Stock listing
KRX:420570 J2KBIO Co., Ltd. (제이투케이바이오) 주가
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Share price · KRX:420570
₩7,300.00 KRW -430.00 (-5.6%)
Close on Oct 30, 2026
- Day range
- ₩7,180.00 – ₩7,740.00 KRWOct 30, 2026
- Volume
- 26,530 sharesOct 30, 2026
- Market cap
- ₩42.69B KRWAt the close on Oct 30, 2026 · price × 5.85M shares outstanding
- 52-week range
- ₩6,710.00 – ₩12,860.00 KRWLowest and highest trades, Oct 31, 2025 – Oct 30, 2026
- Traded on an average day
- ₩589.1M KRWMedian day 30,038 shares · last 3 months, Jul 30, 2026 – Oct 30, 2026

Daily closes
Last 3 months, Jul 30, 2026 – Oct 30, 2026 · KRX:420570 · KRW, adjusted for splits
| Day | Close | Change | % | Open | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| ₩7,300.00 | -430.00 | -5.6% | ₩7,740.00 | ₩7,740.00 | ₩7,180.00 | 26,530 | |
| ₩7,730.00 | -320.00 | -4.0% | ₩8,050.00 | ₩8,050.00 | ₩7,570.00 | 27,177 | |
| ₩8,050.00 | -50.00 | -0.6% | ₩8,220.00 | ₩8,260.00 | ₩7,930.00 | 17,141 | |
| ₩8,100.00 | 0.00 | 0.0% | ₩8,100.00 | ₩8,300.00 | ₩8,040.00 | 6,824 | |
| ₩8,100.00 | -430.00 | -5.0% | ₩8,420.00 | ₩8,560.00 | ₩8,100.00 | 11,885 | |
| ₩8,530.00 | +120.00 | +1.4% | ₩8,200.00 | ₩8,660.00 | ₩8,140.00 | 19,564 | |
| ₩8,410.00 | -410.00 | -4.6% | ₩8,770.00 | ₩8,780.00 | ₩8,400.00 | 11,841 | |
| ₩8,820.00 | -20.00 | -0.2% | ₩8,770.00 | ₩9,100.00 | ₩8,770.00 | 8,332 | |
| ₩8,840.00 | 0.00 | 0.0% | ₩8,900.00 | ₩8,910.00 | ₩8,520.00 | 12,980 | |
| ₩8,840.00 | +140.00 | +1.6% | ₩8,700.00 | ₩8,910.00 | ₩8,700.00 | 7,008 | |
| ₩8,700.00 | +450.00 | +5.5% | ₩8,660.00 | ₩8,830.00 | ₩8,240.00 | 8,819 | |
| ₩8,250.00 | -350.00 | -4.1% | ₩8,500.00 | ₩8,500.00 | ₩8,100.00 | 24,348 | |
| ₩8,600.00 | 0.00 | 0.0% | ₩8,550.00 | ₩8,740.00 | ₩8,400.00 | 14,434 | |
| ₩8,600.00 | -380.00 | -4.2% | ₩9,170.00 | ₩9,170.00 | ₩8,300.00 | 29,140 | |
| ₩8,980.00 | -530.00 | -5.6% | ₩9,440.00 | ₩9,700.00 | ₩8,980.00 | 14,431 | |
| ₩9,510.00 | -440.00 | -4.4% | ₩9,950.00 | ₩9,950.00 | ₩9,420.00 | 31,080 | |
| ₩9,950.00 | +810.00 | +8.9% | ₩9,160.00 | ₩9,990.00 | ₩9,150.00 | 67,693 | |
| ₩9,140.00 | +90.00 | +1.0% | ₩9,070.00 | ₩9,400.00 | ₩8,920.00 | 22,630 | |
| ₩9,050.00 | -400.00 | -4.2% | ₩9,480.00 | ₩9,480.00 | ₩8,900.00 | 32,815 | |
| ₩9,450.00 | +350.00 | +3.8% | ₩9,070.00 | ₩9,480.00 | ₩8,890.00 | 24,185 | |
| ₩9,100.00 | -400.00 | -4.2% | ₩9,510.00 | ₩9,650.00 | ₩9,060.00 | 36,510 | |
| ₩9,500.00 | +60.00 | +0.6% | ₩9,450.00 | ₩9,510.00 | ₩9,200.00 | 20,141 | |
| ₩9,440.00 | +220.00 | +2.4% | ₩9,200.00 | ₩9,650.00 | ₩9,200.00 | 22,249 | |
| ₩9,220.00 | +10.00 | +0.1% | ₩9,220.00 | ₩9,400.00 | ₩9,140.00 | 31,090 | |
| ₩9,210.00 | 0.00 | 0.0% | ₩9,150.00 | ₩9,320.00 | ₩9,150.00 | 26,250 | |
| ₩9,210.00 | -560.00 | -5.7% | ₩9,570.00 | ₩9,740.00 | ₩9,170.00 | 73,665 | |
| ₩9,770.00 | +30.00 | +0.3% | ₩9,720.00 | ₩10,200.00 | ₩9,390.00 | 93,092 | |
