verdict at the close
KOSPI Closes at 6,813.34, Up 3.56% — Foreigners Net Buy ₩3.72tn
The KOSPI settled at 6,813.34 on Thursday, August 13 (2026), a gain of 3.56% on the day, as foreign investors posted provisional net purchases of ₩3.72tn on the main board — the figures are preliminary and will be confirmed after 18:00 KST.The KOSDAQ added 0.29% to close at 861.37, lagging the main board by a wide margin as the session’s gains concentrated in large-cap chip names rather than in the smaller-cap market.
The day’s path
A window marking the hours when direction turned during the session
KOSPI Peaks at 6,895.63 in the First Ten Minutes, Troughs at 6,748.13 Near 15:03, Then Recovers to Close at 6,813.34.
Top by trading value10— snapshot
A window on how the top trading-value names have moved up to this hour
Samsung Electronics (₩9,517.7bn) and SK hynix (₩7,484.9bn) Together Anchored the KOSPI Tape as Chip Names Swept the Volume Board.
| Stock | Prior close | Open | Gap | High (time) | Close | Change | Low (time) |
|---|---|---|---|---|---|---|---|
| Samsung Electronics | 255,506 | 267,500 | +4.69% | 271,000 (13:10) | 268,000 | +4.89% | 262,500 (09:45) |
| SK hynix | 1,503,965 | 1,582,000 | +5.19% | 1,634,000 (09:20) | 1,593,000 | +5.92% | 1,567,000 (09:00) |
| Samsung Electro-Mechanics | 1,335,051 | 1,432,000 | +7.26% | 1,548,000 (13:11) | 1,503,000 | +12.58% | 1,412,000 (09:00) |
| Samsung Electronics (Pref.) | 186,106 | 190,000 | +2.09% | 191,000 (09:06) | 187,800 | +0.91% | 186,200 (15:01) |
| SK Square | 1,024,019 | 1,101,000 | +7.52% | 1,150,000 (09:06) | 1,117,000 | +9.08% | 1,082,000 (09:00) |
| Kumho E&C | 14,930 | 15,900 | +6.50% | 18,040 (09:05) | 14,370 | −3.75% | 14,170 (15:06) |
| SK eternix | 52,700 | 54,000 | +2.47% | 59,900 (11:59) | 57,100 | +8.35% | 53,200 (09:00) |
| Samwha Capacitor | 87,997 | 92,900 | +5.57% | 110,800 (10:18) | 103,300 | +17.39% | 91,500 (09:00) |
| NAVER | 215,509 | 218,500 | +1.39% | 230,000 (14:32) | 226,500 | +5.10% | 215,500 (09:34) |
| Hanwha Aerospace | 1,155,985 | 1,167,000 | +0.95% | 1,213,000 (09:09) | 1,185,000 | +2.51% | 1,164,000 (09:21) |
The KOSPI hit its session high of 6,895.63 at 09:10 before retreating steadily into the 14:30–15:05 window, where it touched the session low of 6,748.13 at 15:03; a closing-auction recovery lifted the final print to 6,813.34.SK hynix reached its intraday peak of ₩1,634,000 at 09:20 and Samsung Electro-Mechanics topped out at ₩1,548,000 at 13:11, both pulling back before the close, while NAVER set its high of ₩230,000 as late as 14:32 and held those gains into the bell.
Flow summary
A window on how much foreign investors, retail investors, investment firms and pension funds each bought and sold
Foreigners net bought ₩3.72tn on KOSPI as the index closed up 3.56% at 6,813.34, while KOSDAQ added 0.29% to 861.37 on a day when semiconductor names dominated both the flow and the tape.
The stocks that moved the market — top by turnover10
A window on which investor groups backed the most heavily traded stocks
Samsung Electronics and SK hynix together drew ₩170.0bn in combined turnover as chip names swept the KOSPI volume board on Thursday, August 13 (2026).
