Top 10 gainers — October 12, 2026
KOSPI & KOSDAQ, ranked by daily change at the close
| # | Stock | Close | Change | Value traded |
|---|---|---|---|---|
| 1 | SeosanKOSDAQ 서산 Seosan jumps 30% as foreign investors pile in, with heavy net buying lifting the metal processing and materials company | ₩6,760 | +30.0% | ₩20.0bn |
| 2 | Yesun TechKOSDAQ 예선테크 | ₩1,508 | +30.0% | ₩40M |
| 3 | Kumho ElectricKOSPI 금호전기 Kumho Electric hits limit-up on hopes of benefiting from SK Group Chairman Chey Tae-won's remarks on a Honam semiconductor cluster | ₩11,070 | +29.9% | ₩132.5bn |
| 4 | BioinfraKOSDAQ 바이오인프라 | ₩1,173 | +29.9% | ₩42M |
| 5 | Yooshin EngineeringKOSDAQ 유신 Yooshin hits limit-up as SK Group moves to speed up its Honam semiconductor cluster, boosting the engineering and design firm | ₩22,650 | +29.9% | ₩9.4bn |
| 6 | Hyungji Innovation and CreativeKOSDAQ 형지I&C Hyungji I&C surges to limit-up as a delisting delay removes uncertainty | ₩726 | +29.9% | ₩3.7bn |
| 7 | Hyungji GlobalKOSDAQ 형지글로벌 Hyungji Global surges on news that delisting proceedings will be put on hold | ₩413 | +26.7% | ₩5.6bn |
| 8 | Hanwha Machinery & Service HoldingsKOSPI 한화머시너리앤서비스홀딩스 Hanwha Machinery & Services Holdings jumps on a ₩128.5bn tender offer by President Kim Dong-sun to take a 19% stake in Hanwha M&S | ₩7,540 | +24.0% | ₩84.0bn |
| 9 | IremKOSDAQ 이렘 | ₩2,100 | +23.8% | ₩1.6bn |
| 10 | Kumho Engineering & ConstructionKOSPI 금호건설 Kumho Engineering & Construction soars 20.29% as foreign and retail investors buy together and demand improves | ₩13,400 | +20.3% | ₩192.2bn |
Click a stock for its current price and chart. This page is the archived record for October 12, 2026.