Underlying Asset Performance: The primary driver is the performance of the underlying assets the ETF tracks. If these assets increase in value, the ETF price generally rises.

Supply and Demand: Basic economic principles apply. High demand pushes the price up, while increased supply can lower it.

Market Sentiment: Overall market confidence or pessimism influences ETF prices. Positive sentiment can lead to increased investment.

Expense Ratio: While not a direct driver, a higher expense ratio can indirectly affect returns compared to similar ETFs with lower fees.

Index Tracking Accuracy: How closely the ETF mirrors the performance of its benchmark index affects its appeal and price relative to its NAV.

Liquidity: Higher trading volume usually indicates better price discovery and tighter bid-ask spreads, making it more attractive.

Interest Rates: Changes in interest rates, especially if the underlying assets are sensitive to rate fluctuations, can impact the ETF's price.