Korea Market Close: KOSPI Slips 0.60% as Hynix Falls

KOREA MARKET CLOSE

Foreign cash and program selling plus SK hynix weakness weighed on the KOSPI, while batteries and a firmer won cushioned the decline.

Report cut-offAug. 7, 2026 20:20 KST Korean equities and USD/KRW15:30 KST close Overseas marketsChecked 20:20 KST

1. Closing view

Neutral

Foreign cash and non-arbitrage program selling, together with a sharp drop in SK hynix, weighed on capitalization-weighted indexes, but positive KOSPI breadth, battery strength and a firmer won made this a volatile mixed session rather than broad risk-off. Foreign buying of KOSPI 200 futures also ran against foreign cash selling.

2. Key takeaways

The KOSPI closed at 6,258.77 (-0.60%) and the KOSDAQ at 798.81 (-0.36%) on Aug. 7.
The KOSPI 200 fell 0.83%, while September KOSPI 200 futures lost only 0.24%, a smaller decline than the cash large-cap index.
KRX-supplied Npay closing data showed foreign investors selling a net KRW 865.1bn of KOSPI cash equities, while KOSPI program trading posted a KRW 651.3bn net outflow.
Foreign investors were simultaneously shown as net buyers of KRW 962.4bn in KOSPI 200 futures, creating a clear cash-versus-futures divergence.
KOSPI advancers totaled 554 versus 322 decliners despite the index loss; KOSDAQ breadth was almost balanced at 808 advancers and 829 decliners.
Samsung Electronics gained 0.22%, but SK hynix fell 4.88% and NAVER dropped 7.08% on its earnings day.
Samsung SDI rose 7.49%, LG Energy Solution 4.35% and EcoPro BM 4.39%, while day-session USD/KRW fell KRW 7.7 to 1,416.1 per dollar.

3. Indexes and market breadth

KOSPI6,258.77-37.61 (-0.60%)

Open: 6,365.07
High: 6,415.60
Low: 6,158.73
Volume: 299,377k shares
Turnover: KRW 24,730,513mn
Status: Closed

Aug. 7, 2026, 15:30 KST; index points, thousand shares and KRW mn; KRX data via Npay, close marked final; source; checked 20:20 KST.

KOSDAQ798.81-2.86 (-0.36%)

Open: 807.62
High: 814.80
Low: 776.60
Volume: 509,894k shares
Turnover: KRW 5,269,046mn
Status: Closed

Aug. 7, 2026, 15:30 KST; index points, thousand shares and KRW mn; KRX data via Npay, close marked final; source; checked 20:20 KST.

KOSPI 200974.73-8.19 (-0.83%)

Open: 994.75
High: 1,004.61
Low: 960.79
Volume: 145,454k shares
Turnover: KRW 22,561,039mn
Status: Closed

Aug. 7, 2026, 15:30 KST; index points, thousand shares and KRW mn; KRX data via Npay, close marked final; source; checked 20:20 KST.

KOSPI 200 futures Sep. 2026978.75-2.40 (-0.24%)

Open: 987.70
High: 1,007.20
Low: 963.15
Volume: 99,024 contracts
Value: KRW 24,293,139mn
Status: Closed

Aug. 7, 2026 close; points, contracts and KRW mn; KRX data via Npay; source; checked 20:20 KST.

Market breadth and limit-up/limit-down counts
Market	Up	Unchanged	Down	Limit up	Limit down	Reading
KOSPI	554	36	322	3	0	Advancers outnumbered decliners by 1.7 to 1 despite the index loss
KOSDAQ	808	84	829	6	0	Breadth was close to balanced, with a slight negative tilt

Common basis: Aug. 7, 2026, 15:30 KST; stock counts; KRX data via Npay KOSPI and KOSDAQ; checked 20:20 KST. Limit-up names are included in advancers and limit-down names in decliners.

KOSPI 200 breadth was also positive at 131 gainers, four unchanged and 64 decliners despite the index’s 0.83% drop. The data therefore point to a capitalization-weighted drag from a smaller group of large stocks rather than uniform market weakness.

