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.
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.
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.
The KOSPI closed above 7,000 for the first time in about two months, up 1.40%, as OpenAI’s GPT-6 launch lifted chip sentiment and battery materials rallied. Individuals sold a hefty 2.5 trillion won while institutions bought.
Seoul’s KOSPI surged past 7,000 intraday on AI memory-demand hopes tied to OpenAI’s upcoming ‘Astra’ model, then closed down 0.58% at 6,954.52 as retail investors dumped over 3 trillion won of stock. Oil and a US-Canada trade fight added pressure.
Korea’s KOSPI jumped 4.61% to 6,995.39 as OpenAI ‘Astra’ expectations powered Samsung Electronics and SK Hynix. Foreigners and institutions bought heavily while retail investors sold a near-record 8.26 trillion won.
The KOSPI closed at 6,687.21 (+1.64%) and the KOSDAQ surged 2.95% as foreign and institutional investors bought heavily on Fed rate-pause signals, while retail investors sold about $3.3 billion. Semiconductors and crypto-linked names led; banks and biopharma lagged.
The KOSPI sank 3.99% to 6,562.72 as US-Iran clashes near the Strait of Hormuz pushed Brent above $90 and US yields hit multi-month highs. Samsung Electronics and SK hynix fell over 4%, while biotech names surged to Korea’s 30% daily limit.
KOSPI reversed a 1.28% intraday drop to close up 0.23% as Samsung Electronics and SK Hynix extended their buyback-driven rally amid renewed US-Iran tensions. KOSDAQ fell 1.56% with all ten of its largest stocks lower; retail investors bought while foreigners and institutions sold.