Underlying Index Performance: The performance of the index that the 00885.TW ETF tracks directly impacts its price. A rise in the index typically leads to an increase in the ETF's price, and vice versa.

Supply and Demand: Market forces of supply and demand influence the ETF's price. Higher demand generally pushes the price up, while increased selling pressure can lower it.

Net Asset Value (NAV): The NAV, representing the total value of the ETF's holdings per share, serves as a fundamental benchmark for its price. Deviations can occur due to market dynamics.

Expense Ratio: The ETF's expense ratio, covering management fees and operational costs, indirectly affects its price over time. Higher expenses can slightly reduce returns.

Investor Sentiment: Overall investor sentiment towards the market or specific sectors can influence demand for the ETF, leading to price fluctuations.

Currency Exchange Rates: Fluctuations in currency exchange rates can impact the price, especially if the ETF invests in assets denominated in foreign currencies.

Economic Conditions: Broad economic factors, such as inflation, interest rates, and economic growth, can affect the underlying assets and, consequently, the ETF's price.

Geopolitical Events: Major geopolitical events, such as trade wars or political instability, can create market volatility and affect investor sentiment, impacting the ETF's price.

Dividend Yield: The dividend yield of the underlying stocks in the ETF contributes to its overall return, which can influence its price over time.

Tracking Error: The degree to which the ETF's performance deviates from the index it tracks (tracking error) can affect its relative attractiveness and price.

Liquidity: The ETF's liquidity, or ease of trading, affects its price. Less liquid ETFs may experience wider bid-ask spreads and potential price discrepancies.