Daily Briefing (English)

2026-09-11 · KOSPI & Nasdaq
Headline

KOSPI Closes Below 7,000 as Global Oil Tops $100 and US Treasury Yields Surge

Key Takeaways
  • Both major Korean indices fell 1–2% amid heightened inflation and tightening concerns sparked by global oil breaching $100/bbl and surging US 10-year Treasury yields.
  • Broad-based net selling by foreign and institutional investors deepened declines across large-cap semiconductor and secondary battery stocks.
  • Despite widespread market weakness, select names rallied sharply on stock cancellation announcements such as Sempio, reverse stock splits, and standalone earnings momentum.
Highlights

KOSPI

The KOSPI lost 1.76% to close at 6,909.91, sliding below the 7,000 mark as foreign and institutional investors sold a combined 4.0 trillion KRW (-2.4T KRW and -1.6T KRW, respectively). Large tech names Samsung Electronics (-3.53%) and SK hynix (-2.21%) lagged, while financial holding firms demonstrated relative defensiveness on higher interest rate expectations.

Highlights

KOSDAQ

The KOSDAQ declined 1.95% to 820.64, weighed down by heavy selling in high-valuation growth and tech component names such as EcoPro BM (-7.08%) and Wonik IPS (-7.15%), though short-term capital rotated into select small- and mid-caps with idiosyncratic catalysts.

Highlights

NASDAQ

Overnight, the Nasdaq settled lower as tech shares weakened under renewed inflation fears from surging oil prices and rising US Treasury yields; the current regular session performance is pending pre-market verification as of Korean standard time.

Today's Watchlist
  • Further upside momentum in crude oil prices (WTI and Brent above $100/bbl) and US 10-year Treasury yields (approaching 4.9% levels)
  • Signs of a reversal in foreign and institutional flows, alongside price stabilization in heavyweight tech leaders like Samsung Electronics and SK hynix
  • Upcoming US August PPI release and commentary from Fed officials regarding the policy rate trajectory ahead of the FOMC meeting
Risk Note

This briefing is provided for informational purposes only and does not constitute investment advice. Heightened macroeconomic volatility—driven by potential oil supply disruptions from geopolitical uncertainties and sustained high interest rates—may amplify market swings. Prudent risk management and portfolio diversification are advised.

Last updated: 2026-09-11 16:00:21