TAIEX Slips Below 46,000 as Tech Sector Faces Valuation Pressure
Taiwan’s benchmark index closed at 45,862.52 on Monday, dragged down by semiconductor and optical component shares following downgrades and AI-related caution.
The Taiwan Stock Exchange Capitalization Weighted Index ended trading 0.7% lower at 45,862.52, marking the first close below the 46,000 threshold this week. The decline was driven by a broad retreat in technology shares, with trading volume dropping to NT$630.9 billion from NT$721.9 billion on Friday. According to GN auto stocks/technology: tech stocks, the sell-off was triggered by cautious commentary from AI executives and ongoing geopolitical tensions in the Middle East.
Semiconductor leaders led the index lower, with TSMC falling 1.24% to NT$2,380 and MediaTek declining 0.55% to NT$4,560. The weakness extended to the optical component supply chain, where Largan Precision and Genius Electronic Optical both hit their daily limit-down. The sharp drop followed rating cuts by Morgan Stanley and UBS, which questioned the sustainability of recent price gains in these sectors.
Optical and power stocks move in opposite directions
While optical makers faced selling pressure, cybersecurity and power infrastructure names rallied. Fortune Information Systems, Azion, and Ecloudvalley Digital Technology all reached their daily limits-up, a move attributed to remarks by Nvidia CEO Jensen Huang highlighting the sector's role in AI development. Simultaneously, SDI and Superior Plating Technology hit limit-up prices as investors priced in demand for upgraded data center power distribution and liquid-cooling components to manage rising server heat loads.
Power semiconductor producers also benefited from this infrastructure narrative, with Eris Technology and Panjit gaining significantly. The upward movement reflects market expectations for further price increases in October, driven by the continuous rise in power consumption from AI server racks. This divergence highlights a market split between components tied to immediate hardware upgrades and those facing valuation scrutiny.
Futures settlement and rate sensitivity shape outlook
Analyst Chiang Kuo-chung warned that trading volatility may persist into Wednesday, coinciding with the monthly settlement of Taiwan index futures. He noted that foreign investors currently hold net short positions, a stance that could amplify price swings in the short term. This positioning suggests that market participants are hedging against potential downside risks rather than chasing aggressive upside momentum.
Chiang emphasized that the market remains highly sensitive to US Federal Reserve interest rate signals, particularly for companies relying on thematic growth rather than confirmed earnings. He advised that investors use any market rebounds to shift exposure from speculative themes toward AI firms with solid order backlogs. This strategy prioritizes fundamental stability over short-term price action in the current macro environment.
