KOSPI closed back above 7,000 for the first time in five sessions as institutional buying offset heavy retail selling. Refiners led the charge after China reportedly halted refined-product exports and Brent crude topped $100.
Korean stocks staged a sharp intraday reversal on October 1 as Micron’s earnings beat and news that 2026 HBM supply is sold out sent semiconductor names surging. KOSPI closed up 1.95% at 6,971.35; KOSDAQ soared 4.48%.
KOSPI closed down 0.48% at 6,838.04 after surrendering an early 1% gain, as foreign investors sold roughly $1.5 billion ahead of US PCE data and Micron earnings. KOSDAQ rose 0.72% on chip-equipment, battery and biotech strength.
The KOSPI dropped 2.70% to 6,889.74 in its first session after the Chuseok holiday as surging US Treasury yields triggered heavy foreign selling of chipmakers, while the KOSDAQ edged up 0.25% on an FDA-approval rally in HLB group stocks.
Micron’s fiscal quarters end in August, November, February and May, so it reports real DRAM/NAND numbers weeks before Samsung Electronics and SK Hynix. Here is how to read its bit-shipment guidance, HBM commentary, inventory days and capex as direct inputs into the next morning’s Samsung Electronics and SK Hynix open in Seoul.
Korea’s KOSPI jumped 1.65% to retake 7,000 for the first time in seven sessions, powered by record chip exports and heavy institutional buying of Samsung Electronics. But decliners outnumbered gainers, exposing a narrow, top-heavy rally.
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 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.
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.