KOSPI, 675포인트 급등락 및 변동성 보고서
코스피는 사상 첫 8,000선 돌파 이후 하루 최대 675포인트까지 움직이는 극심한 롤러코스터 장세를 보이고 있습니다. 대형주 쏠림과 개인의 ETF 거래 급증이 변동성을 키우는 가운데, 5거래일 연속 오르는 원달러 환율이 시장의 불안을 더욱 부채질하고 있습니다.
KOSPI Market Volatility and Influencing Factors Report — May 20, 2026
1. KOSPI Market Indicators and Supply/Demand Status
- KOSPI Intraday Range: The index is experiencing extreme volatility, with daily swings reaching as high as 675 points.
- Individual Investor Net Buying: During the recent market plunge, individual investors recorded a record-breaking net purchase of 25.5418 trillion KRW in the KOSPI market.
- V-KOSPI (Korea Fear Index) Trends: Even as the KOSPI hits record highs, the "fear index" has been rising for three consecutive months. Record-level net selling by foreign investors this month is fueling this increase.
- 52-Week KOSPI Range: The KOSPI has fluctuated by 192.72% over the past 12 months, with a 52-week range between 2,588.09 and 8,046.78.
2. Key Volatility Factors Today
① Structural Volatility Intensifies: Concentration in Large-Cap Stocks and ETF Surge
The KOSPI is seeing a "rollercoaster" market with intraday swings up to 675 points. Experts point to the structural increase in volatility as a result of the concentration of capital in large-cap stocks combined with a surge in ETF (Exchange Traded Fund) trading by retail investors.
② Persistent Record Net Selling by Foreigners
Foreign investors have continued their massive net selling throughout this month, which acts as a core driver for the rise in the V-KOSPI. Even while the KOSPI index remains on an upward trend, the strong selling pressure from foreigners is triggering market anxiety.
③ Impact of Soaring U.S. Treasury Yields and AI Tech Stock Plunge
The spike in U.S. Treasury yields and the sharp drop in AI tech stocks have directly impacted the KOSPI. On May 18, the index fell nearly 5% during the session, triggering a sidecar. While it recovered to close above the 7,500 mark thanks to buying from individuals and institutions, analysts warn that the "burden of overspeeding" has not yet been resolved.
3. Macro Factors and Economic Indicators
① Won-Dollar Exchange Rate Rises for 5 Consecutive Days
The Won-Dollar exchange rate has risen for the fifth consecutive day to reach 1,498 KRW, driven by net selling from foreign investors. The climbing exchange rate raises concerns about further foreign capital flight, contributing to market volatility.
② Won Weakness: Falling Past 1,500 KRW to Monthly Lows
The Korean Won has weakened past 1,500 KRW against the dollar, hitting its lowest point in over a month. This is a result of renewed risk-off sentiment and a strong U.S. Dollar.
③ Securities Firms Maintain "10,000 Point" Forecast for KOSPI
Despite high volatility, local brokerages remain optimistic, projecting the KOSPI will reach 10,000 points within the year, citing improved corporate earnings led by semiconductors and increased AI investment.
④ H2 KOSPI Range Projected at 6,600–9,100 Points
Hanwha Investment & Securities has projected the KOSPI range for the second half of the year to be between 6,600 and 9,100 points, focusing on the potential growth of non-semiconductor and non-IT sectors.
4. Analysis Summary and Notes for Investors
The KOSPI has entered a phase of extreme volatility following its breach of the all-time high (8,046.78). A complex mix of negative factors—including soaring U.S. bond yields, record-high foreign selling, and a rising Won-Dollar exchange rate—means the market's "overheated" state has not yet fully cooled. While dip-buying from retail investors has helped cushion short-term drops, the structural issues of large-cap concentration and the ETF trading surge remain, making the possibility of further sharp declines difficult to rule out. Investors are advised to closely monitor the Won-Dollar exchange rate (currently at the 1,498 level), foreign capital flows, and shifts in U.S. interest rates while prioritizing profit-taking and volatility management.
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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