Underlying Index Performance: 00662.TW tracks a specific index, so its price closely mirrors the index's performance. Upward or downward movements in the index directly influence the ETF's price.

Supply and Demand: Like any traded asset, supply and demand dynamics affect 00662.TW's price. Increased buying pressure drives prices up, while increased selling pressure pushes them down.

Net Asset Value (NAV): The NAV reflects the total value of the ETF's underlying holdings minus liabilities, divided by the number of outstanding shares. The ETF price should generally trade close to its NAV.

Trading Volume and Liquidity: Higher trading volume usually indicates greater liquidity, potentially leading to tighter bid-ask spreads and prices closer to the NAV. Lower volume can widen spreads and create price discrepancies.

Market Sentiment: Overall market sentiment, including investor confidence or fear, can impact the ETF's price. Positive sentiment may increase demand, while negative sentiment can trigger selling pressure.

Economic Factors: Macroeconomic indicators, such as interest rates, inflation, and GDP growth, can indirectly affect the underlying companies in the index, which in turn impacts the ETF's price.

Currency Fluctuations: As the ETF may hold assets denominated in other currencies, exchange rate movements can affect its value when translated back to the local currency.

Dividend Distributions: The ETF's price may adjust around dividend distribution dates, typically decreasing by the dividend amount after the ex-dividend date.

Expense Ratio: Although not a direct driver of daily price fluctuations, the expense ratio represents the ETF's operating costs and can affect its long-term performance relative to the index it tracks.