KOSPI Rallies to 6600, Market Cap Hits 6,000 Trillion Won
Daily Market Brief: Essential Updates for Local Stocks|16 min read9.3AI quality score — automatically evaluated based on accuracy, depth, and source quality
The South Korean stock market hit a historic milestone on the 27th, with the KOSPI index surging past 6,600 and the total market capitalization exceeding 6,000 trillion won for the first time. The rally was driven by a historic 18-day winning streak in the U.S. semiconductor index, which pushed SK Hynix and Samsung Electronics sharply higher, alongside booming demand for power equipment fueled by AI.
Korean Market Emergency Briefing — 2026-04-28
Market Snapshot
- KOSPI: 6,716.05 (+1.97%)
- KOSDAQ: 1,226.18 (+22.34pt, +1.86%)
- KRW/USD Exchange Rate: 1,472.5 KRW (down 12.0 KRW from previous day)
- Market Sentiment: Strong momentum led by semiconductors and power equipment; foreign and institutional investors have shifted to net buying; distinct risk-on sentiment following the market cap milestone of 6,000 trillion won.
Trading Trends (KOSPI based)
- Foreigners: Shifted to net buying — concentrated in large-cap semiconductors (SK Hynix, Samsung Electronics) and power equipment.
- Institutions: Shifted to net buying — joined in on semiconductor and power sectors.
- Individuals: Continued net selling — monthly total is roughly 14 trillion won, nearing an all-time record; analysts attribute this to profit-taking.
Top 5 Key News
① KOSPI Breaks 6,600 and Market Cap Tops 6,000 Trillion Won
- What happened?: On the 27th, the KOSPI surged past 6,600 during trading, pushing the combined market cap of the Korean stock market (KOSPI, KOSDAQ, KONEX) above 6,000 trillion won for the first time ever. SK Hynix jumped over 5%, hitting 1,317,000 KRW, while AI/semiconductor demand expectations spilled over into power equipment.
- Market Impact: Broad KOSPI surge, strength in semiconductors and power equipment, clear risk-on sentiment.
② Global Semiconductor Rally — U.S. Index Streak Hits 18 Days
- What happened?: The U.S. semiconductor index extended its historic 18-day winning streak, driving a sharp rise in Samsung Electronics and SK Hynix. BNK Securities downgraded SK Hynix from 'Buy' to 'Hold,' citing potential short-term overheating (RSI).
- Market Impact: Rapid gains in Samsung Electronics and SK Hynix; potential for profit-taking due to overheating warnings.
③ KRW/USD Falls 12.0 Won to Close at 1,472.5
- What happened?: The KRW/USD exchange rate closed at 1,472.5 on the 27th, down 12.0 won from the previous session, driven by expectations of foreign capital inflows and a weaker dollar.
- Market Impact: The stronger won supports foreign net buying and acts as a tailwind for the market.
④ AI Sparks North American Power Demand — Power Equipment "Big 3" Surge
- What happened?: Expectations for increased power demand in North America due to the expansion of AI data centers have driven massive gains in the "Big 3" domestic power equipment stocks, making it a leading theme alongside semiconductors.
- Market Impact: Massive rally in the power equipment sector index and related large-cap stocks.
⑤ Individual Investors Sell 14 Trillion Won This Month
- What happened?: In April, amid the KOSPI recovery, individual investors have offloaded roughly 14 trillion won, nearing an all-time high for monthly net selling. Conversely, foreign and institutional investor sentiment has completely reversed to net buying.
- Market Impact: The market is currently driven by foreign and institutional buying while individuals focus on profit-taking.
Leading Sectors & Themes
- Semiconductors: Following the 18-day U.S. rally; SK Hynix (+5%, 1,317,000 KRW) and Samsung Electronics led gains.
- Power Equipment/AI Infrastructure: Emerged as the "twin engine" of April, driven by AI data center demand.
- Automotive: Hyundai Motor (+2.14%) vs. Kia (-0.52%) showed divergence due to electric vehicle demand uncertainty.
- Pharma/Biotech: Remained weak and largely sidelined during the broader market rally.
Top Gainers & Losers
- Top 3 Gainers: 1. SK Square (+8.83%), 2. SK Hynix (+5%), 3. LG Energy Solution (despite closing -3.53% for the day).
- Top 3 Losers: 1. LG Energy Solution (-3.53%), 2. Kia (-0.52%), 3. Large-cap biotech stocks.
Global Market Links
- U.S. Semiconductor Index: Its historic 18-day rally is the direct trigger for Korean gains, though overheating concerns are rising.
- Dollar/Won: The KRW/USD decline to 1,472.5 is facilitating foreign buying. The Fed's upcoming moves will be the next major factor.
Tomorrow's Checklist
- U.S. FOMC Meeting: The Fed’s interest rate decision is the week's biggest global variable, especially regarding inflation concerns.
- Semiconductor RSI Overheating: Watch for potential profit-taking in SK Hynix and Samsung Electronics.
- KRW/USD Trend: Further weakness in the dollar could signal more foreign inflows, but a hawkish FOMC result could pressure the market.
Investor Action Items
- Monitor early trading liquidity: Observe if the foreign and institutional buying streak continues or hits profit-taking barriers.
- Check technical indicators: Review RSI levels and short-selling interest for semiconductor leaders.
- Prepare for FOMC volatility: Given potential market swings, those holding AI infrastructure stocks should prepare for increased volatility around the event.
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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