Samsung Electronics (₩9,517.7bn) and SK hynix (₩7,484.9bn) together accounted for the bulk of KOSPI turnover, with Samsung Electro-Mechanics (₩1,739.3bn) a distant third on its 12.58% gain.Kumho Construction drew ₩531.7bn in KOSPI turnover while finishing 3.75%lower, and on KOSDAQ, K&S INC topped the volume table at ₩501.4bn despite closing up 39.82% — a gap between price move and volume rank that warrants monitoring.
| Stock | Close | Change | Turnover | Foreign investors | Institutions | Investment firms | Pension funds | Retail investors |
|---|---|---|---|---|---|---|---|---|
| Samsung Electronics | ₩268,000 | +4.89% | ₩9.52tn | +₩1.55tn | −₩309.9bn | −₩326.1bn | −₩37.8bn | −₩1.23tn |
| SK hynix | ₩1,593,000 | +5.92% | ₩7.48tn | +₩1.06tn | +₩257.8bn | −₩94.4bn | +₩117.8bn | −₩1.27tn |
| Samsung Electro-Mechanics | ₩1,503,000 | +12.58% | ₩1.74tn | +₩153.7bn | +₩32.6bn | +₩7.0bn | −₩18.8bn | −₩183.8bn |
| Samsung Electronics (Pref.) | ₩187,800 | +0.91% | ₩1.05tn | −₩99.4bn | +₩9.8bn | +₩7.5bn | +₩31.1bn | +₩100.6bn |
| SK Square | ₩1,117,000 | +9.08% | ₩869.4bn | +₩30.2bn | +₩53.2bn | −₩48.6bn | +₩95.4bn | −₩77.7bn |
| Kumho E&C | ₩14,370 | −3.75% | ₩531.7bn | −₩7.8bn | −₩1.2bn | −₩0.1bn | +₩0.0bn | +₩8.5bn |
| SK eternix | ₩57,100 | +8.35% | ₩421.6bn | +₩30.7bn | +₩5.7bn | +₩3.7bn | +₩0.8bn | −₩36.3bn |
| Samwha Capacitor | ₩103,300 | +17.39% | ₩415.3bn | −₩6.1bn | +₩1.1bn | −₩0.2bn | +₩1.4bn | +₩4.5bn |
| NAVER | ₩226,500 | +5.10% | ₩411.6bn | +₩45.5bn | +₩62.8bn | +₩19.0bn | +₩27.5bn | −₩96.7bn |
| Hanwha Aerospace | ₩1,185,000 | +2.51% | ₩292.5bn | +₩31.2bn | −₩16.6bn | −₩26.4bn | +₩0.6bn | −₩14.8bn |
Gainers5· Decliners5 — KOSPI & KOSDAQ
A window on the biggest gainers and decliners, and the reasons behind them
Semiconductors and component plays took the KOSPI gainers’ table while consumer and shipping names retreated — breadth on KOSDAQ was net negative even as the index edged higher.
On KOSPI, the gainers’ list was dominated by component and manufacturing names — Samhwa Capacitor +17.39%, Samsung Electro-Mechanics +12.58%, SK Square +9.08% — while Korea Electric Power (−6.63%), Dalba Global (−9.92%), and Samsung Life Insurance (−3.64%) led the decliners (all filtered for ₩10bn+ turnover).KOSDAQ breadth was net negative on today’s Nextrade (NXT) — Korea’s Alternative Trading SystemA KRX-approved alternative trading venue that operates pre-market (8:00–9:00), main (9:00–15:30), and after-market (15:40–20:00) sessions alongside the main KRX exchange.NXT data provides an early read on after-hours sentiment and breadth that is not available from the KRX main session alone. snapshot (243 advances vs. 344 declines among 608 names), even as the index itself inched higher, suggesting the gain was concentrated in a handful of names; JYP Ent. fell 11.20% and Silicontu dropped 9.83% among the larger KOSDAQ losers.
After-Hours Outlook
A window on what to watch in after-hours trade once the regular session ends
Closing-auction recovery keeps KOSPI above 6,800; NXT after-market turnover and U.S. futures in focus.
With the KOSPI settling at 6,813.34 after a late-session dip to 6,748.13, the Simultaneous Quotation / Closing Call AuctionA ten-minute order-accumulation window (15:20–15:30 KST on KRX) during which buy and sell orders are matched at a single price to determine the official closing price.The closing auction price is the definitive official close and can differ materially from the last continuous-trading print at 15:20, which is why intraday chart series are not used as the closing price in this letter. added roughly 41 points — the NXT after-market session (data for today will register in the evening collection) and overnight S&P 500 futures (last at 7,766.75, +0.09% as of 05:00 KST) will be the first reads on how the move is received offshore.In the 2026 regime, Thursdays have seen foreigners net sell in 72 of 32 sessions on average (net outflow ₩1,077.7bn per Thursday, foreign net-buy probability 28%), so today’s ₩3.72tn provisional inflow is a departure from the Thursday pattern that the final confirmation after 18:00 KST will either validate or trim.