[2026-05-21] Korea Stock Market Morning Preview | US 3 Indices Rally & Nvidia Earnings Watch
📌 One-Line Summary
Overnight rally in the three major US indices and renewed buying in AI semiconductors are expected to support a technical rebound attempt in both KOSPI and KOSDAQ today. However, with USD/KRW hovering near 1,496 won and traders waiting for Nvidia's after-hours earnings, upside may be capped — making foreign flows and FX direction the key variables to watch.
🌙 Overnight Markets
On Wednesday (May 20 local time), the three major US indices closed broadly higher, led by aggressive buying in AI semiconductor names. A pullback in the 10-year Treasury yield supported risk appetite, while anticipation around Nvidia's earnings release after today's KR session further fueled the bid.
| Index | Close | Change |
|---|---|---|
| S&P 500 | 7,432.97 | +1.08% |
| NASDAQ | 26,270.36 | +1.54% |
| DOW | 50,009.35 | +1.31% |
The NASDAQ's outperformance underscores that the AI/semiconductor concentration trade is still very much alive. Nvidia-led chip buying reversed the prior session's weakness — which had been driven by Seagate's CEO warning about memory demand bottlenecks — in a single day. The release of the FOMC Meeting Minutes (High impact) at 03:00 KST will be a critical factor: if the tone reads less hawkish than feared, it could offer an additional tailwind for Korean equities, which slumped on Wednesday (KOSPI -0.86%, KOSDAQ -2.61%) and are now ripe for a mean-reversion bounce.
💱 FX & Commodities
The USD/KRW pair sits at 1,496.45, pressing right against the psychologically critical 1,500 resistance. Intraday prints near 1,510 won were reported during Wednesday's session, signaling that FX volatility remains elevated. Whether the won breaks above 1,500 in a meaningful way is likely the single most important variable for today's foreign-investor flow.
| Asset | Level | Note |
|---|---|---|
| USD/KRW | 1,496.45 KRW | Approaching the 1,500 resistance line |
| Bitcoin (BTC) | $77,356.68 | Risk-on appetite recovering |
Bitcoin holding above $77,000 hints at improving risk appetite, which is constructive for Korean equities at the margin. That said, if US Treasury yields rebound or US equity strength fades, USD/KRW could quickly retest and break above 1,500 — at which point foreign selling pressure on Korean stocks may re-emerge.
🔥 Today's Key Themes & Sectors
1. AI Semiconductors — Bullish
The NASDAQ's +1.54% rally was led by aggressive AI semiconductor buying, and that momentum is expected to spill over to SK Hynix and Samsung Electronics, the two heavyweights of the Korean chip complex. With Nvidia reporting earnings after today's Korean close, foreign investors may re-engage with Korean chip names on hopes of a positive read-through. A return of foreign net buying in the semiconductor space would be the key engine of any sustained KOSPI rebound.
2. Samsung Electronics-Related Names — Caution
News reports indicate last-minute negotiations have resumed ahead of Samsung Electronics' general strike (D-1). Expect heightened volatility in Samsung shares and its supplier ecosystem. A breakdown in talks could raise near-term production-disruption concerns, while a successful settlement would likely trigger a relief rally as uncertainty clears. Short-term traders should consider staying on the sidelines until the outcome is confirmed.
3. High-FX Beneficiary Exporters — Watch
With USD/KRW staying elevated near 1,496 won, automakers, shipbuilders, and battery names are likely to attract incremental interest on FX translation tailwinds. If the quarter-to-date average rate settles in the 1,490s, names with strong Q1 earnings visibility could see differentiated buying.
4. Oversold Growth Names — Bullish
Yesterday's -2.61% rout in the KOSDAQ sets the stage for a technical bounce. Biotech and secondary battery small/mid-caps may offer short-term trading opportunities, though the rebound is likely to be driven by retail flows rather than foreign or institutional buying.
