Asian markets fell on November 3, 2026, as a steep selloff in US technology stocks and semiconductor manufacturers outweighed the benefit of lower oil prices. The KOSPI index saw significant pressure as investors grew cautious about the sustainability of massive AI infrastructure spending and upcoming US political uncertainty.
Asian equity markets opened the week under pressure on Tuesday, November 3, 2026, as a global retreat in technology stocks dampened sentiment. The MSCI Asia Pacific Index declined, mirroring a broader correction in US markets where the Nasdaq 100 had retreated 10% from its recent peak.
Semiconductor companies were the primary drivers of the decline. South Korea’s KOSPI index led the losses in the region, falling between 2.7% and 3.8%. This sharp move was triggered by major domestic chipmakers including Samsung Electronics and SK Hynix, which tracked a three-day, 12% decline in a key US gauge of semiconductor companies. Japan’s market remained closed for the Culture Day national holiday, limiting trading activity in one of the region's largest exchanges.
While cooling energy prices often serve as a tailwind for broader markets, they failed to provide any support this time. Brent crude oil prices hovered around $105 per barrel, following a previous session's drop linked to potential progress in US-Iran diplomatic negotiations. Investors, however, chose to prioritize corporate earnings visibility and sector-specific risks over the benefit of cheaper energy costs.
Rising skepticism regarding the return on investment for large-scale artificial intelligence infrastructure is becoming a major point of concern for shareholders. This fear of overspending, coupled with intense competition in the memory-chip sector from rivals such as CXMT, has led to worries about future profit margins. These concerns are currently forcing investors to reassess valuation multiples for tech firms that have driven market growth throughout the year.
Macroeconomic uncertainty further clouded the sentiment as the region braces for the US midterm elections. The focus has now shifted toward the upcoming US labor market report, which is expected on Friday. Investors are closely tracking these payroll figures, as they will provide a clearer picture of economic health and the stability of corporate output in the face of persistent geopolitical risks. The market is increasingly sensitive to any data that could signal a change in the pace of economic activity, making short-term volatility a key factor to watch in the coming sessions.