코스피 강세 속 외국인 45조 순매도 위험
KOSPI closed at 8,476.15, up 8.01% for the last week of May, but foreign investors' record net selling of 45 trillion won and declining shares among 82% of listed companies are deepening market polarization. While the US S&P 500 and Nasdaq hit all-time highs and Iran ceasefire extension helped oil prices fall, KOSPI faces liquidity pressure from foreign capital outflows. As June begins, interest rates, oil prices, and record margin levels of 37 trillion won will be critical factors to watch.
Today's Stock Market Strategy: Interest Stock Response Guide — 2026-05-31
Today's Market Snapshot
- KOSPI: 8,476.15 (+290.86p, +3.55% weekly close basis)
- KOSDAQ: Data unconfirmed (detailed rate of change not announced)
- Demand & Supply Trends: Foreign investors net selling 45 trillion won (May cumulative record high), institutional net buying momentum continues
- Key Background: Among 2,764 listed companies, 82.34% recorded monthly declines; capital concentrated in large AI chip stocks (Samsung Electronics, SK Hynix)
- Trading Volume: KOSPI significant scale (exact figures not published)
Global Context — US Market Overnight
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- S&P 500 and Nasdaq Record Close: On May 29 (Friday), all three US major indices hit historic highs, with the S&P 500 achieving 9 consecutive wins. Dell Technologies led the tech rally.
- Oil Price Plunge & Iran Ceasefire: Following reports of a draft US-Iran 60-day ceasefire extension agreement, oil prices tumbled, easing energy inflation concerns. This lowered concerns about Federal Reserve rate hikes intensifying.
- Bond Yields: US 10-year Treasury yield retreated amid oil weakness, deepening safe-haven asset preference.
Leading Sectors & Themes
Priority 1: Semiconductors (AI Chip Polarization)
- Movement: Samsung Electronics and SK Hynix maintain strength, but small and mid-cap semiconductor stocks show broad declines. The two major stocks account for most of KOSPI's gain.
- Leading Stocks: Samsung Electronics, SK Hynix — only these large-cap stocks see profitability improvement scenarios re-evaluated; remaining semiconductors show synchronized weakness.
- Check Point: Nomura projects SK Hynix's HBM (High Bandwidth Memory) average selling price (ASP) per gigabyte will rise from approximately $12.90 in 2026 to $20.90 in 2027. The sustainability of the semiconductor supercycle is a key variable.
Priority 2: Liquidity Crisis from Foreign Investor Massive Exodus
- Movement: Foreign investors net sold 45 trillion won cumulatively in May (record high), reducing overall market trading volume and expanding individual stock volatility.
- Leading Stocks: Broad weakness in small and mid-cap stocks; capital reallocating toward liquid large-cap stocks.
- Check Point: Record-largest foreign investor net selling in Korean stock market history. Additional flight risk exists if rates and dollar strength resume.
Priority 3: Margin & Leverage Risk
- Movement: Record 37 trillion won margin level creates hidden explosive risk within the market.
- Leading Stocks: Risk concentrated in individual investor-heavy holdings (small-caps, thematic stocks).
- Check Point: If rate hike concerns resurface in June or global growth slowdown signals emerge, forced liquidation pressure is possible.
Interest Stock Response Guide
This guide provides reference price levels based on securities firm reports and disclosure data. Investment decisions are your own responsibility.
Samsung Electronics (005930)
- Today's Close / Change %: Specific closing price not published; May-end market leader
- Demand & Supply: Maintains relative strength despite foreign selling pressure through institutional and retail buying support
- Fundamental Trigger: Sustained AI chip demand, HBM price appreciation scenarios re-evaluated, 2024–2027 semiconductor supercycle scenario reconfirmed
- Brokerage Target Price / Support & Resistance: Nomura target price 590,000 won (acknowledges short-term adjustment possibility). Recently formed near upper end of 52-week range. Medium-to-long-term support estimated at 450,000–500,000 won.
