Stock Market Recap - Oct 20, 2026

Key Findings

• Kospi Hits All-Time High: On October 19, the Kospi index broke through the 4,000 mark during trading to set a record high, while the Kosdaq recovered the 900 level for the first time in a decade.
• Semiconductor Supercycle Expectations: Surging demand for chips fueled by the global AI boom is driving large-cap semiconductor stocks like Samsung Electronics and SK Hynix to lead the index higher.
• Policy and External Variables: The government's capital market boost policies and expectations of Fed rate cuts are supplying liquidity to the domestic stock market and improving investor sentiment.

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Details

Semiconductor-Driven Index Gains The recent rally in the domestic stock market stems from strong momentum in the semiconductor sector. Expectations of exploding demand for AI chips have pushed Samsung Electronics and SK Hynix to break new highs, serving as the core engine behind Kospi's push past the 4,000 milestone. As earnings outlooks for major semiconductor stocks continue to brighten, net buying by foreign investors in related shares remains steady.

Policy Support and Liquidity Expansion The government's capital market revitalization policies, including the ongoing value-up program, are encouraging companies to expand shareholder returns, boosting investment appeal. Additionally, growing possibilities of a Federal Reserve rate shift are causing global capital to flow into emerging market equities. These changes in the external environment are helping stabilize the won-dollar exchange rate and easing valuation pressures on the domestic stock market.

Investor Cautions Some experts point out that risks of heightened volatility remain, such as potential profit-taking following the rapid surge in the index and lingering concerns over a global economic slowdown. Particularly since short-term overheating signals have been detected, analysts advise managing risks through staged purchases rather than aggressive chase buying.

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Sources