10:00verdict at this hour
KOSPI Opens Gap-Up, Fades to 6,297 by 10:00 as Foreigners Sell ₩323.1bn
The KOSPI opened at 6,292 on Monday, August 10 (2026), briefly spiked to a session high of 6,394 at 09:13 before reversing sharply, and was trading near 6,297 at 10:00 — still above Friday’s close but well off the morning peak.The KOSDAQ traced a different path: it found its low of 807.66 at the opening bell, then climbed steadily through the first hour to 839 by 10:00, with defense, biotech, and semiconductor-equipment names driving the advance while foreigners net sold ₩323.1bn on the KOSPI and net bought ₩141.1bn on the KOSDAQ in early trade.
10:00Snapshot
A window that records the market at that hour, like a photograph
KOSPI Intraday Swing of 129 Points in First Hour; KOSDAQ Climbs Steadily from Open Low to 839
Top by trading value10— snapshot
A window on how the top trading-value names have moved up to this hour
SK hynix Trades ₩1.349tn in First Hour, Topping KOSPI Turnover; Alteogen Leads KOSDAQ at ₩110.8bn
SK hynix dominated KOSPI turnover through 10:00 with ₩1,348.7bn changing hands, opening at ₩1,425,000, touching a session high of ₩1,487,000 at 09:14, before retreating to ₩1,434,000 — a pattern similar to the broader KOSPI arc that peaked at 09:13.Samsung Electronics traded ₩838.4bn, opening at ₩236,000 and printing a high of ₩238,500 at 09:12 before settling back to ₩233,000, suggesting the early gap-up in large-cap tech was largely sold into.
| Stock | Prior close | Open | Gap | High (time) | High (time) | Low (time) |
|---|---|---|---|---|---|---|
| SK hynix | 1,422,055 | 1,443,000 | +1.47% | 1,487,000 (09:14) | 1,434,000 | +0.84% |
| Samsung Electronics | 230,990 | 236,000 | +2.17% | 238,500 (09:12) | 233,000 | +0.87% |
| Samsung Electro-Mechanics | 1,277,943 | 1,315,000 | +2.90% | 1,357,000 (09:13) | 1,292,000 | +1.10% |
| Hanwha Solutions | 33,899 | 33,700 | −0.59% | 36,000 (09:02) | 34,550 | +1.92% |
| SK Square | 939,038 | 951,000 | +1.27% | 977,000 (09:14) | 935,000 | −0.43% |
| Samsung Electronics (Pref.) | 170,095 | 172,200 | +1.24% | 175,800 (09:14) | 172,800 | +1.59% |
| Kwangju Semiconductor | 7,810 | 8,120 | +3.97% | 9,640 (09:20) | 9,150 | +17.16% |
| Sanil Electric | 157,302 | 169,600 | +7.82% | 185,900 (09:27) | 178,900 | +13.73% |
| Daewon Cable | 13,790 | 14,320 | +3.84% | 14,760 (09:58) | 14,440 | +4.71% |
| Doosan Enerbility | 77,097 | 79,500 | +3.12% | 79,500 (09:00) | 78,300 | +1.56% |
Hanwha Solutions was notable for the opposite path: it opened at ₩33,950, hit its session high of ₩36,000 as early as 09:02, then slid to a low of ₩33,250 at 09:20 before recovering to ₩35,250 — a volatile reversal in the first 20 minutes.On the KOSDAQ, Alteogen printed ₩1,108bn in turnover, opening at ₩316,000 and reaching ₩345,500, while Daehan Optical Communications led all KOSDAQ names in volume at ₩1,863bn, opening at ₩11,750 and climbing to ₩12,810 by 10:00.
Gainers5· Decliners5— snapshot
A window on the biggest gainers and decliners, and the reasons behind them
Defense and Biotech Names Surge While Financials and Energy Drop — KOSPI Breadth Splits on Sector Rotation
Among KOSPI names with at least ₩100bn in turnover, Gwangjeon rose +17.16%, Sanilyeokgi +13.60%, Koryeo Zinc +11.93%, and LIG Defence & Aerospace +9.18%; on the other side, Shinhan Financial fell −4.91%, HD Hyundai Energy Solution −5.56%, LG Household & Health Care −5.25%, and Amorepacific −5.71%.On the KOSDAQ, Alteogen jumped +13.11%, Machinalux +14.11%, and Daehan Optical Communications +11.78% on heavy volume, while decliners were scarce — the KOSDAQ down-list with ₩100bn+ turnover showed only GNC Energy at −1.15% in negative territory, indicating broad participation in the KOSDAQ advance.