Tech stock rout, driven by US AI fears, continues in Asian trading

Global markets roiled due to concerns that US midterm election results will lead to slowing data centre expansion and increased regulation of AI. Market authorities in South Korea paused trading on Friday as prices plunged across the region. Global markets have been rattled by a sharp fall in the trading price of tech stocks, which is driven by fears that the Democrats’ victory in the US midterm elections will increase regulatory scrutiny of AI and slow the country’s data centre build-out.

Japan’s Nikkei index slumped 6 percent, its deepest one-day drop since April 2025. Indices in South Korea and Taiwan plunged more than 8 percent after the opening bell, before cutting losses as authorities scrambled to stem the selling. Wall Street’s volatility “fear gauge” soared overnight on Thursday and the tech-focused Nasdaq sank 5.5 percent, wiping $3 trillion off S&P 500 firms, as investors fretted that the Democrats could put the brakes on the AI boom being encouraged by President Donald Trump.

“It was a brutal morning for many investors here in Asia.