Semiconductor stocks just went through a violent round trip.
The slide started in Asia. According to Yahoo Finance, U.S. chip stocks extended losses in premarket trading on Tuesday, building on Monday's declines, after a broad selloff swept through Asian semiconductor names overnight — with investors pulling back over worries about how AI buildouts are being financed and about competition from China.
South Korea took the hardest hit. The BBC reports the country endured a three-day rout that wiped hundreds of billions of dollars off the value of its stock market.
Then it reversed. AP News reports South Korea's Kospi index jumped more than 16% on a surge of chipmaking stocks; the Free Press Journal puts the Friday move at 17% and calls it the index's strongest single-day gain on record. The individual numbers were startling: SK Hynix rose 28% and Samsung Electronics 24%, according to a report carried on MSN, which attributed the rebound to blockbuster results from two U.S. technology giants that reinforced confidence AI-related spending remains resilient. TradingView reports TSMC stock jumped 7%, crediting Microsoft with reviving the AI-chip trade.
Not everyone read the dip as a warning. The Motley Fool used the selloff to pitch two chip stocks worth buying, urging readers to "focus on the long game." And the underlying business looks intact: Bloomberg reports South Korea's exports are extending their momentum as the chip boom persists.
Why it matters: chipmakers have become the market's proxy for whether the AI spending boom is real, so a swing this wide in a single week shows how much of the world's stock-market value now rides on one industry's earnings — and on investors' confidence that the AI money keeps flowing.