Strota/ Newsroom/ Global Markets/ 2026-09-03

KOSPI tumbled 3.0%

Strota Newsroom · Global Markets · session of 2026-09-03 · market close

KOSPI closed at 6,628.15 on 2026-09-03, tumbled 3.0% on the session and is +57.3% year-to-date. Here is what the market data shows.

South Korea's KOSPI fell 3.04% on Wednesday to close at 6628.15, its steepest single-session drop in the latest pullback and leaving it down 1.7% on the week and 24.58% over three months. The index is still up 57.28% for the year to date.

The decline pushed the KOSPI further below its 50-day moving average of 7067.0, though it held above the 200-day line at 6023.54. At the close it traded 27.28% under its 52-week high of 9114.55 and 108.14% above its 52-week low of 3184.42.

The weakness lined up with a broad risk-off session across Asia. Japan's Nikkei 225 dropped 2.98% and Australia's ASX 200 fell 0.92%, while Hong Kong's Hang Seng eased 0.93%. Readings across regions are not strictly same-session: US benchmarks including the S&P 500, Nasdaq and Dow rose 0.46%, 0.45% and 0.56% on September 2, while Europe's FTSE 100, DAX and CAC 40 were little changed to lower on September 1.

A kedglobal.com headline said the Kospi failed to hold above 7,000 as US and Japanese Treasury yields and Iran tensions weighed on sentiment, and a Businesskorea report noted foreigners selling as the index hovered near 6,790. A LinkedIn post described South Korea's market as having entered a bear phase, down nearly 20% from its peak in two weeks.

The data shows no single confirmed domestic driver; the move reflects regional risk aversion and foreign outflows more than a Korea-specific event. What the numbers establish is a sharp, sustained retreat from the highs rather than a one-day aberration.

The numbers

Around the world (same session)

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How this article was made: Strota assembled the market data above (the index's price history, same-session peer-market moves and public headlines) and an AI model wrote the narrative strictly from that evidence — it is not permitted to add outside facts or numbers. Every figure comes from the underlying market/public data.