Interest Rate Movements: Changes in prevailing interest rates directly influence MMBVX's yield and price. Higher rates make existing fund holdings less attractive, potentially lowering the price.

Credit Quality of Holdings: The creditworthiness of debt securities within MMBVX affects its perceived risk and therefore, its price. Downgrades can negatively impact the price.

Fund Management Performance: How well the fund managers select and manage the portfolio's assets influences investor confidence and demand, impacting the price.

Market Sentiment: Overall market conditions and investor attitudes towards risk can affect demand for money market funds like MMBVX, influencing its price.

Economic Conditions: Economic indicators such as inflation and GDP growth influence interest rate expectations and overall market stability, which indirectly affect MMBVX's price.

Liquidity: The ease with which MMBVX's underlying assets can be bought or sold affects the fund's overall stability and perceived risk, influencing its price.