KOSPI hits record high, but market polarity grows
The KOSPI has hit a record high for two consecutive days, crossing the 8,200 mark. While strong semiconductor performance is pushing the index up, a sharp polarization is emerging, with 9 out of 10 stocks actually falling.
KOSPI Market Volatility and Key Influencing Factors Report — May 28, 2026
1. KOSPI Market Indicators and Flow Status
On the 28th, the KOSPI surged past the 8,200 mark, setting a record high for the second straight day. Opening at 8,047.77 on the 26th, the index climbed as high as 8,094.90 during trading to set a new 52-week high, led by large-cap semiconductor and electronics stocks.
Over the past 52 weeks, the KOSPI has traded between 2,685.14 and 8,457.09, recording a 198.39% gain over the last 12 months.
In the spot market, an earnings-driven rally centered on semiconductors is leading the index. Large-cap stocks such as Samsung Electronics, SK Hynix, and Samsung Electro-Mechanics are driving the gains, supported by retail buying and program trading. Simultaneously, consistent net buying from foreign and institutional investors is providing a stable supply-demand environment.
2. Key Volatility Factors Today
Continued Semiconductor Earnings Boom The semiconductor-led earnings rally is the primary driver of the KOSPI’s growth. However, a cause for concern is the deepening concentration of the market. Despite the KOSPI hitting record highs, 9 out of 10 stocks have declined, highlighting extreme polarization toward semiconductor names.
Positive Impact of Currency Stability The KRW/USD exchange rate fell 0.30% from the previous trading day to 1,507.91 on the 26th, reflecting a 2.32% weakening over the past month. Currency stability has increased the appeal of export-oriented stocks and improved market sentiment. The rate opened at 1,515.00 on the 26th and has maintained a relatively stable trend.
US Inflation Data and Geopolitical Risks The US April PCE (Personal Consumption Expenditures) price index is scheduled for release on the 28th (US local time), a key indicator that will influence the Federal Reserve’s future interest rate decisions. Additionally, the progress of US-Iran negotiations remains a significant variable for the market.
3. Macro Factors and Economic Indicators
Balance of Interest Rates and Earnings Momentum The core support for the KOSPI’s rise is corporate earnings momentum, which is currently overcoming inflation and interest rate hikes. Improving performance among semiconductor firms is fueling the global stock market uptrend.
Risk Factors Amid Second-Half Bullish Outlook Brokerages project that the KOSPI could potentially surpass the 10,000-point mark by the end of this year. An analyst at Hana Securities stated, "If the index preemptively reflects next year's net profit by year-end, the KOSPI market capitalization could reach 8,499 trillion won."
However, risks such as oil prices, the arrival of Kevin Warsh as the next Chair of the US Federal Reserve, and debates surrounding the AI (Artificial Intelligence) "chasm" are cited as factors that could hinder further growth.
4. Summary and Investor Notes
The KOSPI is showing strong upward momentum, hitting record highs for two consecutive days thanks to strong semiconductor earnings and a stable exchange rate. However, the extreme concentration of market gains—evidenced by the fact that 90% of stocks are declining even as the KOSPI sets new records—is emerging as a market risk. Investors are advised to remain cautious of global headwinds, including the upcoming US inflation data, geopolitical shifts, and the AI chasm debate.
Investor Checkpoints:
- Monitor the release of the US April PCE price index on the 28th.
- Review portfolio diversification strategies to mitigate over-concentration in semiconductors.
- Watch for progress in US-Iran negotiations.
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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