| ₩9,740.00 | +1,170.00 | +13.7% | ₩8,800.00 | ₩10,500.00 | ₩8,740.00 | 585,937 | |
| ₩8,570.00 | +220.00 | +2.6% | ₩8,490.00 | ₩8,600.00 | ₩8,150.00 | 30,935 | |
| ₩8,350.00 | -90.00 | -1.1% | ₩8,440.00 | ₩8,540.00 | ₩8,350.00 | 11,309 | |
| ₩8,440.00 | -10.00 | -0.1% | ₩8,250.00 | ₩8,590.00 | ₩8,250.00 | 18,301 | |
| ₩8,450.00 | -60.00 | -0.7% | ₩8,510.00 | ₩8,560.00 | ₩8,290.00 | 21,090 | |
| ₩8,510.00 | -210.00 | -2.4% | ₩8,710.00 | ₩8,910.00 | ₩8,500.00 | 20,956 | |
| ₩8,720.00 | -130.00 | -1.5% | ₩8,850.00 | ₩9,050.00 | ₩8,710.00 | 21,592 | |
| ₩8,850.00 | -280.00 | -3.1% | ₩9,130.00 | ₩9,130.00 | ₩8,810.00 | 34,972 | |
| ₩9,130.00 | -310.00 | -3.3% | ₩9,380.00 | ₩9,380.00 | ₩8,990.00 | 44,967 | |
| ₩9,440.00 | +10.00 | +0.1% | ₩9,440.00 | ₩9,870.00 | ₩9,280.00 | 28,642 | |
| ₩9,430.00 | -780.00 | -7.6% | ₩10,220.00 | ₩10,280.00 | ₩9,350.00 | 71,111 | |
| ₩10,210.00 | -650.00 | -6.0% | ₩10,670.00 | ₩10,840.00 | ₩9,950.00 | 54,050 | |
| ₩10,860.00 | +680.00 | +6.7% | ₩10,180.00 | ₩11,180.00 | ₩10,180.00 | 118,687 | |
| ₩10,180.00 | -430.00 | -4.1% | ₩10,470.00 | ₩10,570.00 | ₩9,900.00 | 35,950 | |
| ₩10,610.00 | +40.00 | +0.4% | ₩10,470.00 | ₩10,750.00 | ₩10,220.00 | 44,736 | |
| ₩10,570.00 | +160.00 | +1.5% | ₩10,400.00 | ₩10,620.00 | ₩10,160.00 | 56,481 | |
| ₩10,410.00 | +600.00 | +6.1% | ₩9,890.00 | ₩10,800.00 | ₩9,670.00 | 156,364 | |
| ₩9,810.00 | +600.00 | +6.5% | ₩9,390.00 | ₩9,850.00 | ₩9,120.00 | 121,817 | |
| ₩9,210.00 | +460.00 | +5.3% | ₩8,750.00 | ₩9,390.00 | ₩8,750.00 | 51,720 | |
| ₩8,750.00 | -150.00 | -1.7% | ₩8,780.00 | ₩8,980.00 | ₩8,520.00 | 43,169 | |
| ₩8,900.00 | +250.00 | +2.9% | ₩8,760.00 | ₩8,930.00 | ₩8,680.00 | 27,360 | |
| ₩8,650.00 | -430.00 | -4.7% | ₩9,010.00 | ₩9,010.00 | ₩8,600.00 | 61,328 | |
| ₩9,080.00 | -550.00 | -5.7% | ₩9,630.00 | ₩9,670.00 | ₩9,050.00 | 91,207 | |
| ₩9,630.00 | -130.00 | -1.3% | ₩9,900.00 | ₩10,040.00 | ₩9,560.00 | 130,719 | |
| ₩9,760.00 | -2,240.00 | -18.7% | ₩11,420.00 | ₩11,420.00 | ₩9,650.00 | 517,381 | |
| ₩12,000.00 | +810.00 | +7.2% | ₩11,390.00 | ₩12,860.00 | ₩10,850.00 | 279,230 | |
| ₩11,190.00 | +630.00 | +6.0% | ₩10,720.00 | ₩11,290.00 | ₩10,560.00 | 67,071 | |
| ₩10,560.00 | +230.00 | +2.2% | ₩10,330.00 | ₩10,750.00 | ₩10,020.00 | 22,808 | |
| ₩10,330.00 | +80.00 | +0.8% | ₩10,250.00 | ₩10,660.00 | ₩9,870.00 | 39,341 | |
| ₩10,250.00 | +720.00 | +7.6% | ₩9,460.00 | ₩10,250.00 | ₩9,310.00 | 46,020 | |
| ₩9,530.00 | +190.00 | +2.0% | ₩9,450.00 | ₩9,580.00 | ₩9,220.00 | 14,596 | |
| ₩9,340.00 | -10.00 | -0.1% | ₩9,250.00 | ₩9,450.00 | ₩8,940.00 | 25,087 | |
| ₩9,350.00 | -100.00 | -1.1% | ₩9,300.00 | ₩9,520.00 | ₩9,030.00 | 18,972 | |
| ₩9,450.00 | +220.00 | +2.4% | ₩9,200.00 | ₩9,500.00 | ₩8,520.00 | 54,957 | |
| ₩9,230.00 | +30.00 | +0.3% | ₩9,240.00 | ₩9,240.00 | ₩8,620.00 | 42,783 |
- Ticker
- KRX:420570
- Asset type
- Stock
- Exchange
- KRX
- Currency
- KRW
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