Expense Ratio: Higher expense ratios mean lower returns as more of the fund's assets are used to cover operating costs.

Market Interest Rates: Rising interest rates can decrease the attractiveness of bond funds as yields on new bonds become more appealing.

Credit Quality: The creditworthiness of the bonds held by the fund impacts its price; downgrades lead to price declines.

Maturity Dates: Funds holding longer-term bonds are more sensitive to interest rate changes and can experience greater price volatility.

Fund Size: Larger funds may experience greater difficulty in generating returns as trading activity can significantly impact the market.

Management Expertise: The fund manager's skill in selecting bonds and navigating market conditions affects overall performance and price.

Economic Conditions: Economic factors like inflation and GDP growth influence interest rates and bond yields, affecting the fund's valuation.

Supply and Demand: The balance between investors buying and selling shares of BOEAX influences its price.