Underlying Asset Performance: The primary driver is the performance of the assets held within the fund, typically stocks or bonds.

Market Sentiment: Overall investor confidence and risk appetite impact fund valuation. A positive market lifts prices; a negative one lowers them.

Interest Rates: Changes in interest rates, especially for bond-heavy funds, can significantly alter their value. Rising rates decrease bond values.

Fund Management: The fund manager's skill in asset allocation and security selection directly influences returns and, therefore, price.

Expense Ratio: Higher expense ratios detract from returns, thus affecting the fund's overall attractiveness and potentially its price.

Currency Fluctuations: For funds investing in international assets, currency exchange rates can impact the fund's price in the investor's base currency.

Supply and Demand: Investor demand for the fund itself can affect its price, particularly for ETFs traded on exchanges.

Economic Conditions: Macroeconomic factors like inflation, GDP growth, and unemployment influence the performance of the underlying assets.

Geopolitical Events: Major global events can create market volatility, impacting the fund's investments and its price.

Regulatory Changes: New regulations affecting the financial markets or the fund's investment strategy can also have an impact.