South Korea's Kospi index closed at a fresh all-time high on Monday, breaking through the 9,100 level for the first time.
The benchmark's ascent was broad-based but anchored by a continued surge in semiconductor shares, which have been the primary engine of the market's recent performance.
The rally coincided with reports of progress in diplomatic negotiations between the United States and Iran.
Market participants interpreted the signs of de-escalation as a positive signal for global risk appetite, further supporting equity gains across Asian markets.
The combination of sector-specific strength in chips and broader geopolitical relief created a tailwind for the index.
Semiconductor stocks remain a critical barometer for South Korea's economic outlook, given the sector's weight in the Kospi.