Top 10 gainers — October 6, 2026
KOSPI & KOSDAQ, ranked by daily change at the close
| # | Stock | Close | Change | Value traded |
|---|---|---|---|---|
| 1 | Sands LabKOSDAQ 샌즈랩 Sands Lab surges 30% as AI-driven security stocks rally on financial sector hacking fears. | ₩8,970 | +30.0% | ₩58.1bn |
| 2 | Artist StudioKOSDAQ 아티스트스튜디오 | ₩4,290 | +30.0% | ₩2.5bn |
| 3 | RaonsecureKOSDAQ 라온시큐어 RaonSecure jumps as security sector gains momentum following recent hacking incidents. | ₩14,870 | +30.0% | ₩80.7bn |
| 4 | HLB PharmaceuticalKOSDAQ HLB제약 HLB Pharmaceutical rallies 29.97% on broader KOSDAQ gains and improved sentiment toward HLB group stocks. | ₩13,010 | +30.0% | ₩53.0bn |
| 5 | HLB BiostepKOSDAQ HLB바이오스텝 HLB BioStep surges on heavy retail buying despite no specific news or regulatory filings. | ₩3,735 | +29.9% | ₩3.3bn |
| 6 | Yesun TechKOSDAQ 예선테크 | ₩687 | +29.9% | ₩104M |
| 7 | Kukil MetalKOSDAQ 국일신동 | ₩1,104 | +28.8% | ₩866M |
| 8 | Softcen Pref.KOSDAQ 소프트센우 | ₩7,360 | +28.4% | ₩60M |
| 9 | AtonKOSDAQ 아톤 Aton jumps as financial sector hacking concerns fuel a rally in security-themed stocks. | ₩6,980 | +26.9% | ₩125.7bn |
| 10 | HLB Life ScienceKOSDAQ HLB생명과학 HLB Life Science climbs over 25% amid a broader rally across the HLB group. | ₩4,470 | +25.0% | ₩27.6bn |
Click a stock for its current price and chart. This page is the archived record for October 6, 2026.