projecting at least one rate hike, a weak ADP jobs print, and a chip sector under profit-taking pressure before Friday's nonfarm payrolls report.