Constituent Stock Prices: The primary driver is the underlying stock prices within the ETF. 00881.TW tracks a specific index; price fluctuations in those stocks directly impact the ETF's Net Asset Value (NAV) and market price.

Supply and Demand: Like any security, supply and demand influence 00881.TW's price. High demand pushes the price up, while increased selling pressure lowers it.

Market Sentiment: Overall investor sentiment towards the Taiwanese stock market and the specific sector the ETF represents affects its price. Positive sentiment leads to increased buying, raising prices.

Index Tracking: The ETF aims to mirror its benchmark index. Imperfect tracking can create slight price discrepancies between the ETF and the index, known as tracking error.

Currency Fluctuations: Changes in the exchange rate between the Taiwanese dollar (TWD) and other currencies, if the ETF holds assets priced in those currencies, can impact the ETF's price.

Economic Conditions: Macroeconomic factors like interest rates, inflation, and GDP growth in Taiwan affect the performance of the companies within the ETF and subsequently the ETF's price.

Global Events: International events, such as geopolitical tensions or global economic downturns, can impact investor confidence and lead to price fluctuations in the Taiwanese stock market, affecting 00881.TW.

Management Fees and Expenses: The ETF's expense ratio, which covers management fees and operational costs, indirectly affects its price by reducing its overall return compared to the underlying index.

Dividend Payouts: Dividend payments from the constituent stocks are passed on to ETF holders, impacting its price around the ex-dividend date. The price usually drops by the dividend amount.

Liquidity: The liquidity of the ETF itself and its underlying assets matters. Lower liquidity can lead to wider bid-ask spreads and price volatility.