Doosan Enerbility (034020) plunged in the market on the 15th, drawing investors' attention to the trading session on the 16th. During the day's session, the stock price fell as low as the 62,000-won level.

■ KOSPI and KOSDAQ Plunge Together, Circuit Breakers Triggered in Both Markets

The domestic stock market experienced a so-called 'Black Thursday' on this day. Both the KOSPI and KOSDAQ tumbled sharply as selling pressure spread across the entire market, with circuit breakers triggered in both markets, demonstrating extreme volatility. The decline was notable in that the entire domestic stock market, not just individual stocks, was shaken significantly. As investor sentiment contracted sharply, downward pressure was applied to major stocks, and Doosan Enerbility also failed to escape the market shock. With the stock price falling sharply, investors' wariness about the recent stock price trend is also growing.

A circuit breaker is a system that temporarily halts trading in order to curb excessive market volatility when the stock price index falls below a certain level. The fact that it was triggered in both markets on this day shows just how severe the decline shock was.

The KOSPI closed the day at 5,554.22, down 7.56% from the previous day, while the KOSDAQ finished at 760.82, down 7.65%.

■ U.S. September CPI and PPI Releases Highlight Market Uncertainty

Behind this correction lies the release of U.S. inflation indicators. According to the U.S. Bureau of Labor Statistics, the U.S. September Consumer Price Index (CPI), released on the 14th (Korean time), rose 3.7% year-on-year, while the core CPI, excluding food and energy, increased 2.6%.

Subsequently, the U.S. September Producer Price Index (PPI), released on the 15th, rose 6.3% year-on-year, with the core PPI up 5.0%. With uncertainty across financial markets highlighted following the release of the inflation data, the domestic stock market also underwent a sharp correction, and attention is now focused on the future direction of the market. What impact the PPI release will have on the domestic stock market will likely need to be observed in the 16th's trading session.

■ Key Point to Watch: Rebound or Further Correction?

Attention is now shifting to the trading session on the 16th. The key point to watch is whether Doosan Enerbility will attempt a rebound despite the shock of the day's plunge, or whether it will face further downward pressure. However, with overall market volatility greatly expanded, it appears difficult to rashly predict short-term stock price movements.

[※ This article is intended to convey market trends and is not intended to recommend investment in any specific stock.]