Underlying Asset Performance: The primary driver is the performance of the assets held within the fund. If the companies or bonds the fund invests in perform well, the fund's price will likely increase.

Market Sentiment: Overall investor sentiment towards the sectors and geographies the fund invests in plays a significant role. Positive market sentiment can drive up demand and price.

Fund Management Strategy: The investment decisions made by the fund manager, including asset allocation and security selection, impact the fund's returns and therefore its price.

Expense Ratio: The fund's expense ratio, which covers management fees and operating costs, directly affects the net return to investors and influences the fund's attractiveness and price.

Interest Rates: Changes in interest rates, especially those impacting bond yields (if the fund invests in bonds), can affect the fund's price, particularly if it holds fixed-income securities.

Currency Fluctuations: If the fund invests in assets denominated in foreign currencies, exchange rate fluctuations can impact the fund's price when converted back to the fund's base currency.

Supply and Demand: The basic economic principle of supply and demand also affects the fund's price. Increased investor demand coupled with limited supply will push the price up.