10:00verdict at this hour
KOSPI gaps up at open, chips lead; KOSDAQ lags behind
The KOSPI opened at 6,435.6 on Wednesday, August 12 (2026), surged to an intraday high of 6,509.04 by 9:28 before pulling back to the 6,460–6,480 range near 10:00, with foreigners provisionally net buyers of ₩394.6bn on the main board.The KOSDAQ opened at 853.01 but drifted lower through the half-hour mark before partially recovering, with retail investors carrying the session and foreigners provisionally net sellers of ₩101.4bn.
10:00Snapshot
A window that records the market at that hour, like a photograph
Nikkei up 0.14% early; won firms to 1,411.78 per dollar; Philadelphia Semiconductor Index (SOX)A U.S. equity index tracking roughly 30 companies involved in the design, distribution, manufacture, and sale of semiconductors.Because Korean chipmakers such as Samsung Electronics and SK hynix derive a significant share of revenue from global semiconductor demand cycles, same-day SOX moves are widely watched as a leading directional signal for KOSPI chip stocks. closed +0.87% overnight
Top by trading value10— snapshot
A window on how the top trading-value names have moved up to this hour
Samsung Electronics and LG Electronics pace KOSPI top-ten by turnover in early trade
Through approximately 9:52, the KOSPI’s two heaviest-traded names were Samsung Electronics at ₩1,249.7bn and SK hynix at ₩899.3bn in provisional turnover — together they account for the bulk of index-level movement in the opening hour.LG Electronics (₩132.8bn) and SK Square (₩164.4bn) also attracted outsized early interest relative to their usual footprint, consistent with the electronics and semiconductor sector reading of +3.62% and +2.11% respectively at this hour.
| Stock | Prior close | Open | Gap | Last at 10:00 | High (time) | Low (time) |
|---|---|---|---|---|---|---|
| Samsung Electronics | 239,495 | 243,500 | +1.67% | 249,500 (10:00) | 250,500 (09:15) | 241,000 (09:00) |
| SK hynix | 1,424,951 | 1,456,000 | +2.18% | 1,464,000 (10:00) | 1,478,000 (09:25) | 1,440,000 (09:10) |
| Samsung Electro-Mechanics | 1,261,967 | 1,288,000 | +2.06% | 1,314,000 (10:00) | 1,322,000 (09:25) | 1,275,000 (09:00) |
| SK Square | 944,970 | 982,000 | +3.92% | 1,014,000 (10:00) | 1,018,000 (09:25) | 970,000 (09:00) |
| Kumho E&C | 11,490 | 11,620 | +1.13% | 14,310 (10:00) | 14,490 (09:30) | 11,340 (09:00) |
| LG Electronics | 181,708 | 184,200 | +1.37% | 195,200 (10:00) | 197,800 (09:10) | 184,200 (09:00) |
| Daewon Cable | 14,520 | 15,100 | +3.99% | 15,480 (10:00) | 15,740 (09:25) | 15,020 (09:00) |
| Samsung Electronics (Pref.) | 180,193 | 182,500 | +1.28% | 185,000 (10:00) | 186,400 (09:15) | 180,500 (09:00) |
| NAVER | 213,993 | 215,000 | +0.47% | 218,000 (10:00) | 220,500 (09:10) | 214,500 (09:00) |
| Korea Kolmar | 107,896 | 114,100 | +5.75% | 128,800 (10:00) | 129,200 (09:35) | 109,000 (09:10) |
LG Electronics set its session low at the open (₩184,200 at 9:00) and its intraday high at 9:47 (₩202,000), a range of ₩17,800 within the first 47 minutes — the widest absolute intraday swing among the KOSPI top-ten by turnover.Kolmar Korea was still climbing at the data cut-off, hitting its session high of ₩132,600 at 9:52, while NAVER’s intraday high of ₩220,500 was set as early as 9:10 and the price had since retreated to the open level of ₩216,500.
Gainers5· Decliners5— snapshot
A window on the biggest gainers and decliners, and the reasons behind them
KOSPI breadth tilts positive as chips and beauty names surge; shipbuilders retreat
On the KOSPI, gainers included Kumho Electric (+29.9%), Kumho Engineering & Construction (+23.5%), Kolmar Korea (+17.7%), Cosmax (+17.62%), and Iljin Electric (+16.99%) — a mix of cosmetics OEM names and a construction stock alongside the semiconductor complex, suggesting the advance is not concentrated in a single theme.On the retreat side, HD Korea Shipbuilding & Offshore Engineering fell –4.15% and HD Hyundai Heavy Industries –3.98%, while OCI Holdings dropped –5.48% and Hanwha Solutions slipped –1.51% — shipbuilding and solar names account for the bulk of the KOSPI’s decline column.On the KOSDAQ, Delicious (–15.86%), Pearl Abyss (–14.09%), Simtech (–8.34%), and Alteogen (–4.27%) led the decline, while Silicon2 (+10.11%) and KBI Metal (+9.3%) moved sharply higher — the KOSDAQ’s intraday picture is markedly more mixed than the KOSPI’s.