Taiwan Semiconductor Manufacturing (TSMC) Performance: 6671.TW's price is heavily influenced by TSMC's (2330.TW) financial health, outlook, and technological advancements, as it's a major customer.

Global Semiconductor Demand: The overall demand for semiconductors worldwide, particularly in areas like AI, automotive, and consumer electronics, directly impacts the revenue and profitability of TSMC and, therefore, 6671.TW.

Market Sentiment: General investor confidence in the technology sector and the Taiwanese stock market affects trading volumes and valuations of technology-related stocks like 6671.TW.

Economic Conditions: Macroeconomic factors such as global economic growth, inflation, interest rates, and currency exchange rates can indirectly influence demand for semiconductors and investor risk appetite, affecting 6671.TW's price.

Geopolitical Risks: Tensions in the Taiwan Strait and international trade disputes can create uncertainty and negatively impact investor sentiment toward Taiwanese companies, including 6671.TW.