Tech Stocks Lead Bounce After $1.3 Trillion Rout on Nasdaq 100

US technology stocks rebounded, lifting key indexes, after the latest flareup of concerns about the scale of the artificial-intelligence-fueled rally wiped nearly $1.3 trillion from the market capitalization of Nasdaq 100 companies over the first two days of the week.

The S&P 500 Index rose 0.4%, steadying from the global tech selloff a day earlier. The Nasdaq 100 climbed 0.5%, while the blue-chip Dow Jones Industrial Average was little changed.

In Asia, stock volatility continued with South Korean equities swinging between gains and losses as investors focused on the outlook for chipmaker earnings. One of that market’s biggest stars, SK Hynix, is looking to raise up to $29.4 billion in a US listing. Results are due later today from Micron Technology Inc., the single biggest contributor to the S&P 500’s 7.8% gain this year.

“You’re going to have these gut check moments,” said Dan Ives, senior equity analyst at Wedbush Securities, in a Bloomberg TV interview on Wednesday morning. “But we continue to view these as opportunities to own the AI winners.”

The ability of two Korean firms to influence US markets is raising concerns about the fragility of a rally that’s been led by chipmakers this year and has fed worries that it has created a stock bubble that’s at risk of bursting.

“It is somewhat alarming to think the US equity market hinges on a market that was up 116% year-to-date and that two companies were responsible for 77% of the market capitalization gain,” said Michael O’Rourke, chief market strategist at JonesTrading Institutional Services LLC.

The next big test for chip stocks arrives after the bell, when Micron reports earnings after the bell. Daily turnover in the stock has topped $70 billion ahead of the report.

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