Fund Performance: Past performance influences investor demand. Strong returns attract investment, raising the price. Weaker performance can deter investors, lowering the price.

Market Conditions: Broad market trends (bull or bear markets) affect investor sentiment. Positive economic news can boost fund prices, while negative news can depress them.

Underlying Assets: The fund's price directly relates to the value of its holdings (stocks, bonds, etc.). If these assets increase in value, the fund's price increases, and vice versa.

Fund Expenses: Management fees and other expenses reduce the fund's returns. Higher expense ratios can negatively impact the fund's price over time compared to lower-cost alternatives.

Investor Sentiment: Overall investor mood impacts fund flows. Fear and uncertainty can lead to redemptions, pushing prices down. Optimism can trigger inflows, increasing prices.

Interest Rates: Changes in interest rates affect bond valuations (if the fund holds bonds). Rising rates can decrease bond values and the fund's price.

Currency Fluctuations: If the fund invests in foreign assets, currency exchange rates can affect its price. A strengthening pound against the fund's holdings' currency will decrease the value.

Supply and Demand: Basic economics dictate that higher demand and/or less supply will raise the fund price. Conversely, excess supply and less demand will lower it.