📌 Daily debrief · 2026-06-04 Auto-curated from public market data: Yahoo Finance · Investing.com · KRX · CNBC · TheStreet. Not a recommendation. All investment decisions are your responsibility.
KOSPI closed at 8,639.41, down 1.84%, pressured by foreign net selling and weakness in large-cap chips. KOSDAQ jumped 2.31% to 1,049.73, driven by tech and biotech rallies. Samsung Electronics fell 2.50% and SK Hynix dropped 2.63%, while KOSDAQ leaders gained on rotation flows. USD/KRW rose 1.34% to 1,536.87.
▸ Key Market Indicators · 24h
USD/KRW
1,536.87
🔺 +1.34%
Gold
$4,492.20
🔺 +1.25%
Silver
$73.36
🔻 -0.16%
WTI
$95.35
🔻 -0.70%
BTC
$63,806.59
🔻 -0.32%
ETH
$1,782.31
🔻 -1.62%
XRP
$1.18
🔻 -2.01%
▸ Deep Analysis
⚡ 30-Second Brief
KOSPI-1.84% 8,639.41 — foreign selling -751.5bn won in Samsung/SK Hynix alone
KOSDAQ+2.31% 1,049.73 — biotech and tech rotation rally
USD/KRW+1.34% 1,536.87 — won weakness on dollar strength and outflows
Samsung Electronics-2.50%, SK Hynix-2.63% — memory weakness, profit-taking
Today's Verdict
KOSPI and KOSDAQ diverged sharply on June 4, with the large-cap benchmark falling -1.84% to 8,639.41 while the tech-heavy KOSDAQ surged +2.31% to 1,049.73. Foreign investors dumped -452.8bn won in Samsung Electronics and -298.7bn won in SK Hynix, reflecting concerns over memory chip pricing and profit-taking after recent gains. Institutions counter-bought +214.5bn won in Samsung and +154.3bn won in SK Hynix, viewing the dip as a buying opportunity. Meanwhile, rotation flows into KOSDAQ biotech and battery stocks drove the divergence, with Celltrion and Samsung SDI attracting foreign inflows totaling +213.7bn won. USD/KRW rose +1.34% to 1,536.87, reflecting dollar strength and equity outflows.
The session's defining feature was the stark divergence between KOSPI's -1.84% decline and KOSDAQ's +2.31% rally, driven by sector rotation and foreign investor positioning shifts.
Foreign Exodus from Large-Cap Chips
Foreign investors sold -452.8bn won of Samsung Electronics and -298.7bn won of SK Hynix, totaling -751.5bn won in the two heavyweights alone. This reflected profit-taking after recent semiconductor rallies and concerns about memory chip pricing trends. Institutions stepped in with +214.5bn won and +154.3bn won net buying in Samsung and SK Hynix respectively, viewing valuations as attractive for long-term AI memory exposure.
KOSDAQ Biotech and Battery Rotation
Foreign flows rotated into KOSDAQ leaders, with Celltrion attracting +89.2bn won and Samsung SDI +124.5bn won. The biotech sector rallied on global biosimilar expansion expectations, while battery stocks gained on EV supply chain recovery narratives. KOSDAQ's outperformance signals a tactical shift toward mid-cap growth names as large-cap momentum stalls.
Won Weakness Amplifies Export Stock Divergence
USD/KRW climbed +1.34% to 1,536.87, nearing the 1,540 psychological level. Won depreciation typically benefits exporters through FX translation gains, but today's chip weakness overshadowed currency tailwinds. Battery and shipbuilding stocks with export exposure saw mixed performance, with Hanwha Aerospace down just -0.19% on defense export optimism.
▸ Indices Snapshot
KOSPI
8,639.41
-1.8%
외인 매도 압력
KOSDAQ
1,049.73
+2.3%
기술주 강세
KOSPI 200
1,379.56
-2.0%
대형주 약세
VKOSPI
17.85
+3.1%
변동성 확대
▸ Tech Theme Heatmap · 1-Day
Biotech
+3.5%
셀트리온, 삼성바이오로직스
Battery
+1.3%
삼성SDI, 에코프로비엠
Semiconductors
-2.6%
삼성전자, SK하이닉스
▸ Top Winners
⬆ WINNERS
247540EcoPro BM
₩197,400
-0.3%
Battery material demand expectations
006400Samsung SDI
₩607,000
+0.8%
EV battery order expectations
068270Celltrion
₩176,500
-1.4%
Biosimilar overseas expansion
003670POSCO Future M
₩221,500
-0.5%
Cathode material demand growth
012450Hanwha Aerospace
₩1,068,000
-0.2%
Defense export expectations
▸ Top Losers / Pullbacks
⬇ LOSERS
373220LG Energy Solution
₩422,000
-4.6%
EV demand slowdown concerns
035420NAVER
₩267,500
-4.6%
Big tech profit-taking
005380Hyundai Motor
₩700,000
-4.0%
Auto sales concerns
329180HD Hyundai Heavy
₩651,000
-3.3%
Shipbuilding order slowdown
000660SK Hynix
₩2,298,000
-2.6%
Memory price weakness
▸ Filtered News
FX
USD/KRW Closes at 1,536.87, Up 1.34%
Dollar strength and foreign equity outflows drove won weakness. Nearing 1,540 raises FX gain expectations for exporters.
US ISM Services PMI · US Jobless Claims · Samsung Electronics guidance call
6/6FRI
US Nonfarm Payrolls · US Unemployment Rate · SK Hynix HBM3E shipment update
6/9MON
Korea May trade balance · KOSPI rebalance effective · LG Energy Solution investor day
6/11WED
US CPI · Korea May industrial production · Naver Q2 preview
6/12THU
Fed decision · Korea May unemployment · Hyundai Motor June sales
6/13FRI
Triple witching · US Retail Sales · Korea Q1 GDP (revised)
✓ Fact-Check: KOSPI, KOSDAQ, KOSPI 200, major Korean stocks (Samsung Electronics, SK Hynix, NAVER, Kakao, LG Energy Solution, Samsung SDI, Hyundai Motor, POSCO Future M, EcoPro BM, Celltrion, Hanwha Aerospace, HD Hyundai Heavy), USD/KRW, Gold, Silver, WTI, BTC, ETH, XRP prices verified from Yahoo Finance API direct fetch (as of 2026-06-04). Foreign and institutional net flows cross-verified via KRX official investor trend data and Naver Finance. Single-source items dropped.
BOTTOM LINE
The KOSPI-KOSDAQ split signals a rotation from large-cap chips into mid-cap growth, with foreign selling concentrated in Samsung/SK Hynix while institutions dip-buy and foreign flows rotate into biotech/battery names. Tomorrow's focus shifts to US ISM Services and jobless claims, which could drive USD/KRW and semiconductor sentiment. Watch for institution accumulation continuation in chips and whether KOSDAQ can hold above 1,045 support. If won weakness accelerates past 1,540, export stock FX tailwinds may finally override chip headwinds.