The Seoul stock market faced a dramatic plunge on April 4, driven by escalating tensions in the Middle East, particularly the impacts following the U.S. and Israel's actions against Iran. Investor uncertainty prompted widespread selling across various sectors, with the Kospi and Kosdaq indices experiencing unprecedented drops of 12.06% and 14% respectively. The overall market capitalization for these indices saw a staggering decrease of approximately 662 trillion won in one day, bringing the total loss over two days to around 1,069 trillion won.

Fuelled by fears of prolonged conflict and increased energy prices, particularly crude oil due to the blockade of the Strait of Hormuz by Iran, Asian and European markets, which are more dependent on Middle Eastern energy, have reacted more severely than those in the U.S. This is evident when comparing declines; the S&P 500 fell by only 0.9% over two days, while the Euro Stoxx 50 dropped by 5.9%. In the same period, the Kospi fell by 7.2%, and further dropped by 12.1% the day after, reflecting a broad panic sell-off characterized by investors auctioning off stocks indiscriminately.

Market analysts suggest that the recent high rates of increase in the stock market exacerbated the current downturn, calling for a necessary correction. The Kospi had surged by 24% in January and another 19.5% in February, indicating an overheated market that needed to recalibrate. Interestingly, foreign investors, who had been selling heavily, shifted strategy with net purchases of 235.5 billion won on the recent decline, reflecting a cautious approach amid volatility. Despite the sharp declines, certain sectors which had previously been resilient also succumbed to panic selling, marking a significant shift in sentiment across the board, leading experts to describe the situation as "indiscriminate and violent" in terms of price drops.