Full Breakdown
South Korean KOSPI Plummets as Chipmakers Falter Amid AI Earnings Concerns
7/7/2026, 11:52:58 PM
KOSPI Slides After Chipmaker Sell-off
On July 7 the KOSPI fell 395 points (4.9 %), triggering a temporary halt. The decline followed a 10 % intraday rally in Samsung Electronics and SK Hynix, which then dropped 6.9 % and 6.1 % after posting record AI-related earnings forecasts.
Rally, AI Expectations and Recent Record
The index had risen 82 % YTD, hitting a June 22 high of 9,114.55. Samsung and SK Hynix shares were up over 130 % and 220 % YTD, but analysts warned the rally depended on AI profit growth.
Key Players and Sector Moves
Kioxia fell >10 %; LG Energy Solution slid 6.4 % after forecasting a 77 % profit drop for April-June amid weak EV demand; Hanwha Ocean plunged 22.7 % after losing a submarine contract to a German firm.
Market Data and Trading Activity
Foreign investors sold 2.9 trillion won ($1.9 bn) while retail investors bought 3.2 trillion won. Retail-borrowed positions in KOSPI stocks hit 29.7 trillion won, just above a late-June record of 29 trillion won.
Official Statements & Policy Response
Finance Minister Koo Yun-cheol told parliament that policymakers are examining ways to curb the adverse impact of high volatility from single-stock leveraged ETFs introduced earlier this year and linked to chipmaker stocks. The ministry signaled regulatory tweaks.
Criticism and Investor Sentiment
Analysts warned expectations may be too high for earnings to stay elevated, and that profit-taking and repeated AI-related noise are heightening volatility.
Conflicting Reports & Information Gaps
The reports do not quantify AI-driven chip demand or the precise effect of leveraged-ETF trading on the sell-off; foreign investors’ motives and the regulatory timeline remain unclear.
Verbatim Quotes
- “It (results) is good news but can't be interpreted entirely as good news, as market expectations have grown too high to be raised further, fanning worries that high earnings will not be sustained,” — Seo Sang-young, Analyst, Mirae Asset Securities
- “Although there is no issue when it comes to the chip sector's fundamentals, there remains demand for profit-taking, while noises regarding AI and the chip sector are being raised again ?and again, raising market volatility,” — Han Ji-young, Analyst, Kiwoom Securities
- “It seems retail investors are actively buying the dip and taking long bets in the spot market as well as through exchange-traded funds (ETFs),” — Kim Seok-hwan, Analyst, Mirae Asset Securities
- “South Korean Finance Minister Koo Yun-cheol said at a parliamentary session that policymakers were discussing ways to minimise the adverse impact of high volatility from single-stock leveraged ETFs, introduced earlier this year and linked to chipmaker stocks.” — Koo Yun-cheol, Finance Minister
Outlook: Policy Measures and Market Prospects
Regulators are expected to review leveraged-ETF design and consider tighter margin rules. While tighter oversight may temper short-term swings, the AI earnings narrative could keep the semiconductor sector volatile.
