[2026-06-05] KOSPI & KOSDAQ Market Close | Black Friday Crash as Broadcom Shock Sinks Korean Semiconductors

📊 Today's Market at a Glance

On Friday, June 5, 2026, Korean equities staged a true "Black Friday," as the Broadcom-led sell-off in U.S. semiconductors slammed Korea's large-cap chip names. Both the KOSPI and KOSDAQ plunged in tandem, sliding to the brink of breaking key psychological support levels.

Index	Open	High	Low	Close	Change	Volume
KOSPI	8,323.20	8,382.16	8,038.10	8,160.59	-5.54%	44,637.3만
KOSDAQ	1,035.22	1,035.22	992.80	1,002.44	-4.50%	71,650.1만

The KOSPI tumbled 478.82 points (-5.54%) from the prior session (8,639.41), while the KOSDAQ fell 47.29 points (-4.50%) from its previous close (1,049.73). The won weakened sharply, with USD/KRW breaching the 1,530 mark to close at 1,530.11 — amplifying fears of foreign capital outflows.

Indicator	Close
USD/KRW	1,530.11

📈 KOSPI Analysis

The KOSPI opened down 3.66% at 8,323.20 and extended losses intraday to as low as 8,038, deepening the decline. Trading volume surged to roughly 446 million shares (44,637.3만), reflecting a wave of panic-driven, capitulation-style selling. The direct trigger was relentless foreign selling: after foreigners posted their second-largest net sell on record in the previous session, the Broadcom-driven weakness in U.S. chip stocks pushed offshore investors to keep dumping shares.

SK Hynix- and Samsung Electronics-linked leverage ETNs collapsed by more than 20% across the board, while the related inverse 2X products soared — a structure in which the simultaneous slide in large-cap semiconductors dragged the entire index lower. That said, defensive and value plays such as banks (+3.94%), tobacco, and utilities advanced, showing that some capital rotated into safer havens.

📉 KOSDAQ Analysis

The KOSDAQ closed at 1,002.44, down 47.29 points (-4.50%) from the prior session (1,049.73), barely holding the 1,000 line. After rebounding the previous day for the first time in six sessions, it crumbled again within a day, leaving its psychological support under threat.

Semiconductor equipment and materials names — Jusung Engineering (around -16%), SemiFive, Exicon — along with network gear makers such as HFR and KMW topped the losers' board, mirroring the KOSPI as chip weakness pressured the index. On the other hand, individual momentum names like Alt, Pintel, Hankum, and i-Robotics hit their upper price limits, and pharma/bio plays such as Pharos iBio rallied, showing that small- and mid-cap themes saw selective rotation even amid the broad collapse.

🔥 Key Themes & Sectors

① Semiconductors (Broadcom Shock) ▼ Down

Broadcom-led weakness in U.S. chip stocks sent SK Hynix and Samsung leverage ETNs plunging more than 20%, while materials/parts/equipment names such as Jusung Engineering, Exicon, and SemiFive sold off in tandem. Concentrated foreign selling made this the core driver of the index's plunge.

② Banks/Financials & Defensives ▲ Up

The banking sector rose +3.94% and other financials gained +1.06%, as capital rotated into value and defensive plays amid the panic. Tobacco (+1.99%) and multi-utilities (+0.89%) also strengthened together.

③ Pharma & Bio ▲ Up

Buoyed by a surge in U.S. pharma/bio names, Daewon Pharmaceutical hit the upper limit and domestic drug stocks including Pharos iBio (around +24%) rose together, emerging as an alternative sector for capital fleeing semiconductors.

④ Inverse / Double-Inverse ETNs & ETFs ▲ Up

As chips and the broader index plunged, inverse products — SK Hynix and Samsung futures inverse 2X, KOSPI 200 futures inverse 2X and others — jumped across the board, reflecting a surge in demand for downside bets.

💰 Foreign & Institutional Flow

Investor-by-investor trading figures were not compiled for the session, making precise net amounts unavailable. However, according to news reports, foreigners recorded their second-largest net sell on record in the prior session, and on this day Broadcom-shock selling resumed from the open, dragging the KOSPI below the 8,200 line. The streak of 19 consecutive sessions of foreign net selling, combined with USD/KRW breaching 1,530, appears to have created a vicious cycle in supply and demand.

