KOSPI fell 1.2%
South Korea's KOSPI closed the session down 1.23% at 5593.56, another decline in what has become a punishing stretch for the country's benchmark index. The fall was modest measured against the single day, but it landed on top of a drop of 21.18% over the past week and 34.01% over the past month, so the index finished the day deep in a downtrend rather than merely soft.
The longer arc is stranger than the recent numbers suggest. Even after the collapse of the last month, the KOSPI was still up 32.73% for the calendar year to date, and it sat 79.31% above its 52-week low of 3119.41. At the same time it was 38.63% below its 52-week high of 9114.55, meaning the index had given back a large share of an unusually strong run without yet erasing it. Over three months the index was down 15.44%, so the damage was concentrated in the most recent weeks.
Both of the moving averages that traders commonly use as trend markers were above the closing level. The 50-day average, a rough gauge of the past two and a half months of prices, stood at 7766.86, far overhead. The 200-day average, which smooths roughly a year of trading, stood at 5718.52 — close, but still above the close, so the index ended the day beneath both.
Peer markets did not move as one. Wall Street fell alongside Seoul, with the Dow down 2.19%, the Nasdaq down 1.74% and the S&P 500 down 1.52%, all steeper declines than the KOSPI's. Elsewhere in Asia the picture was mixed: the Nikkei rose 0.71% and the Hang Seng added 0.20%, while Shanghai slipped 0.62% and the TAIEX 0.26%. European indices were mostly firmer, with the CAC 40 up 0.71% and the Euro Stoxx 50 up 0.46%, and India's Sensex closed 0.35% higher. That split argues against a single global shock and points to something more specific to Korea and to US technology.
Coverage published during the day pointed in that direction without confirming it. According to a report from Al Jazeera, the market's plunge came as an artificial-intelligence-driven boom faded, and a report from Business Insider said the rout had taken the shine off the trillion-dollar run at Samsung and SK Hynix. The Diplomat carried a piece arguing that the correction exposed the economy's dependence on semiconductors, and Moneycontrol reported accounts from retail investors describing heavy personal losses. Barron's, roughly a day earlier, reported that J.P. Morgan had characterised the selloff as close to finished.
None of that is a confirmed cause. The evidence establishes the size and shape of the move and the fact that reporting clustered around semiconductors and AI sentiment; it does not establish what any of those stories will mean from here.
The numbers
- Level 5,593.56, -1.23% on the day (as of 2026-07-30)
- 1-week -21.18% · 1-month -34.01% · 3-month -15.44% · YTD +32.73%
- 52-week range 3,119.41 – 9,114.55, 38.6% below the high
- Trading below its 50-day average and below its 200-day average
Around the world (same session)
- S&P 500 -1.52%
- Nasdaq -1.74%
- Dow -2.19%
- FTSE 100 +0.18%
- DAX -0.14%
- CAC 40 +0.71%
- Euro Stoxx 50 +0.46%
- Nikkei +0.71%
- Hang Seng +0.20%
- Shanghai -0.62%
- TAIEX -0.26%
- ASX 200 -0.78%
- Sensex +0.35%
- Nifty 50 +0.28%
Recent headlines
- A Stock Market Correction Reveals South Korea’s Economic Dependency on Semiconductors — The Diplomat – Asia-Pacific (3h ago)
- U.S. and Korean tech stocks are now tightly linked — and that could be a worry for investors — CNBC (2d ago)
- South Korea's stock rout took the shine off Samsung and SK Hynix's trillion-dollar run — Business Insider (5h ago)
- The Kospi’s Brutal Selloff Is Nearly Over, Says J.P. Morgan — Barron's (22h ago)
- 'Lost my apartment fund, feel like dying': South Korean retail investors recount massive losses in KOSPI... — Moneycontrol.com (2h ago)
- World's Best Index Falls Into Bear Market In Another Bad Sign For AI Stocks — Investor's Business Daily (2d ago)
- South Korea’s stock market plunges as AI-driven boom fades — Al Jazeera (16h ago)
- EU stock markets on the rise, with the focus on quarterly results. Milan remains cautious as Stellantis falls — Il Sole 24 ORE (4h ago)
Sources
- A Stock Market Correction Reveals South Korea’s Economic Dependency on Semiconductors — The Diplomat – Asia-Pacific
- U.S. and Korean tech stocks are now tightly linked — and that could be a worry for investors — CNBC
- South Korea's stock rout took the shine off Samsung and SK Hynix's trillion-dollar run — Business Insider
- The Kospi’s Brutal Selloff Is Nearly Over, Says J.P. Morgan — Barron's
- 'Lost my apartment fund, feel like dying': South Korean retail investors recount massive losses in KOSPI... — Moneycontrol.com
- World's Best Index Falls Into Bear Market In Another Bad Sign For AI Stocks — Investor's Business Daily
- South Korea’s stock market plunges as AI-driven boom fades — Al Jazeera
- EU stock markets on the rise, with the focus on quarterly results. Milan remains cautious as Stellantis falls — Il Sole 24 ORE
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