Chip Stock Rout Plunges Nasdaq Into Correction as South Korea Halts Trading

The Quick Take

• A global rout in semiconductor stocks plunged the Nasdaq into correction territory, with the index falling nearly 2% as South Korea's bourse halted trading
• South Korea was forced to halt trading as the chip-led sell-off, described as 'nasty', spread from Asia into European and US markets
• The reversal hit what had been one of the year's top-performing exchanges, with semiconductor and AI-related names at the epicenter of the decline

A sharp and broad-based decline in semiconductor stocks triggered a global equity sell-off severe enough to push the Nasdaq Composite into correction territory — defined as a decline of 10% or more from a recent peak. City AM reports the tech-heavy index fell nearly 2% in a single session as the sell-off radiated from Asian markets, where South Korea's bourse was forced to halt trading. The correction represents a significant turn in fortunes for what had been one of the year's best-performing market themes, as the AI-driven semiconductor rally unwound sharply in the face of growing investor concern.

The forced halt in South Korean trading underscores the severity of the sell-off: circuit breakers are typically reserved for extreme market volatility events. South Korea is home to Samsung Electronics and SK Hynix, two of the world's largest memory chip makers and critical suppliers to the AI infrastructure chain. Their declines amplified the sell-off in globally integrated semiconductor supply chains, pulling down equipment makers, substrate suppliers, and advanced packaging companies across Asia and the West. The Nasdaq's entry into correction territory suggests the damage extends well beyond individual names to a systemic repricing of the AI-capex narrative.

The forward signal for the Nasdaq's recovery path is the earnings season from major US tech and semiconductor companies. If big-cap hyperscalers (Microsoft, Meta, Alphabet, Amazon) confirm their AI infrastructure spending plans, the sell-off would likely reverse quickly. However, any guidance cut or capex pull-back would validate the correction and potentially extend it. The macro variable is the Federal Reserve's rate policy: a surprise hawkish signal would compound the pressure on high-multiple tech stocks, while any dovish surprise would provide a relief bounce. Watch the VIX (volatility index) as a sentiment gauge for the correction's severity.

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