Both the KOSPI and KOSDAQ triggered sell-side circuit breakers at market open, resulting in extreme volatility, with the KOSPI experiencing a maximum decline of -12.65%. This decline exceeded the -12% level seen during the September 11 attacks, the historical maximum for drop size.

Defense, shipping, and refining sectors, which benefited from wartime conditions, also reversed to declining trends. Hanwha Aerospace and LIG Nex1 fell by around 7% and 6%, respectively, amid rising expectations for the deployment of the Cheongung-II missile system.

Foreign investors ended a nine-day net selling streak for the KOSPI and switched to net buying before market close, while maintaining a four-day streak of net purchases for the KOSDAQ.

The exchange rate broke through 1,500 won during late-night trading last Tuesday, closing at 1,476.2 won.

In the context of geopolitical tensions and macroeconomic instability, attention remains focused on whether corporate fundamentals will change.