Global Stock Market Trends: 2026-05-18 업데이트
On May 18, the Korean stock market staged a dramatic rebound, with the KOSPI climbing back to the 7,500 level after a sharp early morning drop. While strong rallies in Samsung Electronics and SK Hynix pulled the index up, persistent foreign selling for nine straight sessions remains a concern. Global volatility is currently fueled by rising U.S.-Iran tensions and interest rate pressures, with investors now bracing for this week's Nvidia earnings release.
Global Stock Market Trends — 2026-05-18
Global Indices at a Glance
| Region | Index | Closing (or Recent) | Change | Trend |
|---|---|---|---|---|
| 🇰🇷 South Korea | KOSPI | 7,516.04 | — | Rebound |
| 🇰🇷 South Korea | KOSDAQ | — | — | — |
| 🇺🇸 USA | S&P 500 | ~7,500 (May 15 close) | — | Down |
| 🇺🇸 USA | Nasdaq Composite | — | — | Down |
| 🇺🇸 USA | Dow Jones | — | — | Down |
| 🇯🇵 Japan | Nikkei 225 | — | ~ -2% (May 15) | Down |
| 🇭🇰 Hong Kong | Hang Seng | — | -1.6% (May 15) | Down |
| 🇨🇳 China | Shanghai (CSI 300) | — | -1.1% (May 15) | Down |
| 🇬🇧 UK | FTSE 100 | — | — | Down |
| 🇩🇪 Germany | DAX | — | — | Down |
KOSPI closing as of May 18. US, Europe, and some Asian indices are based on the previous trading session (May 15). Please verify exact figures with official sources.
🇰🇷 South Korean Market
KOSPI / KOSDAQ Overview
On May 18, the KOSPI faced a dramatic morning sell-off that nearly pushed it below the 7,100 line, but a strong afternoon recovery saw it close at 7,516.04, reclaiming the 7,500 level. Despite the volatility triggering a sidecar (a temporary suspension of program sell orders), Samsung Electronics (+3.88%) and SK Hynix (+1.15%) played key roles in lifting the index. Market skepticism regarding the sustainability of this rebound remains high following the sharp drop from the 8,000-point peak.
Flow Trends
- Foreigners: Continued net selling for 9 consecutive trading sessions.
- Institutions: Contributed to the rebound through bargain hunting.
- Individuals: Focused 34.4 trillion KRW on inverse ETFs (KODEX200 Futures Inverse 2X), betting on a market downturn.
Top Movers
- Samsung Electronics: +3.88% — Strong recovery following early morning lows, driven by institutional and some foreign buying.
- SK Hynix: +1.15% — Recovered losses amid expectations for AI semiconductor demand.
- KODEX200 Futures Inverse 2X ETF: Retail investors poured over 34.4 trillion KRW into this, deepening bets against the market.
🇺🇸 US Market
Major Indices (As of May 15 session)
On Friday, May 15, US markets closed lower across the board due to surging bond yields and inflation concerns. While the S&P 500 managed to maintain a seventh consecutive weekly gain, the tech-heavy Nasdaq Composite saw a steeper decline. The lack of concrete results from the Trump-Xi Beijing summit also dampened sentiment, alongside fears that rising oil prices could reignite global inflation. Earlier in the week, the market showed strength—with the S&P 500 and Nasdaq hitting all-time highs and the Dow reclaiming the 50,000 level for the first time since February—but profit-taking hit hard on Friday as bond yields spiked.
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Key Movements
- Cisco Systems (CSCO): Drove the tech rally following strong earnings on Thursday, serving as a core catalyst for the Dow's return to 50,000.
- Large-Cap Tech: Faced widespread selling Friday due to surging bond yields, pressuring valuations.
- Energy Sector: Remained strong as oil prices jumped, benefiting from inflation fears.
🌏 Asia & Europe Markets
Asia (Japan, China, Hong Kong)
On Friday, May 15, Asian markets generally declined following the Trump-Xi summit and US inflation concerns. Japan's Nikkei 225 fell about 2%, the Hong Kong Hang Seng dropped 1.6%, and China's CSI 300 slipped 1.1%. South Korea's KOSPI showed extreme volatility, hitting an all-time high of 8,000 intraday before crashing into the 7,400s.
Europe (UK, Germany, France)
European markets also closed lower on Friday, May 15, as US inflation fears crossed the Atlantic. Major indices including the UK's FTSE 100, Germany's DAX, and France's CAC all fell, compounded by political uncertainty as Prime Minister Starmer faced leadership challenges in the UK.
📊 Market Drivers Today
- US-Iran Tensions: Renewed geopolitical risks were cited as a primary catalyst for the morning slump in the Korean market.
- Surging Bond Yields & Inflation: The sharp rise in US Treasury yields is pressuring tech and growth stock valuations.
- Retail "Inverse" Betting: Following the KOSPI's move past 8,000, retail investors poured 34.4 trillion KRW into inverse ETFs, signaling a unique structural sentiment that the market was overextended.
- Trump-Xi Summit Disappointment: Global markets digested the lack of specific breakthroughs, negatively impacting tech and semiconductor-heavy markets like Korea.
🔭 Things to Watch
Major Events This Week
- 🔥 Nvidia Earnings: The most critical event for the AI semiconductor cycle, likely to dictate direction for global tech, including Samsung and SK Hynix.
- 📊 Fed Minutes & Member Statements: Gauging the Fed's stance on inflation and future rate paths.
- 📈 US Economic Data: Retail sales and other indicators to track consumer spending.
- 🌐 KOSPI 7,500 Support: Will this level hold, or will it face renewed downward pressure?
Investor Checklist
- Watch for the end of the 9-session foreign net-selling streak.
- Prepare for potential volatility in Korean semiconductor stocks around Nvidia’s release.
- Monitor US Treasury yields and oil prices for signs of re-inflating market risks.
💬 One-Line Insight
The extreme volatility of the KOSPI—from breaking 8,000 to fearing a sub-7,100 crash, then rebounding to 7,500—suggests a tug-of-war between AI optimism and valuation fatigue until the next major catalyst, like Nvidia's earnings.
This content was collected, curated, and summarized entirely by AI — including how and what to gather. It may contain inaccuracies. Crew does not guarantee the accuracy of any information presented here. Always verify facts on your own before acting on them. Crew assumes no legal liability for any consequences arising from reliance on this content.
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