Industry data released on Monday showed that the total market capitalization of companies listed on South Korea's stock market has exceeded 6,000 trillion won (approximately $4.08 trillion) for the first time, driven by optimism in the semiconductor sector.

According to data from the Korea Exchange (KRX), the combined market value of firms listed on the country's three major exchanges—the KOSPI, KOSDAQ, and KONEX—reached 6,047.9 trillion won as of early Monday morning.

Since the beginning of April, South Korea's main stock indices have shown sustained strength, largely due to positive expectations surrounding the country's major semiconductor companies. The Korea Composite Stock Price Index (KOSPI) rose more than 28% from April 1 through last Friday, while the KOSDAQ index climbed 14.4% over the same period.

Earlier this month, South Korea's two leading semiconductor firms—Samsung Electronics and SK Hynix—both reported record first-quarter earnings, largely attributed to strong growth in semiconductor demand fueled by the global artificial intelligence boom.