KOSPI Plunges 1.6% as AI Fears Hit Tech Giants

KOSPI drops 1.6% to 5,575 after AI profitability concerns slash semiconductor stocks.

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Oct 19, 2026

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KOSPI Plunges 1.6% as AI Fears Hit Tech Giants

KOSPI drops 1.6% to 5,575 after AI profitability concerns slash semiconductor stocks.

In brief

KOSPI drops 1.6% to 5,575 after AI profitability concerns slash semiconductor stocks. KOSPI fell 1.6% to 5,575 as AI profitability fears triggered sharp declines in Samsung Electronics and SK Hynix shares. Originally reported by BigGo Finance.

KOSPI Plunges 1.6%

KOSPI Plunges 1.6% Intraday to 5,575 as AI Profitability Fears Hit Samsung Electronics, SK Hynix

KOSPI fell into the high-1% range and slid to the 5,570 level in early trading on the 19th.

AI Profitability Fears

Concerns over U.S. AI infrastructure investment profitability weighed down semiconductor stocks.

Semiconductor Selloff

Philadelphia Semiconductor Index dropped 3.83% and SK Hynix ADR plunged 6.58%.

Stock Market Reaction

Stock Market Reaction

Samsung Electronics fell 0.70% and SK Hynix dropped 2.36% in early trading.

Investor Split

Foreign investors bought net 563.3 billion won while retail investors sold net 845.6 billion won.

Technical Rebound

Analysts say KOSPI may rebound after steep decline but support at 5,300 level is critical.

“This week, south korea's stock market will likely see high volatility as anxiety over the ai industry resurfaces following friday's plunge in u s ai stocks”

AI Revenue Concerns

Anthropic revenue growth slowed sharply while CoreWeave corporate bonds lost value.

What to remember

KOSPI fell 1.6% to 5,575 as AI profitability fears triggered sharp declines in Samsung Electronics and SK Hynix shares.

Read the original on BigGo Finance

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