South Korea's KOSPI closed at a record 7,822.24 on May 11, adding 324 points (+4.32%) as semiconductor stocks repriced after the Philadelphia Semiconductor Index surged 5.51% on May 8. SK Hynix cleared 190,000 KRW (+11%) and Samsung Electronics crossed 280,000 KRW (+6%), putting the 8,000 level within 2.2% reach.
South Korea's KOSPI touched a record 7,531.88 on Thursday before closing up 1.43% at 7,490.05. The rally pushed Korea's total market cap to $4.59 trillion, surpassing Canada to become the world's seventh-largest equity market, just ten days after overtaking the UK.
Samsung Electronics became the 13th company globally to top $1 trillion in market capitalization, with shares surging 14.41% to ₩264,000. The KOSPI closed at an all-time high of 7,384.56 (+6.45%), with foreign investors recording ₩3.53 trillion in net purchases — one of the largest single-day inflows in Korean market history. AI infrastructure-driven structural demand and Samsung's reported foundry talks with Apple were the twin catalysts.
South Korea's KOSPI benchmark crossed 7,000 for the first time in its history on May 6, 2026, surging 4.54% to 7,252.09 in early trade. The milestone is driven by semiconductor-sector strength — buoyed by AMD's 15% overnight gain — and optimism over U.S.-Iran ceasefire talks that eased oil-supply risk.