Asian stock markets delivered a mixed picture on Tuesday, with South Korea standing out after its benchmark index hit record territory on gains in chip-related names. At the same time, wider market sentiment remained cautious as investors monitored fragile diplomatic developments tied to a U.S.-Iran ceasefire.
KOSPI reaches all-time high
South Korea's KOSPI climbed just over 2% to an all-time peak of 6,361.17 points, propelled by optimism around companies linked to artificial intelligence chip production. One standout was SK Hynix (KS:000660), which rallied to fresh record levels after the company said it plans to begin production of advanced memory modules intended for next-generation AI chips made by NVIDIA Corporation (NASDAQ:NVDA).
Other regional market moves
Japanese technology names also helped underpin gains in Tokyo, where the Nikkei 225 rose 1.3% and the broader TOPIX index inched 0.3% higher. By contrast, mainland Chinese equities saw mild declines: the Shanghai Composite and the Shanghai Shenzhen CSI 300 each eased 0.3%. Hong Kong's Hang Seng index traded largely flat.
Elsewhere in the region, Singapore's Straits Times Index ticked up 0.3%, while Australia's S&P/ASX 200 dipped 0.2%. Futures contracts tied to India's Nifty 50 index moved down about 0.1%.
International context and sentiment
Wall Street futures were slightly higher in Asian trade after U.S. stock benchmarks closed marginally lower overnight. Market participants noted that Wall Street had posted solid gains the prior week, supported by resilient corporate earnings and continued momentum in AI-linked shares.
Geopolitical tensions and energy concerns
Despite pockets of strength, regional rallies were capped by renewed geopolitical uncertainty. Oil prices remained broadly elevated after tensions between Washington and Tehran escalated following the reported seizure of an Iranian vessel and concerns about potential disruptions in the Strait of Hormuz, a key energy transit route.
Diplomatic efforts in Islamabad aimed at de-escalation produced mixed signals. Some reports suggested Iran could participate in talks, while others indicated reluctance, highlighting uncertainty in the run-up to the ceasefire deadline on Tuesday.
The combination of localized equity strength driven by AI-related semiconductor developments and broader caution around geopolitical developments left Asian markets with a mixed overall performance on the day.