4. Intraday timeline and turning points

09:00 open
Rebound at the open after the prior session’s selloffThe KOSPI opened at 6,365.07 and the KOSDAQ at 807.62, about 1.09% and 0.74% above their previous closes.
Morning; exact time unverified
Upside extended to 6,415.60 on the KOSPI and 814.80 on the KOSDAQThe session highs are verified, but no minute-level timestamps were assigned without a final authoritative source.
Around midday; exact time unverified
Foreign selling and large-cap chip weakness drove a sharp reversalThe KOSPI fell as low as 6,158.73 and the KOSDAQ to 776.60, creating wide intraday ranges. The exact sequence and timing of the extrema were not invented.
Afternoon
Batteries, chemicals and foreign futures buying cushioned the declineSamsung SDI, LG Energy Solution and EcoPro BM rose, while foreign KOSPI 200 futures buying ran opposite to foreign cash selling.
15:30 close
The opening rebound was lost, but indexes recovered from the lowsThe KOSPI finished down 0.60% and the KOSDAQ down 0.36%. Positive KOSPI breadth showed that the headline loss overstated the weakness of the typical KOSPI stock.

5. Foreign, institutional and retail flows

Cash-equity net buying (KRW 100mn)
Market	Retail	Foreign	Institutions	Reading
KOSPI	+2,675	-8,651	+5,854	Institutions and retail absorbed foreign selling
KOSDAQ	+3,402	-2,522	-1,044	Retail absorbed combined foreign and institutional selling
KOSPI 200	+1,559	-7,195	+5,535	Foreign cash selling remained concentrated in large caps

Common basis: Aug. 7, 2026, 15:30 KST; KRW 100mn; KRX data via Npay KOSPI, KOSDAQ and KOSPI 200; checked 20:20 KST. Yonhap at 16:10 reported KOSPI foreign net selling of KRW 858.1bn, KRW 7.0bn different from the KRX-supplied final display. The unresolved discrepancy is recorded; the table uses the higher-priority KRX-supplied closing display.

Program trading and KOSPI 200 futures flows (KRW 100mn)
Category	Retail/arbitrage	Foreign/non-arbitrage	Institutions/total	Reading
KOSPI program	+877	-7,391	-6,513	Non-arbitrage selling drove the program outflow
KOSDAQ program	-208	-2,446	-2,654	Program selling aligned with the index decline
KOSPI 200 futures	-1,444	+9,624	-7,662	Foreign futures buying diverged sharply from foreign cash selling

Common basis: Aug. 7, 2026 close; KRW 100mn; KRX data via Npay KOSPI, KOSDAQ and futures; checked 20:20 KST. The three displayed futures groups exclude other participants and therefore need not sum to zero.

6. Leading and lagging sectors; key stocks

Sector performance at the close
Group	Sector	Change	Up/flat/down	Reading
Leader	Electronic products	+5.40%	7/1/8	Price-weighted strength despite mixed constituent breadth
Leader	Electrical products	+4.90%	41/7/22	Battery names including Samsung SDI and LG Energy Solution strengthened
Leader	Oil & gas / chemicals	+4.41%/+3.98%	11/2/6 · 89/7/27	Rotation broadened into commodity and chemical groups
Laggard	Nonferrous metals	-7.23%	26/2/12	Index and constituent breadth diverged, implying heavy-weight stock effects
Laggard	Airlines / life insurance	-3.24%/-3.62%	0/1/8 · 1/1/2	Oil and stock-specific effects are plausible; no single cause was verified
Laggard	Semiconductors and equipment	-2.05%	38/8/125	Broad weakness alongside SK hynix and equipment names

Common basis: Aug. 7, 2026 close; Npay sector taxonomy; source; checked 20:20 KST. Sector moves and headlines are treated as co-movement and exposure analysis, not verified causality.

Large-cap and leading stocks at the close (prices in KRW)
Market	Stocks	Close	Change	Market relevance
KOSPI	Samsung Electronics / SK hynix	231,000/1,422,000	+0.22%/-4.88%	Large-cap chip divergence; hynix was a major index drag
KOSPI	LG Energy Solution / Samsung SDI	360,000/459,000	+4.35%/+7.49%	Battery large caps offset part of the chip weakness
KOSDAQ	EcoPro BM / EcoPro	107,000/86,000	+4.39%/+2.87%	Battery complex outperformed a lower KOSDAQ
KOSPI	NAVER / Kakao	210,000/39,900	-7.08%/+4.18%	Internet-platform divergence on NAVER’s earnings day

Common basis: Aug. 7, 2026, 15:30 KST KRX closes; prices in KRW; KRX data via Npay Samsung Electronics, SK hynix, LG Energy Solution, Samsung SDI, EcoPro BM, EcoPro and NAVER; checked 20:20 KST.

Turnover: SK hynix traded about KRW 12.5038tn and Samsung Electronics about KRW 7.8351tn. A same-basis official ranking of every individual stock was not obtained, so no unverified rank order is presented.

