The KOSPI jumped 2.66% to 6,894.23 as SK hynix and Samsung Electronics led a semiconductor rally, one day after heavy hawkish-Fed foreign selling. Five stocks hit Korea’s 30% daily limit while oil refiners fell on easing crude prices.
Korean IPOs allocate at least half the retail tranche by equal allotment — falling back to a random draw only when subscribers outnumber the available shares — let new listings trade anywhere from 60% to 400% of the offer price during the debut session, and release locked-up shares on a published lockup calendar. Here is how each mechanism works and how to read the supply-and-demand signals around it.
The KOSPI closed flat at 6,715.41 after the Fed’s first rate hike since 2023, as foreign investors sold Korean stocks for a seventh straight session — dumping chips but buying shipbuilders. The KOSDAQ rose for a third day and the won slid to around 1,381 per dollar.
The KOSPI snapped a four-session losing streak with a 1.37% jump to 6,717.97, while the won slid roughly 1.6% to around 1,368 per dollar as of the Seoul close — an unusual split, with the Fed’s September decision still hours away.
The KOSPI fell 0.85% as foreign and institutional investors sold over 2 trillion won amid $101 oil, 5% US yields and AI-pacing worries, while the KOSDAQ rose 0.70% on a cybersecurity stock surge. The won weakened to 1,359.68 per dollar ahead of the FOMC.
Rising US 10-year Treasury yields hit Korean stocks through three channels: a higher global discount rate that compresses Samsung and SK Hynix valuations, a wider US-Korea rate gap that lifts USD/KRW, and foreign selling on the KRX. Here is how each channel works, which thresholds matter, and how to read the daily foreign-flow print step by step.
The KOSPI fell 3.26% to 6,684.37 as foreign investors and institutions sold roughly $3 billion of stock ahead of the September 17 FOMC. Chip giants led the losses while cybersecurity and optical-networking small caps surged against the tide.
The KOSPI fell 1.76% to 6,909.91 after an early 3% plunge, as WTI topped $100 on US-Iran escalation and US yields spiked. Foreigners and institutions sold over $3 billion; retail bought the dip. All eyes now turn to tonight’s US CPI.
Korea allows only covered short selling, enforces an uptick rule, and has banned shorting outright after every major crisis since 2008. Here is how the regime works, why retail access is contested, and how to read flow data like the KRW 2.6 trillion foreign outflow of 2026-09-10.
KOSPI slipped 0.25% to 7,033.92 after a 174-point intraday swing on quadruple witching day, as foreigners sold a net $1.9 billion. KOSDAQ rose 0.79% on heavy institutional buying, and Brent’s break above $100 redrew the sector map.