US Market Opens: Semiconductor Slide, Broad Rotation Holds

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July 15, 2026 · 23:41 KST (10:41 ET) · US Market First Hour

US First Hour — Rotation, Not Panic

US markets opened with semiconductor gap-ups, but heavy profit-taking emerged within the first hour. SOXX -3.25%, AMD -5.29%, MU -7.24%. Yet the S&P 500 (+0.19%), Dow (+0.38%), Russell 2000 (+0.55%), and financials (+1.09%) all rose. The VIX dropped to 16.18 — this is an orderly sector rotation after two days of massive chip gains, not a systemic selloff.

Key Signals

• 🔴 SOXX (Chip ETF): -3.25% — opened +1.4%, heavy fade

• 🔴 AMD: -5.29% — opened +2%, worst reversal among large chips

• 🔴 MU (Micron): -7.24% — memory chip hit hardest

• 🟢 S&P 500 (SPY): +0.19% — broad market holding up

• 🟢 Dow (DIA): +0.38% — value rotation in progress

• 🟢 Russell 2000 (IWM): +0.55% — small-caps rising

• 🟢 Financials (XLF): +1.09% — strongest sector

• 🟢 VIX: 16.18 (down) — fear gauge declining, no panic

• 🔴 EWY (Korea ETF): -4.12% — concentrated semiconductor weight

What This Means

The sharp semiconductor selloff is concentrated profit-taking after two days of outsized gains. The broader market continues to rise and the VIX is declining — confirming rotation, not panic. Near-term pressure on chip names is likely, but constrained by the broader market’s resilience.

Next Checkpoints (Thu Jul 16 KST)

05:00 US Close Final semiconductor and macro readings

06:45 KR Pre-Risk Full US close readback and KOSPI direction

08:45 KR Preopen KPI200 and chip stock preopen indications

09:03 KR Open Reset First 3 minutes direction check

Data and Limitations

Live data from public financial data services (10:41 ET snapshot). US regular session is in progress. This is a market observation note, not investment advice. Past patterns do not guarantee future outcomes.

No broker / no order / no transfer. Market observation only.