7. Corporate and policy events

Confirmed fact

NAVER Q2 revenue KRW 3.3888tn; operating profit KRW 520.3bn

NAVER said revenue rose 16.2% year over year, while operating profit slipped 0.2% as AI-infrastructure investment weighed on costs. Global C2C revenue increased 74.9% year over year.

NAVER release

Confirmed fact

NAVER held its Q2 earnings IR at 09:00 KST

KIND lists the Aug. 7 call for domestic and overseas analysts and institutional investors. NAVER’s KRX close was KRW 210,000, down 7.08%.

KIND

Scheduled global event

U.S. July jobs report due at 21:30 KST

The U.S. Bureau of Labor Statistics schedules the July 2026 Employment Situation for Aug. 7 at 08:30 ET. It had not been released by this report’s cut-off.

U.S. BLS

Verification limit

No single official filing established as the cause of SK hynix’s decline

Market coverage cited HBM/AI concerns and foreign selling, but no new DART or company IR disclosure was verified as a sole explanation for the 4.88% price decline.

DART

Fact versus reaction: NAVER’s reported figures and its 7.08% share-price decline are separately verified. The report does not claim that AI investment alone caused the stock move; it states only that the earnings release, heavier investment and price weakness occurred in the same session.

8. Overseas operations and international market reaction

Overseas signals and potential Korean corporate linkages
External signal	Verified value	Status	Korean exposure	Interpretation	Source
U.S. semiconductors	SOX +0.33%	Aug. 6 U.S. close	Samsung Electronics and SK hynix; HBM, DRAM and foundry	SOX rose while SK hynix fell 4.88%, suggesting local positioning or stock-specific expectations outweighed the prior U.S. sector signal	Npay SOX
Battery rotation	Samsung SDI +7.49% LGES +4.35% EcoPro BM +4.39%	Aug. 7 KRX close	North American and European EV/ESS supply chains	Outperformance versus semiconductors is verified, but no single overseas demand release was established as the sole catalyst	KRX/Npay
NAVER global C2C	Revenue +74.9% YoY	Q2 2026	Global C2C and AI compute; NVIDIA AI-factory partnership	Strong overseas growth must be weighed against AI infrastructure spending; one-day price action is not treated as a proxy for long-term business value	NAVER

Checked: Aug. 7, 2026, 20:20 KST. These links are based on business exposure and verified co-movement. They are not presented as company-confirmed single causes of the day’s share-price moves.

9. USD/KRW and JPY/KRW

FX summary
Pair	Value	Change	Basis	Source	Industry implication
USD/KRW	1,416.1	-7.7	Aug. 7, 2026, 15:30 KST day-session close; KRW per USD 1	Seoul FX market / Yonhap	A firmer won can ease imported fuel and material costs but reduce KRW translation of exporters’ foreign revenue
JPY/KRW	894.94	-4.08	Hana Bank reference at 20:18 KST; KRW per JPY 100, not a 15:30 market close	Hana Bank / Npay	Won strength versus the yen can pressure relative pricing for Korean autos and machinery; it helps Japan-bound Korean travelers, while tourism, duty-free and airlines also depend on demand and oil

Timing: USD/KRW is the 15:30 KST day-session close; JPY/KRW is a direct Hana Bank quote at 20:18 KST. No USD/JPY cross-rate was calculated because the timestamps differ.

Divergent signal: Foreign investors sold KOSPI cash equities while USD/KRW fell 7.7 won, meaning the won strengthened. Yonhap cited dollar inflows linked to SK hynix’s ADR process and exporter dollar selling as FX supply factors. Foreign cash-equity selling alone therefore does not explain the currency move.

10. U.S., Asian, futures, oil and rates linkages

Global market summary
Group	Indicators	Values	Change	Data basis	Korea linkage
U.S. equities	Dow / S&P 500 / Nasdaq / SOX	53,885.10 7,709.96 26,348.35 12,048.69	-0.85% -0.18% -0.06% +0.33%	Aug. 6, 2026 local closes	U.S. indexes eased, but the SOX rose, so Korean chip weakness did not simply mirror the U.S. semiconductor benchmark
U.S. Treasuries	2-year / 10-year	4.25%/4.69%	+7bp/+6bp	Aug. 6 U.S. Treasury CMT	Higher yields increase the discount-rate headwind for expensive growth stocks
Federal Reserve	Federal funds target range	3.50%-3.75%	Held July 29	July 29, 2026 FOMC decision	The July jobs report can shift rate expectations before Korea’s next session
Commodities / dollar	WTI / Brent / DXY	$77.29 $82.49 99.940	+2.8% +3.8% +0.002	WTI/Brent Aug. 6 closes; DXY Aug. 7 16:10 KST news snapshot	Higher oil pressures airlines, chemicals and transport costs, with opposite or mixed effects for refiners and energy-related names
Asia	Nikkei / Shanghai / Hang Seng	65,675.65 3,919.51 25,567.85	-0.01% +0.49% +0.15%	Aug. 7, 2026 closes	Asia was mixed to slightly positive, so Korea’s decline was not a uniform regional risk-off move
U.S. futures	S&P 500 / Dow / Nasdaq 100	No reliable synchronized three-contract quote	Excluded	Rechecked through 20:20 KST	Search results suggested flat to slightly higher premarket direction, but exact synchronized figures were not reliable enough to publish

