코스피 사상 첫 6,400 터치…2차전지 반도체 대체 주도
Daily Market Brief: Essential Updates for Local Stocks|19 min read9.3AI quality score — automatically evaluated based on accuracy, depth, and source quality
The Kospi touched a historic 6,400 for the first time during intraday trading on April 22 before sliding back to the 6,380 range as foreign investors and institutions took profits. Secondary battery stocks emerged as the new short-term leaders replacing semiconductors, with LG Energy Solution and Samsung SDI showing strength from pre-market trading. The previous day (April 21), the Kospi surged past its previous record high of 6,307 on combined foreign investor and institutional buying, closing at an all-time high of 6,388.47.
Korea Stock Market Emergency Briefing — April 22, 2026
Market Snapshot
- Kospi: Touched intraday record 6,401.97, then consolidated around 6,380 range (compared to previous close of 6,388.47)
- Kosdaq: Approaching 1,200 breakthrough; semiconductor supply chain and secondary battery strength continues
- KRW/USD exchange rate: 1,477.2 won (down 6.3 won from previous day; as of April 20 close)
- Market sentiment: Post-record-high profit-taking mixed with sector rotation; funds shifting to secondary batteries with LG Energy Solution +4.39% surging from pre-market
Supply & Demand Trends (Securities Market)
- Foreign investors: Switched to net buying on April 21 (combined with institutions) → Reversed to net selling on April 22 morning — main profit-taking in semiconductor giants like Samsung Electronics and SK Hynix
- Institutions: Combined net buying on April 21 → Switched to net selling April 22 — offered profit-taking stock after reaching 6,400 level
- Retail investors: Maintained buying stance on April 22 — centered on low-priced buying of secondary battery and biotech stocks with outsized declines
Top 5 Key News of the Day
Kospi touches 6,400 for first time in history, then reverses
- What happened: On April 22, Kospi opened down 0.01% at 6,387.57 from the previous close (6,388.47), then surged to 6,401.97 in early trading—achieving the historic first breach of the 6,400 line. However, foreign investors and institutions simultaneously switched to selling, pushing the index back toward the 6,380 range.
- Market impact: Kospi shifts to consolidation-to-slight decline; semiconductor giants Samsung Electronics and SK Hynix face short-term profit-taking pressure
Semiconductors pause, secondary batteries explode…LG Energy Solution +4.39% in pre-market
- What happened: On the 22nd, secondary battery stocks surged in pre-market (next-trade) trading with LG Energy Solution jumping 4.39%. Following SK Hynix's breakthrough past 1.2 million won the previous day (the "1.2M Hynix" milestone) to lead the semiconductor rally, sector rotation on the 22nd quickly shifted capital toward battery stocks. SK Hynix consolidated, Samsung Electronics fell 0.91%, as semiconductors entered a consolidation phase.
- Market impact: Battery sector giants LG Energy Solution and Samsung SDI lead gains; semiconductor supply chain takes a breather
Kospi closes April 21 at all-time high 6,388.47
- What happened: On the 21st, Kospi surged 169.38 points (+2.72%) to close at 6,388.47, breaking through the previous closing record high of 6,307.27 set on February 26 for the first time in roughly two months. With foreign investors and institutions stepping in with combined net buying and SK Hynix achieving the 1.2 million won milestone to drive semiconductor-led rally, semiconductor earnings expectations overwhelmed geopolitical risk amid U.S.-Iran ceasefire uncertainty.
- Market impact: Kospi posts new record high since February; semiconductors (SK Hynix, Samsung Electronics) and DB HiTek lead
KRW/USD exchange rate falls 6.3 won to 1,477.2…strengthens
- What happened: On April 20, the KRW/USD exchange rate closed down 6.3 won at 1,477.2 from the previous trading day. Despite lingering geopolitical tension ahead of the two-week ceasefire deadline agreed between the U.S. and Iran, the won strengthened alongside stock market strength.
- Market impact: Currency stability serves as catalyst for foreign investor return; short-term headwind for export stocks
DB HiTek achieves historic record high…semiconductors, secondary batteries, security stocks rally as "big three"
- What happened: On April 20, DB HiTek surged 17.4% during the session to post a historic record high of 128,400 won. On the same day, semiconductors, secondary batteries, and security stocks (cybersecurity-related equities) simultaneously showed strength, leading the Kospi rally. Securities analysts put forward strong views stating "Kospi heading to 8,000."
