Asian Stocks Fall as South Korean Chipmakers Tumble Ahead of TSMC Earnings

Asian stock markets broadly declined on Thursday, with South Korean technology shares leading a sharp selloff across the region. Investor sentiment was dampened by concerns over the sustainability of the AI-driven rally ahead of key earnings from industry bellwether Taiwan Semiconductor Manufacturing Co. (TSMC).

South Korean Chipmakers Lead Regional Losses

South Korea's KOSPI index plunged more than 6%, a drop severe enough to trigger a brief trading halt. The decline was driven by heavyweight semiconductor firms, with SK Hynix and Samsung Electronics both falling between 8% and 11%, according to Investing.com data.

Adding to domestic pressures, the Bank of Korea raised its benchmark interest rate by 25 basis points to 2.75%, citing persistent inflation and rising household debt. The tech-led weakness was echoed in Japan, where the Nikkei 225 slid 2.7%.

Other major indexes also retreated:

• China's Shanghai Composite and CSI 300 indexes each fell approximately 0.5%.
• Australia's S&P/ASX 200 edged down 0.3%.
• Hong Kong's Hang Seng index bucked the regional trend, rising 1.7%.

Geopolitical Jitters and Sector Concerns

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Beyond sector-specific weakness, investor caution was fueled by renewed geopolitical concerns. Reports of heightened U.S.-Iran tensions near the Strait of Hormuz raised fears of potential disruptions to global shipping, contributing to a rise in crude oil prices.

This has stoked worries about persistent energy inflation, which could weigh on corporate earnings and limit the ability of central banks to ease monetary policy. The selloff in the semiconductor sector also reflects broader uncertainty about the durability of high levels of AI-related spending.

All Eyes on TSMC Results

Market participants are now squarely focused on the upcoming quarterly results from TSMC, the world's largest contract chip manufacturer and a critical supplier to tech giants like Nvidia and Apple.

TSMC's performance is widely seen as a key barometer for global technology demand. While analysts cited by Investing.com expect the company to post a fifth consecutive quarter of record profit, investors will be scrutinizing management's full-year revenue and capital spending forecasts for crucial signals about the health of the AI investment cycle.