- Risk Factors: (1) If foreign capital exodus accelerates, tech stocks decline together (2) If global slowdown signals resurface, AI chip demand could drop sharply.
- Response Scenario: Favorable flow (Iran ceasefire extension, rate cut expectations strengthened) → track upside toward 590,000 won resistance. Unfavorable flow (additional foreign exodus, oil rebound) → essential to observe whether 520,000–550,000 won lower level breaks.
SK Hynix (000660)
- Today's Close / Change %: Specific closing price not published; May profitability improvement leader
- Demand & Supply: Recovery signal in semiconductor sector foreign buying detected; institutional and retail joint buying pressure
- Fundamental Trigger: HBM ASP appreciation forecast (2026: $12.90 → 2027: $20.90). Memory chip price stabilization and high-value product mix improvement entering full phase.
- Brokerage Target Price / Support & Resistance: Nomura target price 4 million won (prior report). Converging near current price level. Recent 52-week range: high around 3.8 million won, low reference around 2.8 million won.
- Risk Factors: (1) If memory chip oversupply recurs, downward price pressure (2) China's semiconductor self-sufficiency expansion intensifies global competition.
- Response Scenario: Favorable flow (HBM demand sustained, price locked in) → reconfirm 4 million won target price. Unfavorable flow (oversupply concerns) → if 3.5–3.6 million won resistance breaks, prepare for additional declines.
Other Small & Mid-Cap Semiconductors & Battery Stocks
- Today's Close / Change %: Broad declines (May cumulative -5% to -15% range, individual variation)
- Demand & Supply: Foreign net selling spike and liquidity shortage intensify weakness.
- Fundamental Trigger: Individual company earnings improvements buried under broad tech stock adjustment trend.
- Brokerage Target Price / Support & Resistance: Sparse published targets for individual small-caps. Recent 52-week range for each stock essential reference. Typical lower support: near annual low (January–March).
- Risk Factors: (1) If foreign outflow prolongs, liquidity weakens → selling resumes (2) If retail margin liquidation accelerates, synchronized declines occur.
- Response Scenario: Favorable flow (foreign buying recovery) → track after quarterly low breakout. Unfavorable flow (liquidity deterioration) → observe double-bottom formation below quarterly lowest point.
Must-Watch Events Tomorrow
- June 1 (Saturday): US Labor Statistics Non-Farm Payroll (scheduled) — rate path re-evaluation variable
- June 2–3 (Sunday–Monday): Bank of Korea base rate decision (scheduled timing) — domestic rate direction determination
- Early June: FOMC Minutes expected to be released — benchmark for assessing US rate hike intensification
- Late May–Early June: Semiconductor company quarterly earnings conference calls (individual schedules pending) — forward guidance update confirmation
One-Line Strategy Memo
Despite KOSPI's large-cap AI chip strength, foreign net selling of 45 trillion won and broad 82% declines signal a "strong index, weak market" warning. As June opens, global rate trajectory (FOMC, 10Y yield), oil prices (Iran ceasefire sustainability), Bank of Korea policy signals, and record 37 trillion won margin levels all converge. In this polarization-deepening environment, dual monitoring of "support hold vs. resistance breakout" in semiconductor leaders (Samsung Electronics 520,000–590,000 won, SK Hynix 3.5–4.0 million won) and deteriorating small-cap liquidity trends is essential. Prepare downside scenario contingencies if foreign exit signals intensify.
Glossary & References
- Demand & Supply: Net buying/selling flow from foreign investors, institutions, and retail
- Box Range: High and low prices over the recent 52 weeks or recent quarter forming a price band
- Support/Resistance: Actual levels observed in securities firm reports and chart analysis
- HBM: High Bandwidth Memory, high-value-add memory product in AI chips
- ASP: Average Selling Price per unit of product
This material is a market brief synthesizing publicly available news, disclosures, and securities firm reports. It does not constitute investment recommendation or earnings guarantee; all trading decisions and results rest with the investor.
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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