- Market impact: DB HiTek hits record high; semiconductor supply chain, fabless, and security stocks rally broadly
Dominant Sectors & Themes
Secondary Batteries
- Trend: On the 22nd as semiconductors entered consolidation, rapid sector rotation toward secondary batteries. Led by LG Energy Solution +4.39% in pre-market, battery stocks show broad strength. Kosdaq secondary battery stocks advance in tandem.
- Key stocks: LG Energy Solution (pre-market +4.39%), Samsung SDI (strong), Kosdaq secondary battery material stocks
Semiconductors (Memory, Foundry, Supply Chain)
- Trend: SK Hynix broke through 1.2 million won, DB HiTek posted historic record high (+17.4%) on the 21st, driving strong leadership the previous day. On the 22nd, taking profits amid consolidation. Foreign investors maintained semiconductor net buying stance through the month before switching to profit-taking on the 22nd.
- Key stocks: SK Hynix (broke 1.2M won on 21st, consolidating on 22nd), Samsung Electronics (down 0.91% on 22nd), DB HiTek (up 17.4% on 21st)
Security Stocks (Cybersecurity)
- Trend: Emerged as "big three" theme alongside semiconductors and secondary batteries on April 20. Reflects rising cybersecurity demand expectations amid expanding geopolitical risk backdrop.
- Key stocks: Security-related equities broadly strong (consult daily trading volume charts for specific stock names)
Biggest Gainers & Losers
Top 3 Gainers
- DB HiTek — +17.4% (April 20) — Historic record high achieved, reflects semiconductor foundry outlook optimism
- LG Energy Solution — Pre-market +4.39% (April 22) — Sector rotation from semiconductors to secondary batteries
- SK Hynix — Broke 1.2 million won during April 21 session ("1.2M Hynix" milestone) — AI memory demand and earnings expectations
Top 3 Losers
- Samsung Electronics — Down 0.91% (April 22 pre-market) — Profit-taking from SK Hynix strength and relative underperformance amid sector rotation
- Kosdaq IT Services — Down 1.00% — Per Korea Economic Daily market composite, sector index decline
- Kosdaq General Services — Down 2.98% — Per Korea Economic Daily market composite, weakness amid battery and semiconductor sector rotation exclusion
Overseas Market Connection Points
U.S.-Iran Second Talks Caution: Nasdaq –0.26% amid U.S. stock weakness On April 21 (New York time), U.S. stocks fell modestly as caution ahead of second U.S.-Iran talks mixed with profit-taking. Nasdaq fell 0.26% and major European markets closed lower. However, domestic markets on the 22nd extended gains backed by secondary battery surge.
KRW/USD stable around 1,477: Foreign investor catalyst Won strength (falling exchange rate) facilitated foreign investor return to domestic stocks. Foreign investors maintained semiconductor-focused net buying through the month, and as the rate stabilized below 1,480 won, risk-on sentiment strengthened. However, they switched to profit-taking on the 22nd following the 6,400 level breakthrough.
Tomorrow's Checkpoints
- U.S.-Iran second talks outcome: With two-week ceasefire deadline approaching, confirm whether geopolitical risk re-escalates based on talks result — directly impacts crude oil, exchange rate, and foreign investor flows
- Sustainability of secondary battery rally: Monitor battery sector giants LG Energy Solution and Samsung SDI session-close supply/demand and foreign investor net buying reversal — critical juncture to determine if sector rotation from semiconductors to secondary batteries is one-off or sustained trend
- Kospi 6,400 line establishment: After historic first touch, confirm whether foreign investors and institutions absorb profit-taking stock and whether Kospi achieves closing breakthrough of 6,400 — possibility rises if Samsung Electronics and SK Hynix institutions resume net buying
Investor Action Items
- Check secondary battery supply/demand early session: Monitor LG Energy Solution and Samsung SDI for combined foreign investor and institutional buying within first 30 minutes of opening — key signal for sector rotation sustainability
- Check semiconductor overshooting: If Samsung Electronics and SK Hynix show declines exceeding –1% from prior day, consider entry timing from low-price buying perspective; confirm foreign investor net buying resumption
- Real-time monitoring of U.S.-Iran talks news: High likelihood of sharp intraday moves based on talks outcome, so set geopolitical news alerts and prepare checklist for responding to Kospi futures and exchange rate linked volatility
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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