Chip Stocks Take a Beating as AI Jitters Spread From Seoul to Wall Street

SK Hynix plunged 10% and South Korea's Kospi briefly halted trading — a sign of how tightly Asian chipmakers are now wired into U.S. tech sentiment

By Barnaby "Bottom-Line" Coyne

Trading on South Korea's Kospi index paused for eight minutes Tuesday morning after the index skidded 8%, the BBC reports. Shares of SK Hynix, one of the world's biggest memory-chip makers, fell 10% in Seoul as the semiconductor selloff that started on Wall Street spread across Asia, according to CNBC.

This wasn't an isolated wobble. It followed a weak session on U.S. markets, where investors have grown jittery about whether the artificial-intelligence spending boom is running ahead of the payoff. Chip firms across the U.S. and Asia fell in tandem, the BBC notes — and CNBC reports that the 60-day correlation between the Kospi and the tech-heavy Nasdaq 100 has climbed to roughly 0.50, its highest level since 2021, according to data from Rayliant. In plain terms: when American tech sneezes, Korean chipmakers now catch cold, and fast.

Why it matters beyond the trading floor: SK Hynix and its peers supply the memory chips that power the AI data centers Silicon Valley is racing to build. A selloff here isn't just a stock-price story — it's a stress test of the assumption, priced into markets for two years now, that AI demand will keep growing without limit. If that assumption cracks, it doesn't stay contained in one country's exchange.

We don't have trading data past Tuesday's session in our sourcing, so whether this is a one-day scare or the start of a longer correction is genuinely unclear — and worth saying plainly rather than guessing.

Somebody's paying for this. Let's find out who.

— Compiled from reporting by the BBC and CNBC.

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