The Korea Exchange (KRX) announced that it has designated Hyundai Engineering & Construction as an 'Investment Caution Stock (Closing Price Fluctuation Stock)' for one day on June 15, 2026, following a sharp change in its closing price.

This measure was taken in response to a significant increase in the stock price compared to the previous trading day. According to the disclosure, Hyundai Engineering & Construction's closing price reached 157,500 won, surging 21.15% from the previous price of 130,000 won.

Trading volume for the day totaled 1,565,336 shares, with the closing price trading volume ratio reaching 15.92% of the total volume. Notably, institutional investors' account participation rate during the closing price formation process was tallied at 95.09%, indicating a concentration of supply and demand.

Hyundai Engineering & Construction met all three criteria for designation as an Investment Caution Stock by the Korea Exchange: • Closing price rose or fell by 5% or more compared to the previous price • Closing price trading volume of 5% or more relative to the day's total trading volume • Total daily trading volume of 30,000 shares or more

However, it was found that the stock had been designated as an Investment Caution Stock for the same reason zero times within the recent 5 and 15 trading days.

Under its market alert system, the Korea Exchange designates stocks requiring investor caution as 'Investment Caution Stocks,' the first stage of the system. As the risk level increases, stocks are subsequently designated as 'Investment Warning Stocks' and then 'Investment Risk Stocks,' with trading potentially suspended depending on the circumstances at those stages, the exchange explained.