Strota/ Newsroom/ Global Markets/ 2026-10-15

KOSPI tumbled 6.9%

Strota Newsroom · Global Markets · session of 2026-10-15 · market close

KOSPI closed at 5,592.93 on 2026-10-15, tumbled 6.9% on the session and is +32.7% year-to-date. Here is what the market data shows.

South Korea's KOSPI fell 6.92% on October 15 to close at 5592.93, extending a run of heavy losses that has left the benchmark down 17.8% over the past week and 20.49% over the past month.

The index now sits 38.64% below its 52-week high of 9114.55, though it remains 52.93% above its 52-week low of 3657.28. It closed under both its 50-day moving average (the mean of recent closes over that window), at 6691.58, and its 200-day average, at 6402.99, placing it beneath its short- and long-term trend lines. Over three months it is down 25.19%, yet the year-to-date figure is still a gain of 32.72%, a sign of how far the market had climbed before the slide.

Peer markets' latest closes fall on two different dates, so they do not describe one shared session. Of those that had closed on October 15, Japan's Nikkei dropped 3.85% and Australia's ASX 200 slipped 0.48%. The other peers last closed on October 14. That day the S&P 500 lost 1.11%, the Nasdaq 1.88% and the Dow 0.09%, while Europe finished higher: the FTSE 100 gained 0.7%, the CAC 40 0.58%, the Euro Stoxx 50 0.38% and the DAX 0.15%. In Asia on October 14, Taiwan's TAIEX rose 0.59%, while the Hang Seng fell 0.13%, Shanghai 0.89%, the Nifty 50 0.44% and the Sensex 0.34%.

According to a headline from NBC News, the KOSPI sank more than 7% as semiconductor shares were sold on worries about the AI boom. A Business Insider headline said the turmoil in Korea was rippling into US chip stocks, and a Businesskorea headline reported the index slipping below 6,000 at the open amid foreign selling. Those headlines are tagged as roughly a day old, so they may describe an earlier session.

The pack does not line up neatly. NBC's “more than 7%” does not match the 6.92% recorded here, and a TradingKey headline from 18 hours earlier described the KOSPI closing down 0.44% for a sixth straight day of losses, with SK Hynix off over 1%. The pack does not say which session each figure belongs to.

What the data establishes is a steep one-day fall, a sharp weekly loss and a close below both key moving averages, with Japan also lower on the same date. The headlines point to chip-stock selling and foreign outflows, but they are attributed reports rather than confirmed causes, and the data does not establish a single driver for the move.

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.