South Korean Shares Drop Sharply

The benchmark KOSPI fell 0.86% to close at 7,209 on Wednesday, extending losses from the previous session, amid broad risk-off sentiment and semiconductor concerns. US Treasury yields rose as escalating Middle East tensions pressured global equities, with fears of resurging inflation triggering a bond selloff. This followed US President Trump’s warning that Washington could resume strikes on Iran within days if no agreement is reached. Sentiment also deteriorated after talks between Samsung Electronics and its labor union broke down, paving the way for a strike starting Thursday. Losses were led by Hyundai Motor (-1.66%), LG Energy Solution (-3.75%), and Doosan Enerbility (-4.43%), while Samsung Electronics (0.18%) edged up. Still, sentiment was partly supported after South Korea’s finance minister and central bank governor pledged to cooperate in stabilizing domestic financial markets, while Seoul and Tokyo agreed to strengthen cooperation on supply chains and energy procurement.

The benchmark KOSPI fell 3.25% to close at 7,272 on Tuesday, reversing gains in the previous session, as semiconductor weakness weighed on sentiment. US tech shares declined overnight, tracking a pullback in memory chip stocks as investors locked in gains following a strong chipmaker-driven rally. SK hynix (-4.62%) and SK Square (-7.14%) led losses among technology shares, while Samsung Electronics (-0.80%) also edged lower amid lingering labor dispute concerns. Broader weakness extended across Hyundai Motor (-9.05%), LG Energy Solution (-2.33%), Doosan Enerbility (-5.89%), and Kia Corporation (-4.68%). In contrast, defense-related stocks outperformed, with Hanwha Aerospace surging 4.32% as escalating Middle East tensions boosted optimism over Korean military exports and air defense demand. Investors remained cautious amid elevated crude oil prices and rising global bond yields, even after US President Donald Trump delayed a planned attack on Iran.

The benchmark KOSPI rose 0.31% to close at 7,516 on Monday, recovering part of a sharp selloff in the previous session, as dip-buying emerged in large-cap technology stocks. The index initially opened lower but sentiment improved after Samsung Electronics swung higher on easing concerns over its planned labour strike, following a court decision partially favouring the company and renewed government-mediated wage talks, helping stabilize the index. Gains were led by Samsung Electronics (4.81%), SK Hynix (1.76%), Samsung Electro-Mechanics (2.87%), and Doosan Enerbility (1.53%), while Hyundai Motor (-4.86%), LG Energy Solution (-2.40%), HD Hyundai Heavy Industries (-3.28%), and Kia Corporation (-3.10%) lagged. The choppy session reflected ongoing sensitivity to global growth and interest rate expectations, while foreign selling and sector rotation capped broader upside. Labour-related uncertainty at Samsung remains an overhang for semiconductor sentiment.