Global & Korea Equity Market Intelligence — 2026-05-22

Market Snapshot — By the Numbers

Korea Market Deep Dive

KOSPI

• Close: 7,847.71 (+0.41%, +32.12 pt)
• Intraday range: 7,780.13 – 7,886.64
• 52-week range: 2,589.51 – 8,046.78
• Market context: Following May 21's single-day surge of over 600 points to 7,815.59 (+8.42%), May 22 saw a modest continuation of the rally. Samsung Electronics' labor agreement and improving semiconductor outlook were the main drivers.

KOSDAQ

• Close: Detailed data unavailable for this report as of May 22. As of May 21, trading occurred around the 1,100 level following a buy-side circuit breaker trigger, with semiconductors and biotech dominating volume.

Top Movers (Korea)

Gainers — Major Stocks

• Samsung Electronics (005930) (+Up): Labor union wage agreement finalized and AI memory supercycle expectations drove historic rally on May 21. Korea Investment Securities set a target price of 570,000 KRW.
• SK Hynix (000660) (+Up): Nomura raised its target price to 4,000,000 KRW. Surging HBM demand from AI applications triggered valuation re-rating.
• Samsung Securities client buy concentration (+Up): As of May 21, approximately 24–25% of Samsung Electronics and SK Hynix shareholders aggressively added positions near all-time highs. RIA account balances broke through 1.94 trillion KRW.

Decliners — Major Stocks

• Continuous foreign net selling (KOSPI-wide) (−Down): Foreign investors maintained at least 9 consecutive trading days of net selling through May 20, applying profit-taking pressure on semiconductors.
• U.S. mega-cap tech ETF-linked stocks (−Down): Korean investors pivoted from U.S. tech and leveraged ETF positions into Samsung Electronics and SK Hynix, creating relative weakness in linked domestic products.
• May 20 decline-related stocks (−Adjustment): May 20 saw foreign investor exodus push KOSPI to 7,000 levels early session, with semiconductors experiencing profit-taking sales.

Sector Flows

• Semiconductors: Samsung Electronics (005930) and SK Hynix (000660) led KOSPI's May 21 surge. Samsung's catalyst: labor agreement resolution plus strong AI memory demand; SK Hynix: HBM boom. Nomura raised its 2025 KOSPI target to 10,000–11,000, setting Samsung Electronics at 590,000 KRW and SK Hynix at 4,000,000 KRW, declaring an "AI-driven memory supercycle."

• Battery & EV: No recent data available for this report period (post-May 20)—no new sector catalysts confirmed.

• Biotech & Healthcare: No major biotech momentum data confirmed for this report period.

• Retail investor rotation: Korean investors exited U.S. mega-cap tech and leveraged ETF positions to concentrate in Samsung Electronics and SK Hynix. RIA account balances reached 1.94 trillion KRW, with 24–25% of Samsung Securities clients adding positions near all-time highs.

Global Drivers Behind Today's Tape

• Nvidia earnings surprise: Nvidia reported results after market close on May 20, beating both revenue and profit expectations. Stock dipped in after-hours trading post-release. Strong AI chip demand confirmation provided tailwind to Korean semiconductor names.
• U.S.-Iran nuclear talks expectations → oil plunge: Reports of imminent U.S.-Iran negotiation agreement drove May 20 oil prices sharply lower and bond yields down—supportive for equities, sparking a 650-point Dow surge. Geopolitical tension relief expectations extended into May 21.
• U.S. Treasury yield trends: May 19 saw 10-year yields hit 1-year highs, dragging S&P 500 and Nasdaq down 3 straight sessions; May 20–21 saw yields ease alongside oil declines, driving equity rebound.
• Dow hits new high: May 21 saw Dow Jones close at 50,285.66, a new record. Solid economic data and AI rally underpinned resilience amid oil and rate volatility.
• Nikkei 225 sharp rebound (+2.68%): May 22 Nikkei closed at 63,339.07, up 1,654.93 points in a single session. Taiwan's weighted index also rallied +2.17%, reconfirming Asia's semiconductor rally.

Asia Read-Through

May 22's Asia session saw Nikkei 225 surge +2.68%, Hang Seng rise +0.90%, and Taiwan's weighted index climb +2.17%, spreading semiconductor strength across the region. With U.S. Dow at record highs and oil/rate volatility moderating, risk-on sentiment revived; dollar index (DXY) held steady at 99.26. Korea's next session hinges on foreign investor selling flow reversal, Nvidia earnings follow-through, and Samsung Electronics labor agreement momentum sustainability.

What to Watch Next

• Economic data: U.S. weekly jobless claims (due May 22), Bank of Korea policy meeting schedule, and Korean CPI monitoring.
• Earnings focus: Nvidia earnings reverberations continue / Korea's major semiconductor and battery firms' 2Q guidance and business conference calls.
• Key technical levels: KOSPI 7,800 support hold (vs. 8,000 retest attempts), 7,500 as near-term support zone. Watch for demand-supply inflection after 9+ consecutive days of foreign selling.
• Macro watch: KRW/USD rate moves, U.S. 10-year Treasury yield, WTI crude (U.S.-Iran negotiation progress), HBM spot pricing trends.

Reader Action Items

• Korean retail investors: 24–25% of Samsung Electronics and SK Hynix shareholders are showing strong conviction, adding near all-time highs. However, 9+ consecutive days of foreign net selling is a short-term volatility warning. Plan partial profit-taking and rebalancing above 8,000, but AI memory supercycle theme remains valid on a medium-term view.

• Global Korea exposure investors: Hedge costs for KRW and directional KRW/USD positioning need review. With dollar index at 99.26 parity, foreign outflows risking won weakness could widen ADR (KB Financial, POSCO, etc.) vs. local stock spreads. Taiwan weighted index correlation (+2.17%) monitoring is essential.

• Contrarian take: Foreign selling for 9+ days while KOSPI closed +0.41% signals domestic demand (retail + institutional) absorption strength. Market consensus reads "foreign return = more upside," but reality shows retail and institutions already digesting foreign flows entirely—meaning foreign re-entry's upside runway may be tighter than consensus expects.