🌍 Global Factors

Index	Close	Change
Dow Jones	51,561.93	+1.73%
S&P 500	7,584.31	+0.41%
Nasdaq	26,830.96	-0.09%

Overnight, the Dow and S&P 500 held firm, but the Nasdaq slipped -0.09%. In particular, the sharp drop in semiconductor names such as Broadcom landed a direct blow on Korea's large-cap chipmakers. USD/KRW broke above 1,530 to 1,530.11, fueling foreign capital outflows. The U.S. jobs report, due at 21:30 KST tonight, stands as the key variable for the next session's volatility.

🏆 Notable Stocks

• Daewon Pharmaceutical (Limit-up, +29.9%) — Hit the upper limit on the U.S. pharma/bio rally; a flagship alternative for capital rotating out of chips.
• Pharos iBio (+24.1%) — Surged amid pharma/bio strength, highlighting small/mid-cap bio rotation.
• Hankum (Limit-up, +29.9%) — Hit the upper limit on individual KOSDAQ momentum; a differentiated gainer amid the index collapse.
• Jusung Engineering (-16.2%) — A bellwether chip-equipment name; plunged on the Broadcom shock and led the KOSDAQ lower.
• KODEX SK Hynix Single-Stock Leverage (-20.3%) — The leverage product cratered on SK Hynix's drop, starkly reflecting the intensity of the semiconductor capitulation.

📋 Special Stock Status

• Limit-up: 5 stocks — Daewon Pharmaceutical (KOSPI), Alt, Pintel, Hankum, i-Robotics
• Limit-down: None (0)
• Trading halt: 20 stocks — Indf, Mason Capital, TS Investment, Pangsky, Dynamic Solution, CNR Research, Bident, Telcon RF Pharmaceutical, Korea BTB, KPM Tech, Pion-X, Crystal New Material, Hands Corporation, Organic TCosmetic, Ewha Engineering & Construction, Plask, TS NextGen, Orient Bio, Deep Commerce, EOFlow
• Audit report delay: None

📅 Today's Economic Events Results

🌐 Global Indicators (High Impact)

Time (KST)	Country	Event	Forecast	Previous	Actual
00:40	UK	BOE Gov Bailey Speaks	-	-	TBD
21:30	Canada	Employment Change	10.6K	-17.7K	TBD
21:30	Canada	Unemployment Rate	6.9%	6.9%	TBD
21:30	U.S.	Average Hourly Earnings m/m	0.3%	0.2%	TBD
21:30	U.S.	Non-Farm Employment Change	85K	115K	TBD
21:30	U.S.	Unemployment Rate	4.3%	4.3%	TBD

Note: The U.S. jobs report (non-farm payrolls, unemployment rate, average hourly earnings) is scheduled for 21:30 KST tonight, so actual results were not yet available as of the market close. A significant deviation from forecasts could directly affect the Fed's rate path and next-session volatility.

🇰🇷 Domestic Schedule

No major DART disclosures or key domestic news items were separately compiled for today.

🔮 Next Session Outlook

With Memorial Day on Saturday, June 6, and the weekend closure, the next trading day is Monday, June 8. Direction will hinge on tonight's U.S. jobs report and the trajectory of U.S. semiconductor stocks over the weekend. The KOSPI's 8,000 line and the KOSDAQ's 1,000 line stand as the critical support levels, with any easing of foreign net selling being the key to a rebound.

With the potential for a technical bounce after entering short-term oversold territory coexisting with the downward pressure of continued semiconductor weakness, a stock-pickers' market centered on defensives and bio names may persist until clear signs of stabilization emerge in large-cap chips.

⚠️ Investment Disclaimer

Key risks to watch: ① whether Broadcom-led weakness in U.S. chip stocks persists; ② accelerating capital outflows from 19 straight sessions of foreign net selling and USD/KRW above 1,530; ③ uncertainty over the Fed's rate path depending on tonight's U.S. jobs report; ④ the possibility of further capitulation if the KOSPI 8,000 and KOSDAQ 1,000 psychological supports break; and ⑤ individual credit/financial risks among the 20 halted stocks.

Disclaimer: This post is for informational purposes only and does not constitute investment advice. All investment decisions are the sole responsibility of the investor. Past performance does not guarantee future results.

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