JONBUR Research · Update note
You're reading an earlier report from Oct 19, 2026. See the latest report
Curiox Biosystems · 445680 · Medical & precision devices
Curiox Biosystems: Shares Rise 27.9% in Five Days on Heavy Volume, No Filing Explains the Move
Why this report
Written after:
- Big price moveShares up 27.9% over 5 trading days on 2.7× normal volumeOct 19, 2026
Curiox Biosystems shares rose 27.9% over five trading days to ₩69,300 on 2.7 times normal volume. Nothing in the data explains the move, and the model estimate is essentially unchanged at ₩379 per share, so the gap to the market price has widened.
Written Oct 19, 2026 · Data as of Oct 19, 2026 · 0 views
This is not financial advice. The report does not recommend buying or selling anything.
What happened
From 2026-10-13 to 2026-10-19, the shares gained 27.9% on volume 2.7 times normal. The close on 2026-10-19 was ₩69,300, giving a market value of about ₩1.19T. Returns are now 51.1% over one month and 94.4% over three months, against 3.0% over one year. The shares remain below the 52-week high of ₩149,200.
No filing excerpts were provided for this move. The most recent filings are a trading plan report for executives and major shareholders (2026-10-02), amended annual reports (2026-10-01) and the half-year report (2026-08-14). The only news items are two Money Today stock-tip style articles on 2026-10-15 and 2026-10-19, which do not give a business reason.
Over the last 20 trading days, foreigners were net sellers of about ₩8.9B, institutions net buyers of about ₩7.0B and retail investors net buyers of about ₩459M. Foreign ownership fell to 6.1% from 9.7% sixty days ago. The short balance is 1.3%.
Every earlier JONBUR Research report and update note on Curiox Biosystems, with Pro.
Unlock with ProModel estimate of fair value
- Bear
- ₩389
- -99%
- Base
- ₩379
- -99%
- Bull
- ₩382
- -99%
Model estimate based on the assumptions shown. Not a price target and not a buy or sell signal.
Base case of the 5-year discounted cash flow model on the stock's Valuation tab (statements TTM to H1 2026; discount rate 7.5%). Bear and Bull move the main assumptions by fixed steps. See and change the assumptions
Filings and data used
- Trading Plan Report for Executives and Major Shareholders' Specific SecuritiesOct 2, 2026
- Amended: Annual report (Dec 2025)Oct 1, 2026
- Amended: Annual report (Dec 2024)Oct 1, 2026
- Amended: Annual report (Dec 2023)Oct 1, 2026
- Half-year report (Jun 2026)Aug 14, 2026
- [Amended] Notice of Stock Purchase Option GrantAug 12, 2026
- Notice on Grant of Stock Purchase OptionsAug 11, 2026
- Insider shareholding reportAug 10, 2026
- 5%+ holding reportAug 10, 2026
- Insider shareholding reportAug 7, 2026
- Preliminary earnings (consolidated)Aug 6, 2026
- Acquisition of Bonds Before Maturity After Issuance of Convertible Bonds (incl. Overseas Convertible Bonds) (1st Series)Jun 29, 2026
- [Yeouido Investment Headquarters Part 1] Curioxbiosystems, Samgi Energy Solutions: Which Stock Will Enter the Hall of Fame?Oct 19, 2026
- [Hit! Big Win Hunch] 'Duchem Bio, HMM, Curioxbiosystems' - good-feeling big-win stocks for tomorrow's market?Oct 15, 2026
- Daily prices up to 2026-10-19
- Financial statements, trailing 12 months as of H1 2026
- Our fair value model, statements as of TTM to H1 2026
Report history
- Oct 27, 2026Update noteBig price moveCuriox Biosystems: Shares Fall 15.3% in Five Days on Heavy Volume, No Filing Explains the Move
- Oct 19, 2026Update noteBig price moveCuriox Biosystems: Shares Rise 27.9% in Five Days on Heavy Volume, No Filing Explains the Move
- Oct 18, 2026InitiationStart of coverage (300 largest)Curiox Biosystems: Sharp Share Price Rally Against Deep Losses and a Model Estimate Far Below the Market Price
Source: KRX statistical information