Underlying Asset Performance: The ETF's price closely tracks the performance of the underlying assets, typically stocks within a specific sector or index. Strong performance in these holdings drives the ETF price up, while weak performance causes it to decline.

Supply and Demand: Market dynamics of supply and demand influence the ETF's price. High demand relative to available shares pushes the price higher, while increased selling pressure lowers it.

Net Asset Value (NAV): The NAV, representing the total value of the ETF's holdings divided by the number of outstanding shares, serves as a benchmark. Market price deviations from NAV can occur, creating arbitrage opportunities that tend to bring the price back in line.

Investor Sentiment: General market sentiment, especially regarding the specific sector or investment theme the ETF represents, impacts its price. Positive sentiment leads to increased buying, raising the price, and vice versa.

Expense Ratio: While not a direct driver of daily price fluctuations, the ETF's expense ratio, the annual fee charged for management, affects its long-term performance and attractiveness to investors.

Macroeconomic Factors: Broad economic indicators, such as interest rates, inflation, and GDP growth, indirectly influence the ETF's price by affecting the performance of the underlying assets and overall market sentiment.

Currency Fluctuations: For ETFs holding assets denominated in foreign currencies, exchange rate movements between those currencies and the domestic currency can affect the ETF's price.

News and Events: Significant news events, such as company earnings reports, regulatory changes, or geopolitical developments, can impact the prices of the underlying assets and, consequently, the ETF's price.