[2026-05-27] KOSPI & KOSDAQ Market Close | Record-High KOSPI on Semiconductor Surge, KOSDAQ Plunges in Decoupling
📊 Today's Market at a Glance On May 27, 2026, Korea's two main bourses moved in starkly opposite directions. The KOSPI closed at a record high on the back of a surge in large-cap semiconductor names, while the KOSDAQ plunged more than 3% as liquidity drained away into the heavyweights. Index Open High Low Close Change Volume KOSPI 8,242.12 8,457.09 8,220.04 8,228.70 +2.25% 61,522.7만 KOSDAQ 1,173.80 1,173.80 1,128.75 1,133.13 -3.36% 121,239.9만 The USD/KRW exchange rate stayed elevated at 1,514.79 , while Bitcoin traded around the $75,825 level. 📈 KOSPI Analysis The KOSPI opened at 8,242.12 and spiked as high as 8,457.09 intraday, breaking above the 8,400 mark, before giving back much of those gains on profit-taking to finish at 8,228.70 ( +2.25% ) — a record closing high. The rally was driven by a surge in large-cap semiconductors such as SK hynix and Samsung Electronics, combined with an opening-day frenzy in newly listed single-stock leveraged ETN/ETF products tracking SK...