Constituent Stock Prices: 00660.TW tracks a specific index. The ETF's price is heavily influenced by the aggregate price movement of the stocks within that index.

Market Sentiment: Overall investor confidence or fear related to the Taiwanese stock market and global economic outlook affects demand and supply for 00660.TW shares.

Supply and Demand: Basic economics. High demand pushes the price up, while increased supply can lower the price.

Currency Exchange Rates: Fluctuations in the NTD/USD exchange rate can impact the value of the underlying assets for foreign investors.

Dividend Payouts: Anticipation and distribution of dividends from the constituent companies can cause price adjustments.

Expense Ratio: The ETF's management fees can indirectly affect its price by slightly reducing returns compared to the underlying index.

Interest Rates: Changes in interest rates can influence investor preferences between bonds and stocks, impacting demand for 00660.TW.

Geopolitical Events: Major political or economic events, especially those affecting Taiwan, can significantly influence investor sentiment and trading activity.