KOSPI Index · KOSDAQ Index
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Market Overview: Semiconductors Propel KOSPI Toward 6,000 Milestone
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The South Korean stock market witnessed a historic KOSPI closing rally on Wednesday, March 18, 2026, as the benchmark index soared to 5,925.03, a staggering gain of 284.55 points (5.04%). This monumental surge was driven by a vertical rally in the semiconductor sector, with SK Hynix firmly establishing itself as a “million-won” blue-chip stock.
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Meanwhile, the KOSDAQ index also performed strongly, closing at 1,164.38, up 27.44 points (2.41%). The day was marked by unprecedented buying pressure from foreign and institutional investors, buoyed by the global AI boom and the successful implementation of “Value-Up” corporate reforms.
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Key Market Drivers: Institutional Buying and AI Dominance
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Foreign investors remained aggressive net buyers, while institutional flows also accelerated. The optimism was largely centered around the semiconductor supply chain, as Samsung Electronics and SK Hynix continued to benefit from the massive expansion of the HBM4 market.
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Top Movers and Sector Performance (KRX Official Close)
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| Stock Name | Ticker Code | Closing Price (KRW) | Market Performance |
|---|---|---|---|
| Samsung Electronics | 005930 | 207,500 | Strong Surge |
| SK hynix | 000660 | 1,056,000 | Empress Stock Status |
| LG Energy Solution | 373220 | 418,000 | Strong Rebound |
| Hyundai Motor | 005380 | 261,000 | Upward Trend |
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Data Source: KRX (Korea Exchange)
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Disclaimer: This article is for informational purposes only and does not constitute financial advice.