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%.

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Model 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

Report history

  1. Oct 27, 2026Update noteBig price moveCuriox Biosystems: Shares Fall 15.3% in Five Days on Heavy Volume, No Filing Explains the Move
  2. Oct 19, 2026Update noteBig price moveCuriox Biosystems: Shares Rise 27.9% in Five Days on Heavy Volume, No Filing Explains the Move
  3. 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

Built only from jonbur's own data: prices and investor flows, filed financial statements and filings, and news headlines. Disclosed (filed) data is labelled as such. Written by AI and may contain mistakes.

This is not financial advice. The report does not recommend buying or selling anything.

Source: KRX statistical information