Korea’s KOSPI fell 3.65% and the KOSDAQ 4.83% on the first session after the Hangul Day holiday, as pent-up US semiconductor valuation fears landed at once. Foreigners sold about $1.5 billion; retail bought the dip.
Samsung’s jamjeong silsaek flash discloses just two numbers — consolidated revenue and operating profit — before the open, weeks ahead of the full filing. How the market trades the surprise versus consensus, the same-morning read-through to SK Hynix and the KOSPI, and why a record beat can still sell off.
Samsung Electronics delivered Korea’s first 100-trillion-won quarterly operating profit, yet the KOSPI sank 2.62% to 6,625.93 as foreign and institutional investors sold roughly $3.3 billion into an options-expiry session. Batteries rallied; biotech slumped.
Seoul stocks fell hard on October 7 as foreign investors sold roughly $2.3 billion of KOSPI shares ahead of Samsung Electronics’ Q3 preliminary results. Games and entertainment names bucked the slide.
KOSPI gave back the 7,000 level as foreign investors sold roughly 1.75 trillion won of shares amid 24-year-high US bond yields, while KOSDAQ jumped 2.98% on biotech and chip-equipment strength. Samsung’s Q3 preliminary results land October 8.
Korean listed companies file quarterly and semiannual reports within roughly 45 days of period-end and audited annual reports within about 90 days — but the voluntary, unaudited jamjeong preliminary release lands weeks earlier and is what actually moves the stock. Here is how to tell the four DART filing types apart.
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.
Parent shareholders get no shares in a muljeok bunhal (physical spin-off), so when the unit later IPOs the parent reprices as a holding company — historically at steep discounts to net asset value. How to read Korea’s two split structures, the double-counting problem, and the appraisal rights introduced in late 2022.
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.