Underlying Index Performance: The ETF's price closely tracks the underlying index it replicates. If the index rises, the ETF's price tends to increase, and vice versa.

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

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

Expense Ratio: The ETF's expense ratio, which covers operating costs, can indirectly affect its price by slightly reducing returns over time.

Trading Volume and Liquidity: Higher trading volume and liquidity usually lead to tighter bid-ask spreads and more efficient price discovery, impacting transaction costs.

Market Sentiment: Overall market sentiment, whether bullish or bearish, can influence the ETF's price, particularly during periods of heightened volatility.