🎯 Scenario Outlook
| Scenario | Key Assumptions | Expected Range |
|---|---|---|
| Bull | Dovish FOMC minutes + USD/KRW stable in the 1,490s | KOSPI reclaims 7,280 / KOSDAQ tests 1,070 breakout |
| Neutral | Wait-and-see on Nvidia + limited foreign flow | KOSPI 7,200–7,260 / KOSDAQ 1,050–1,070 range-bound |
| Bear | USD/KRW breaks above 1,500 + hawkish FOMC signal | KOSPI tests 7,180 support / KOSDAQ slips toward 1,040 |
The most likely path is a neutral-to-modestly-bullish open, with a gap-up start followed by direction set by foreign-investor flows. KOSPI 7,280 should act as the first meaningful resistance — clearing it requires a clear shift to foreign net buying. Without that, the market may chop in a tight range as participants wait for Nvidia's after-hours numbers.
⚡ Key Checkpoints for Today
- USD/KRW 1,500 resistance — the single most important variable for foreign flows; a sustained break above 1,500 would likely reignite selling pressure
- Nvidia after-hours earnings — will set the direction for the entire AI/semiconductor complex; monitor after-hours moves in SK Hynix, Samsung Electronics, and chip-equipment names
- FOMC minutes interpretation — hawkish vs. dovish read will drive US 10-year yields and global risk appetite
- Samsung Electronics strike negotiations — outcome will swing large-cap volatility; watch headlines closely
- Strength of the KOSDAQ rebound from yesterday's -2.61% drop — confirm with trading-value expansion to distinguish a one-day bounce from a trend reversal
📅 Today's Economic Events
Global Schedule (High Impact)
| Time (KST) | Country | Event | Forecast / Previous / Actual |
|---|---|---|---|
| 5/21 03:00 | USD | FOMC Meeting Minutes | Forecast - / Previous - / Actual TBD |
| 5/21 10:30 | AUD | Employment Change | Forecast 16.7K / Previous 17.9K / Actual TBD |
| 5/21 10:30 | AUD | Unemployment Rate | Forecast 4.3% / Previous 4.3% / Actual TBD |
| 5/20 15:00 | GBP | CPI y/y | Forecast 3.0% / Previous 3.3% / Actual TBD |
The FOMC Meeting Minutes, released at 03:00 KST, are the most consequential event for today's session. Markets will be scrutinizing committee members' language on the path of rate cuts; a less hawkish tone would likely extend the relief rally in risk assets. At 10:30 KST, Australia's labor market data will influence regional FX and broader Asian risk sentiment.
Domestic Schedule
No major DART disclosures are flagged for today, but participants should monitor intraday corporate filings and any breaking headlines around the Samsung Electronics strike negotiations. Recent domestic news flow has highlighted growing concerns over inflation and higher rates spilling into real-economy sectors such as commercial real estate — meaning rate-sensitive names also warrant attention.
⚠️ Investment Disclaimer
This post is for informational purposes only and does not constitute a recommendation to buy or sell any specific security. Please keep the following points in mind:
- Today's session is sandwiched between two pivotal events — the FOMC minutes interpretation and the after-hours Nvidia earnings release. The opening tone and the closing tone may differ materially.
- With USD/KRW perched near 1,496, foreign flows can flip negative very quickly. Track whether 1,500 holds as resistance in real time.
- Yesterday's -2.61% KOSDAQ drop sets up a technical bounce, but it is premature to declare a trend reversal — confirm with trading value and synchronized foreign/institutional buying.
- Samsung Electronics strike-related volatility can drive index-level moves; monitor headlines and check your exposure accordingly.
- All investment decisions are the sole responsibility of the investor. Adhere to fundamental risk-management practices, including scaled entries, stop-loss discipline, and proper position sizing.
Disclaimer: This post is for informational purposes only and does not constitute investment advice. All investment decisions are the sole responsibility of the investor. Past performance does not guarantee future results.
🇰🇷 Korean Version: https://kai-search.tistory.com/manage/posts/
댓글
댓글 쓰기