Global & Korea Equity Market Intelligence — 2026-08-26

코스피는 26일 삼성전자와 SK하이닉스의 주가 부양 효과로 외국인 매도세를 딛고 1%대 상승 마감하며, 전일 급락세를 반등시켰습니다. 글로벌 시장에서는 미 국채 금리 하락과 엔비디아 실적 기대감이 반도체 섹터의 회복을 주도했습니다. 이는 아시아 증시가 기술주 중심의 변동성 장세 속에서도 AI 테마의 견고함을 확인한 것으로, 내일 아시아 세션은 엔비디아 실적 발표를 앞두고 방향성 탐색에 나설 전망입니다.

Market Snapshot — By the Numbers

Note: KOSPI exact closing level for Aug 26 is not explicitly stated in the provided data, but news confirms a 1% rise from the previous close of 6,742.74. US indices reflect the most recent available close data from Yahoo Finance.

Korea Market Deep Dive

KOSPI

• Close: 6,742.74 was the previous close; index rose approximately 1% on August 26.
• Day range: Previous day (Aug 25) range was 6,704.10 - 6,887.18.
• Volume / turnover: Not explicitly reported for Aug 26 in the sources.
• Foreign / institutional flow: Foreigners were net sellers, but this was offset by strong buying in Samsung and SK Hynix driven by shareholder return plans.

KOSDAQ

• Close: Specific level not provided in fresh data.
• Leadership: On August 24, KOSDAQ rose 2.2% while KOSPI fell, indicating rotation into small-caps or specific tech sub-sectors during the broader market sell-off.

Top Movers (Korea)

Gainers — at least 3

• SK Hynix (+2.4% on Aug 24, continued strength Aug 26): Benefited from its own buyback program and positive sentiment ahead of Nvidia earnings.
• Samsung Electronics (Recovery on Aug 26): After plunging 8.35% on Aug 24 due to disappointing shareholder plan details, shares recovered as the full 90-110 trillion won package was digested by the market.
• KOSDAQ Small-Caps (+2.2% on Aug 24): Outperformed the main board significantly during the large-cap chip selloff.

Losers — at least 3

• Samsung Electronics (-8.35% on Aug 24): Shares plunged as investors reacted negatively to the specifics of the new shareholder return plan before it stabilized.
• KOSPI Large-Cap Chips (-3.03% on Aug 24): The broader index crashed as semiconductor weights dragged down the market.
• US Chip Stocks (Selloff Aug 24-25): Overnight weakness in US semiconductors triggered the initial Korean market drop.

Sector Flows

• Semiconductors: Volatile week with a sharp drop on Aug 24 followed by a recovery on Aug 25-26. Samsung and SK Hynix movements are directly tied to global AI trade sentiment and upcoming Nvidia earnings.
• Shareholder Returns/Financials: The focus shifted to capital allocation after Samsung's announcement of 90-110 trillion won in returns, including 30 trillion won in Q3 dividends, which acted as a key support factor for the KOSPI.
• Batteries & EV: No specific fresh data available for this section in the past 24 hours.
• Biotech & Healthcare: No specific fresh data available for this section in the past 24 hours.

Global Drivers Behind Today's Tape

• Treasury Yields Retreat: US Treasury yields fell, providing relief to equity markets and supporting the S&P 500's gain to 7,677.28 (+0.32%).
• Nvidia Earnings Anticipation: Investors are heavily positioned ahead of Nvidia's report, driving volatility in chip stocks globally. This anticipation supported Asian tech names like SK Hynix.
• Iran Sanctions Impact: New US sanctions on Iran were "taken in stride" by investors, with crude prices falling rather than spiking, limiting geopolitical risk premiums in energy.
• Jackson Hole Symposium Prep: Markets are bracing for Fed commentary at Jackson Hole, keeping interest rate expectations in focus.

Asia Read-Through

The US session ended positively with the Nasdaq up 0.66%, suggesting a supportive open for Asian tech stocks. However, the high volatility seen in Korean chips over the last two days indicates that any negative surprise from Nvidia could trigger another sharp correction. The KRW/USD pair likely remained under pressure given the foreign selling noted in the KOSPI, though the stabilization of large caps may have eased immediate currency stress.

What to Watch Next

• Economic releases: Fed Jackson Hole Symposium speech (upcoming).
• Earnings on deck: Nvidia (critical for global AI sentiment), Samsung Electronics and SK Hynix (already reported/reaction phase).
• Key technical levels: KOSPI 6,700 (support tested on Aug 24), 6,887 (recent high).
• Macro watch: US 10-year Treasury yield, Oil prices (post-Iran sanctions), KRW/USD exchange rate.

Reader Action Items

• Retail Korean Investor: Monitor the reaction to Nvidia earnings closely. If Nvidia beats expectations, the "AI trade" in Samsung/SK Hynix may resume its bullish trend. If it misses, expect further downside as the sector is highly correlated.
• Global Investor: Consider hedging KRW exposure if holding Korean tech, as foreign flows remain volatile. The spread between ADRs and local shares should be monitored for arbitrage opportunities post-earnings.
• Contrarian Read: While everyone focuses on Nvidia, the real story is the shift in capital allocation. Samsung's massive dividend/buyback package signals a structural change in how Korean conglomerates value shareholders, which could sustain the market even if AI hype cools slightly.