Source mapping and check time: U.S. indexes: Npay Dow, S&P 500, Nasdaq, SOX; yields: U.S. Treasury; FOMC: Federal Reserve; WTI/Brent/DXY: Yonhap market report; Asian and early-Friday context: AP cross-checked against Npay final indexes. Checked Aug. 7, 2026, 20:20 KST.

11. Next-session watchlist

U.S. July jobs report: Watch the 21:30 KST release on Aug. 7 and the reaction in 2-year/10-year yields, U.S. technology and semiconductors.
Foreign cash and program selling: Determine whether KOSPI foreign selling of KRW 865.1bn and program selling of KRW 651.3bn ease on Aug. 10.
Cash-futures divergence: Test whether foreign KOSPI 200 futures buying of KRW 962.4bn was an early shift in exposure or merely short-term hedging/position adjustment.
Chip divergence: Watch whether the gap between Samsung Electronics’ small gain and SK hynix’s 4.88% drop narrows and whether semiconductor breadth improves.
Battery rotation: Check whether gains in Samsung SDI, LG Energy Solution and EcoPro BM persist with turnover support.
USD/KRW in the 1,410s: See whether the divergence between foreign equity selling and won strength persists as ADR-related dollar supply evolves.
NAVER post-earnings reaction: Watch how investors balance revenue growth against AI infrastructure spending after the 7.08% decline.

12. Risks and data limitations

Data not verified or excluded

Single-stock VI events, sidecars, circuit breakers, trading halts, block trades, short-selling spikes, forced liquidation estimates and closing-auction anomalies were not asserted without same-basis final official data.
Session highs and lows are verified, but minute-level timestamps and the complete sequence of all intraday turns were not established; no times were invented.
KOSPI foreign net selling differs between the KRX-supplied Npay final display (KRW 865.1bn) and Yonhap’s 16:10 report (KRW 858.1bn), leaving a KRW 7.0bn unresolved data conflict.
JPY/KRW at 894.94 is a direct Hana Bank reference rate at 20:18 KST, not a 15:30 Seoul FX market close.
No reliable synchronized values for all three major U.S. equity-index futures were obtained as of 20:20 KST, so exact futures figures are excluded.
NAVER results and price action are verified separately, but no single official filing was used to claim sole causality for NAVER, SK hynix or battery-sector moves.

Causality caution: Foreign cash/program selling, SK hynix weakness, higher oil and lower Korean indexes occurred together, but no authority or company confirmed any one factor as the sole cause. Confirmed facts, co-movement and market interpretation are kept separate.

13. Overall assessment

Market temperatureNeutral

Session quality3/5

Flow durabilityLow

VolatilityHigh

Nature of the move

The session looked less like a broad fundamental breakdown and more like a combination of foreign cash/non-arbitrage selling, large-cap chip weakness led by SK hynix, and caution around oil and U.S. rates. Strong batteries and chemicals simultaneously signaled short-term rotation.

Breadth versus concentration

The KOSPI fell 0.60%, yet 554 stocks advanced versus 322 decliners, and KOSPI 200 breadth was also positive. That profile is more consistent with a capitalization-weighted, large-stock-focused correction than broad market deterioration.

Flows and FX

Foreign cash and program selling pointed toward risk reduction, but foreign investors bought KOSPI 200 futures and USD/KRW fell. Cash, derivatives and FX therefore did not align, which is why flow durability is rated low rather than treated as a one-way foreign-capital exit.

Continuation and failure conditions

Stabilization would require contained U.S. yields after payrolls, improving SK hynix/semiconductor breadth, softer foreign non-arbitrage selling and a stable won. Another rise in U.S. yields, renewed chip selling, fading battery rotation and worsening KOSPI breadth would weaken the setup.