[Disclosure] Hana Micron (067310) Designated as ‘Investment Warning Stock’ Due to Surge; Potential Trading Suspension on Continued Rally

Source of Facts: Financial Supervisory Service DART / 2026-05-21

Disclosure Type: Designation of Investment Warning Stock

💡 3-Second Summary

Hana Micron has been officially designated as an “Investment Warning Stock” after its share price outpaced the market index by more than 200% over the past year. Margin trading is now strictly prohibited for this stock, and a continued rapid surge could lead to a one-day trading suspension.

📊 1. [Key Disclosure Content & Major Figures Summary]

• Target Stock: Hana Micron Common Stock (Ticker: 067310)
• Designation Date: May 22, 2026
• Reason for Designation: Following a prior notice, the stock simultaneously met all the following regulatory criteria on May 21, 2026:
  1. The excess stock price growth rate relative to the benchmark index over the past year is 200% or higher.
  2. The closing price on May 21 represents the highest closing price over the last 15 trading days.
  3. The number of days where the trading involvement of the top 10 accumulation accounts exceeded the standard threshold was 4 days or more within the last 15 trading days.
• Trading Suspension Criteria: If the share price rises by 40% or more within 2 trading days after the designation date (May 22) and remains higher than the closing price of the day before designation (May 21), a temporary trading suspension may be enforced once.
• Earliest Review Date for Lifting: Scheduled for June 08, 2026. If the requirements are not met on this day, the assessment will be postponed by one trading day sequentially.

📈 2. [Expert View: Market & Share Price Impact Analysis]

• Short-Term Liquidity Contraction: Starting May 22, investors purchasing Hana Micron shares must deposit a 100% entrustment guarantee. This means leveraged purchases, such as margin trading and credit extensions, are completely blocked. Because the aggressive speculative capital that typically drives up soaring stocks is restricted, the stock’s short-term buying momentum is highly likely to cool off.
• Heightened Volatility and Suspension Risk: If speculative flows continue to enter the stock despite the warning, leading to a 40% surge within 2 days, the Korea Exchange will halt trading. Market participants naturally tend to avoid the risk of asset lockups associated with trading suspensions. Consequently, until the first evaluation date on June 08, further upside may be technically capped, or sudden profit-taking sell-offs could trigger intense intra-day volatility, calling for severe caution against chasing the rally.

📝 Editor’s Comment (by K-STOCK Editor)

Hana Micron, which has been leaving the broader market in the dust with a spectacular 200%+ rally over the past year, has finally been slapped with a yellow card by the regulators! The market police have stepped in to say, “Cool it down if you want to run longer.” With margin buying completely blocked, the order book won’t look as explosive as before. If the stock pushes forward blindly, it risks hitting a trading halt. Expect a dramatic tug-of-war as major market players try to manipulate the price to dodge a suspension until the June 8 review date. Instead of FOMO buying at the peak, it is a smarter game to watch the charts carefully for tactical entry points.

📢 Disclaimer & Source Information Source: This content has been newly structured and written based on official data submitted to the Financial Supervisory Service’s Electronic Disclosure System (DART).

Investment Risk Notice: This material is provided solely for informational and linguistic reference purposes. Under no circumstances does it constitute financial advice or a recommendation to buy or sell specific stocks. All investment decisions and financial responsibilities rest entirely with the individual investor.

Contact: For compliance inquiries or copyright requests, please contact ksb220805@gmail.com.