10:00verdict at this hour
KOSPI Opens Sharply Lower, KOSDAQ Surges Despite Philadelphia Semiconductor Index (SOX)A U.S. equity index tracking 30 major semiconductor companies, widely used as a real-time barometer of global chip-sector sentiment.Because Korean chipmakers Samsung Electronics and SK hynix are among the world’s largest semiconductor producers, a sharp SOX move overnight often correlates with their opening-bell direction on the KRX. Slump
The KOSPI gapped down at the open on Tuesday, August 11 (2026), with the index touching a session low of 6,213.78 at 09:07 before recovering to the 6,240–6,278 range through mid-morning, as the Philadelphia Semiconductor Index had fallen 2.94% in the prior U.S. session.The KOSDAQ, by contrast, opened near 847 and climbed steadily through the first hour, reaching 875.16 at 09:51 before easing back toward 869 by 10:10 — a divergence that confounded the morning call, which had forecast a muted or slightly lower open for the secondary market.
P4 and P5 await their verdicts; final scoring runs in the Final edition (20:00 KST)
10:00Snapshot
A window that records the market at that hour, like a photograph
Foreigners Net Sell ₩235bn on KOSPI and ₩202.7bn on KOSDAQ in Early Trade; Retail Offsets Both Markets
Top by trading value10— snapshot
A window on how the top trading-value names have moved up to this hour
SK hynix Tops KOSPI Turnover at ₩1.17tn Despite −2.18% Drop; Jusung Engineering Leads KOSDAQ at ₩149.5bn
Among the top ten by turnover on the KOSPI, SK hynix registered the widest intraday range — opening at 1,405,000 won, reaching a high of 1,410,000 at 09:04, then sliding to a low of 1,373,000 at 10:09 — while Samsung Electronics moved in a narrower band between 227,500 (low, 09:18) and 232,500 (high, 09:04), settling near 231,000.Hanwha Solutions was the most volatile of the KOSPI top ten in proportional terms, swinging from a low of 32,900 at 09:03 to a high of 38,250 at 09:18 before settling at 36,350, generating ₩167.3bn in turnover; Kumho Engineering & Construction extended gains from its 09:00 low of 8,940 all the way to 11,490 by 10:01 on ₩116.5bn.
| Stock | Prior close | Open | Gap | High (time) | High (time) | Low (time) |
|---|---|---|---|---|---|---|
| SK hynix | 1,419,955 | 1,405,000 | −1.05% | 1,410,000 (09:04) | 1,389,000 | −2.18% |
| Samsung Electronics | 230,011 | 229,500 | −0.22% | 232,500 (09:04) | 231,000 | +0.43% |
| Daewon Cable | 14,950 | 15,050 | +0.67% | 16,160 (09:12) | 15,330 | +2.54% |
| Samsung Electro-Mechanics | 1,273,986 | 1,238,000 | −2.82% | 1,241,000 (09:00) | 1,215,000 | −4.63% |
| Hanwha Solutions | 35,250 | 34,200 | −2.98% | 38,250 (09:18) | 36,350 | +3.12% |
| Kumho E&C | 8,840 | 9,030 | +2.15% | 11,490 (10:01) | 11,180 | +26.47% |
| SK eternix | 51,300 | 52,400 | +2.14% | 54,800 (09:10) | 52,500 | +2.34% |
| SK Square | 949,048 | 929,000 | −2.11% | 935,000 (09:04) | 922,000 | −2.85% |
| Samsung Electronics (Pref.) | 171,996 | 170,000 | −1.16% | 173,300 (09:04) | 171,600 | −0.23% |
| GS E&C | 34,900 | 34,200 | −2.01% | 36,200 (10:08) | 35,800 | +2.58% |
On the KOSDAQ, Jusung Engineering’s session low came at the open (139,300 at 09:00) and its high of 163,800 arrived by 09:12, with the stock holding near that level through 10:10 — indicating the opening gap held rather than faded.Samsung Electro-Mechanics stood out on the KOSPI as a stock whose high (1,241,000) was printed at the very first minute of trade (09:00) and whose low (1,191,000) came at 10:09, reflecting steady intraday selling pressure that deepened as the morning progressed.
Gainers5· Decliners5— snapshot
A window on the biggest gainers and decliners, and the reasons behind them
Defense & Power Names Slide While Construction, Energy Lead Gainers; KOSDAQ Semiconductor Equipment Surges
On the KOSPI, the sharpest declines were concentrated in defense & aerospace (Korea Aerospace Industries −6.29%, Hyosung Heavy Industries −4.09%, LS ELECTRIC −3.12%) and consumer names (CJ CheilJedang −7.15%), while construction and energy credits advanced — Hyundai Construction +4.07%, S-Oil +5.37%, Hanwha Solutions +3.12%.On the KOSDAQ, semiconductor equipment names dominated the gainers: Jusung Engineering +12.85%, Wonik IPS +9.25%, and SPG +9.22% — running counter to the semiconductor sector’s weak tone on the KOSPI — while Daehang Fiber Optics fell −5.34% on heavy volume (₩100.9bn).